Islip, NY

10:05 AM EDT on May 21, 2013 (GMT -0400)
Elev: 23 ft
Lon: 73.2° W
Lat: 40.7° N
Source
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News
Medical Examiner: 24 Dead in Oklahoma Tornado
May 21, 2013
The search and rescue efforts are ongoing in Moore, Okla. after a massive tornado levelled the town and local schools.
In Tornado's Wake, Worried Parents Seek Out Kids
May 21, 2013
A desperate search was underway by parents looking to find children after the massive tornado.
Moore Already at Work on Recovery, Says Mayor
May 21, 2013
Glenn Lewis was the mayor of Moore, Okla., when the strongest tornado on record whipped the city in 1999, and he says the most recent storm won't deter the community from rebuilding.
Moore Survivor Finds Dog Buried Alive
May 21, 2013
Tornado survivor is interrupted in the middle of interview by little dog digging out of rubble
A Timeline of Deadly Events in Moore, Okla.
May 21, 2013
Check out this comprehensive timeline of the events that transpired in Moore, Okla.
Oklahoma Tornado: How to Help
May 21, 2013
There are several agencies asking for donations to help those hit hard by the Oklahoma tornadoes.
Multiple Children Dead at Okla. School
May 21, 2013
More than a dozen children are dead in the devastating Moore, Okla. tornado.
Twitter Responds With Prayers for Oklahoma Tornado Victims
May 21, 2013
Twitter responds to the devastation brought by tornadoes Monday in suburban Oklahoma City, offering condolences and prayers for the victims and survivors.
In Their Words: The Oklahoma Tornado Tragedy
May 21, 2013
Our reporters were among the first national media to report from Moore, Okla. shortly after a powerful tornado decimated the town. These are their thoughts as they report from the scene.
'I Expected Chaos:' Scenes from Okla. School
May 21, 2013
A photographer who was among the first to arrive at an Oklahoma Elementary School after a tornado destroyed it, describes the heart-wrenching scene.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
Obama Declares Major Disaster in Oklahoma
May 21, 2013
President Barack Obama has declared a major disaster in Oklahoma as the state recovers from a massive tornado that ripped through the Oklahoma City suburbs Monday, killing dozens and flattening entire neighborhoods.
Photos, Social Media Capture Terror of Okla. Tornadoes
May 20, 2013
Catastrophic tornadoes developed in Oklahoma on Monday. Here are photos and social media reports.
Huge Rock Crashes Into Moon, Sparks Giant Explosion
May 20, 2013
The moon has a new hole on its surface thanks to a boulder that slammed into it in March, creating the biggest explosion scientists have seen on the moon since they started monitoring it.
Deadly Rainstorms Kill 55 in Southern China
May 20, 2013
Chinese authorities say rainstorms that battered southern China this week have killed 55 people and left 14 others missing.
Photos: Deadly Tornado Outbreak Strikes Plains
May 20, 2013
A tornado outbreak struck the Plains states on May 19, 2013, leaving widespread damage in its wake.
Recap: Tornadoes Rake Oklahoma, Kansas, Iowa
May 20, 2013
The weather imagery, video and recap from tornadoes in the Plains on May 19, 2013.
Amazing Nature, Captured
May 20, 2013
These stunning images of nature captured across the globe will change the way you view our world.
Photos: Tornado Devastation in Plains
May 20, 2013
Photos and social media reports of severe weather damage over the weekend in Oklahoma, Iowa and Kansas.
Tornado Hits South of Oklahoma City
May 20, 2013
Continuing coverage of destructive severe weather.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground Forecast for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather is expected to fire up again across the nation's mid-section again on Tuesday.

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
Weather Underground Forecast for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather is expected to fire up again across the nation's mid-section again on Tuesday.

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
More News Articles

Islip Weather at a Glance

Updated 10:05 AM EDT
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Islip, Islip
Elevation
26 ft
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Now
Haze
Haze
Temperature
68.4 °F
Feels Like 68.4 °F
Wind(mph)
2.0
Sunrise / Set
5:30 AM
8:09 PM
Moon
Waxing Gibbous
Today
Thunderstorm 73 °F
Thunderstorm
20% chance of precipitation
Tonight
Chance of a Thunderstorm 63 °F
Chance of T-storms
30% chance of precipitation
Tomorrow
Chance of a Thunderstorm 77 | 63 °F
Chance of T-storms
30% chance of precipitation
Thursday
Chance of a Thunderstorm 72 | 59 °F
Chance of T-storms
60% chance of precipitation
Friday
Chance of a Thunderstorm 68 | 50 °F
Chance of T-storms
60% chance of precipitation
Saturday
Chance of Rain 66 | 48 °F
Chance of Rain
50% chance of precipitation
Today is forecast to be nearly the same temperature as yesterday.
Conditions
Pressure
29.94 in
Visibility
5.0 miles
Clouds
Clear -
Moisture
Humidity
91%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KISP 211356Z 18008KT 5SM HZ CLR 24/19 A2994 RMK AO2 SLP137 T02440194
Don't speak METAR? Read our FAQ.
Weather Radio
Weather Radio Index
Temperature
Temperature
68.4 °F
61,61,61,61,61,61,61,63,64,66,66,70,73
Dew Point
66 °F
Wind
Speed / Dir
2.0 mph from SSW
Wind Gust
0.0 mph
Health
UV
7 out of 16
Pollen
8.60 out of 12
Pollen Forecast
Ozone
Good
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. Fog early. High of 73F. Winds from the SW at 5 to 15 mph. Chance of rain 20%.
Tuesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain, then a chance of rain after midnight. Fog overnight. Low of 63F. Winds from the SSW at 5 to 15 mph. Chance of rain 30%.
Wednesday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. Fog early. High of 77F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. Low of 63F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.
Thursday
chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. High of 72F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of rain 60%.
Thursday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and rain, then a chance of rain after midnight. Low of 59F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.
Friday
chancetstorms Overcast with a chance of a thunderstorm and rain. High of 68F. Winds from the SSW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.
Friday Night
nt_chancerain Overcast with a chance of rain in the evening, then partly cloudy with a chance of rain. Fog overnight. Low of 50F. Breezy. Winds from the East at 10 to 20 mph shifting to the North after midnight. Chance of rain 40%.
Saturday
chancerain Clear with a chance of rain in the morning, then partly cloudy with a chance of rain. High of 66F. Breezy. Winds from the North at 20 to 25 mph. Chance of rain 50%.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 48F. Breezy. Winds from the NNW at 10 to 20 mph.
Sunday
partlycloudy Partly cloudy. High of 68F. Breezy. Winds from the NW at 10 to 20 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the NW at 10 to 15 mph.
Monday
clear Clear. High of 68F. Winds from the West at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 50F. Winds from the SW at 5 to 15 mph shifting to the WNW after midnight.
Tuesday
clear Clear. High of 70F. Winds from the West at 5 to 15 mph shifting to the SSW in the afternoon.
Tuesday Night
nt_clear Clear. Fog overnight. Low of 54F. Winds from the South at 5 to 15 mph.
Wednesday
partlycloudy Partly cloudy. High of 72F. Winds from the South at 5 to 10 mph.
Wednesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 55F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Thursday
partlycloudy Partly cloudy. High of 73F. Winds from the SSW at 5 to 10 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 57F. Winds from the SSW at 5 to 10 mph.
Friday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 75F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Friday Night
nt_partlycloudy Clear with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds less than 5 mph. Chance of rain 20%.
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Nowcast as of 9:41 am EDT on May 21, 2013
.dense fog along the immediate South Shore... As of 930 am...dense fog persists from the rockaways...across Long Beach...Jones Beach...Fire Island and the Great South Bay. This includes ocean Parkway. The fog is severely reducing visibility as warm air moves over the cold water. The fog will likely persist into the afternoon.

Weather Forecast for Islip NY

View Calendar 10-Day Forecast for station KNYISLIP3

Tuesday, 21
Thunderstorm
73 | 63 °F
Thunderstorm
Chance of
Precipitation
20%
Wednesday, 22
Chance of a Thunderstorm
77 | 63 °F
Chance of T-storms
Chance of
Precipitation
30%
Thursday, 23
Chance of a Thunderstorm
72 | 59 °F
Chance of T-storms
Chance of
Precipitation
60%
Friday, 24
Chance of a Thunderstorm
68 | 50 °F
Chance of T-storms
Chance of
Precipitation
60%
Saturday, 25
Chance of Rain
66 | 48 °F
Chance of Rain
Chance of
Precipitation
50%
Sunday, 26
Partly Cloudy
68 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 27
Clear
68 | 50 °F
Clear
Chance of
Precipitation
0%
Tuesday, 28
Clear
70 | 54 °F
Clear
Chance of
Precipitation
0%
Wednesday, 29
Partly Cloudy
72 | 55 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 30
Fog
73 | 57 °F
Fog
Chance of
Precipitation
0%
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. Fog early. High of 73F. Winds from the SW at 5 to 15 mph. Chance of rain 20%.
Tuesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain, then a chance of rain after midnight. Fog overnight. Low of 63F. Winds from the SSW at 5 to 15 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 63 | 63 67 | 66 71 | 63 65 | 62
Wind 4 mph SW 11 mph SW 13 mph SSW 8 mph SSW
Humidity 97% 94% 75% 86%
Chance of Precip. 0% 10% 20% 30%
Cloud Cover 70% 67% 62% 67%
Conditions Fog Fog Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:30 AM
8:09 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.77], Average RMSE [1.43]
The National Weather Service forecast quality is good. MaxT RMSE [1.78], Average RMSE [1.21] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. Fog early. High of 77F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. Low of 63F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 64 | 62 67 | 65 68 | 64 65 | 63
Wind 7 mph SSW 12 mph SW 12 mph SSW 11 mph SSW
Humidity 91% 94% 87% 93%
Chance of Precip. 30% 30% 30% 40%
Cloud Cover 74% 71% 76% 86%
Conditions Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:29 AM
8:09 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.67], Average RMSE [1.04]
The National Weather Service forecast quality is excellent. MaxT RMSE [1.35], Average RMSE [1.60] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. High of 72F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of rain 60%.
Thursday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and rain, then a chance of rain after midnight. Low of 59F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 65 | 63 65 | 63 65 | 63 63 | 59
Wind 13 mph SSW 15 mph SSW 15 mph South 18 mph SSW
Humidity 88% 89% 91% 89%
Chance of Precip. 40% 50% 60% 30%
Cloud Cover 92% 89% 84% 100%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:28 AM
8:10 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.13], Average RMSE [1.19]
The National Weather Service forecast quality is good. MaxT RMSE [1.94], Average RMSE [2.61] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Friday
chancetstorms Overcast with a chance of a thunderstorm and rain. High of 68F. Winds from the SSW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.
Friday Night
nt_chancerain Overcast with a chance of rain in the evening, then partly cloudy with a chance of rain. Fog overnight. Low of 50F. Breezy. Winds from the East at 10 to 20 mph shifting to the North after midnight. Chance of rain 40%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 62 | 59 65 | 59 62 | 59 55 | 55
Wind 13 mph SSW 11 mph South 7 mph SSW 15 mph North
Humidity 91% 82% 89% 98%
Chance of Precip. 40% 20% 30% 20%
Cloud Cover 100% 100% 92% 96%
Conditions Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm Chance of Rain
Sunrise & Sunset
5:28 AM
8:11 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.39], Average RMSE [1.39]
The National Weather Service forecast quality is good. MaxT RMSE [2.15], Average RMSE [2.31] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Saturday
chancerain Clear with a chance of rain in the morning, then partly cloudy with a chance of rain. High of 66F. Breezy. Winds from the North at 20 to 25 mph. Chance of rain 50%.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 48F. Breezy. Winds from the NNW at 10 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 51 60 | 48 62 | 50 54 | 45
Wind 21 mph North 21 mph North 9 mph NNE 15 mph NW
Humidity 91% 65% 65% 71%
Chance of Precip. 20% 20% 30% 10%
Cloud Cover 0% 0% 29% 97%
Conditions Chance of Rain Chance of Rain Chance of Rain Overcast
Sunrise & Sunset
5:27 AM
8:12 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.13], Average RMSE [1.56]
The National Weather Service forecast quality is fair. MaxT RMSE [2.68], Average RMSE [2.23] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 68F. Breezy. Winds from the NW at 10 to 20 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds from the NW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 41 63 | 42 63 | 44 55 | 42
Wind 17 mph NW 14 mph NW 12 mph WNW 13 mph NW
Humidity 66% 45% 50% 60%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 71% 0%
Conditions Clear Clear Mostly Cloudy Clear
Sunrise & Sunset
5:26 AM
8:13 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.46], Average RMSE [1.94]
The National Weather Service forecast quality is good. MaxT RMSE [2.28], Average RMSE [2.43] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Monday
clear Clear. High of 68F. Winds from the West at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 50F. Winds from the SW at 5 to 15 mph shifting to the WNW after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 39 64 | 44 63 | 47 56 | 49
Wind 9 mph NNW 8 mph West 12 mph SW 10 mph WSW
Humidity 60% 45% 58% 81%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:26 AM
8:14 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.12], Average RMSE [2.03]
The National Weather Service forecast quality is good. MaxT RMSE [2.19], Average RMSE [2.09] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
clear Clear. High of 70F. Winds from the West at 5 to 15 mph shifting to the SSW in the afternoon.
Tuesday Night
nt_clear Clear. Fog overnight. Low of 54F. Winds from the South at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 45 65 | 49 64 | 53 58 | 55
Wind 7 mph NW 5 mph WSW 13 mph SSW 4 mph SSE
Humidity 70% 54% 68% 88%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 5%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:25 AM
8:15 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.07], Average RMSE [2.64]
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy. High of 72F. Winds from the South at 5 to 10 mph.
Wednesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 55F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 55 67 | 58 64 | 60 62 | 60
Wind 3 mph SSE 6 mph South 8 mph South 5 mph SSW
Humidity 95% 74% 87% 98%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 16% 31% 49% 63%
Conditions Fog Partly Cloudy Partly Cloudy Fog
Sunrise & Sunset
5:25 AM
8:15 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.52], Average RMSE [2.45]
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 73F. Winds from the SSW at 5 to 10 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 57F. Winds from the SSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 59 | 59 69 | 64 68 | 64 62 | 62
Wind 4 mph SW 6 mph SSW 8 mph South 6 mph SSW
Humidity 99% 84% 89% 100%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 72% 73% 64% 52%
Conditions Fog Mostly Cloudy Mostly Cloudy Fog
Sunrise & Sunset
5:24 AM
8:16 PM
Source: BestForecast at 9:40 AM EDT on May 21, 2013
Descriptive Forecast
Friday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 75F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Friday Night
nt_partlycloudy Clear with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 62 | 62 71 | 63 70 | 64 63 | 63
Wind 4 mph SSW 7 mph SSW 7 mph South 3 mph South
Humidity 96% 76% 85% 100%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 38% 36% 47% %
Conditions Fog Partly Cloudy Partly Cloudy Fog
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
Active Notice: Public Information Statement  (US Severe Weather)
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal (KISP) 69 °F 51 °F
Record (KISP) 90 °F (1996) 39 °F (2002)
Yesterday 75 °F 57 °F
Yesterday's Cooling Degree Days: 1
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
OZONE
Current Good
OZONE
Tuesday Moderate
OZONE
Tuesday Moderate
PM2.5
Coastal Water Temperatures
Place Temperature
No Stations Reporting
Marine Forecast
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:30 AM EDT 8:09 PM EDT
Civil Twilight 4:58 AM EDT 8:40 PM EDT
Nautical Twilight 4:19 AM EDT 9:20 PM EDT
Astronomical Twilight 3:34 AM EDT 10:05 PM EDT
Moon 4:18 PM EDT 2:58 AM EDT
Length Of Visible Light 15h 42m
Length of Day
14h 38m
Tomorrow will be 1m 38s longer.
Waxing Gibbous, 83% of the Moon is Illuminated
Today
Waxing Gibbous
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
81 °F
Dunkirk
79 °F
Penn Yan
79 °F
Elmira
77 °F
Buffalo
77 °F
Rochester
53 °F
Saranac Lake
55 °F
Plattsburgh
57 °F
Elmira
57 °F
Montauk
57 °F
Massena
Record Extremes
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Aviation
City Temp. Conditions Updated
Islip 76 °F Haze 9:56 AM EDT
Farmingdale 74 °F Clear 9:53 AM EDT
Shirley 76 °F Clear 9:56 AM EDT
Bridgeport 71 °F Haze 9:52 AM EDT
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Flight To ETA Status
SWA193
Fort Lauderdale, FL 		KISP 09:59AM On Time
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Type Condition
Flight Rule: MVFR (KISP)
Wind Speed: 8.0 kts.
Wind Dir: 206° (SSW)
Ceiling: Unlimited

METAR KISP 211356Z 18008KT 5SM HZ CLR 24/19 A2994 RMK AO2 SLP137 T02440194

View all Reports & Maps
Nearby Events
Event Date Forecast
No events within 10 mi of location. View all events.
Event data courtesy eviesays.com
Sports
Event Date Forecast
Tigers vs. Indians 7:05 PM EDT on May 21, 2013 Chance of a Thunderstorm, 77 °F
Yankees vs. Orioles 7:05 PM EDT on May 21, 2013 Thunderstorm, 81 °F
Event Date Forecast
Livorno vs. Brescia 6:30 PM CEST on May 22, 2013 Clear, High 71° F/ 22° C
Empoli vs. Novara 8:45 PM CEST on May 22, 2013 Clear, High 69° F/ 21° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 26, 2013 Partly Cloudy, 70 °F
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 02, 2013 Average High 81° F/ 27° C
Event Date Forecast
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 23, 2013 Partly Cloudy, 68 °F
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 24, 2013 Partly Cloudy, 70 °F
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Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Islip, Islip, NY 68.4 °F - 66 °F 91% SSW  at  2.0 mph 0.00 in / hr 26 ft 10:05 AM EDT Rapid Fire  
Percy Williams EI, East Islip, NY 69.6 °F - 54 °F 58% SW  at  2.3 mph 0.00 in / hr 5 ft 10:05 AM EDT Rapid Fire  
Bay Shore, Bay Shore, NY 76.5 °F 78 °F 69 °F 77% West  at  2.7 mph 0.00 in / hr 49 ft 10:05 AM EDT Rapid Fire  
Oak Neck, West Islip, NY 70.4 °F 72 °F 62 °F 76% North  at  0.0 mph 0.00 in / hr 3 ft 9:59 AM EDT Normal
Long Island South Shore, Oakdale, NY 72.1 °F 72 °F 66 °F 81% North  at  0.0 mph 0.00 in / hr 30 ft 10:00 AM EDT Normal  
Hauppauge LIE Exit 55, Hauppauge, NY 76.8 °F 78 °F 69 °F 77% SSW  at  3.0 mph 0.00 in / hr 140 ft 10:04 AM EDT Normal  
Deer Park Ave Southern State Pkwy, North Babylon, NY 69.6 °F - 70 °F 100% SE  at  0.0 mph 0.00 in / hr 34 ft 10:05 AM EDT Normal  
Sayville, NY 70.9 °F - 67 °F 88% SSW  at  2.0 mph 0.00 in / hr 36 ft 10:05 AM EDT Rapid Fire  
Belmont Lake State Park Area, North Babylon, NY 73.2 °F 72 °F 69 °F 86% ESE  at  0.0 mph 0.00 in / hr 45 ft 10:05 AM EDT Rapid Fire
Lake Hills Ronkonkoma, Ronkonkoma, NY 81.1 °F 91 °F 80 °F 98% West  at  2.7 mph - / hr 59 ft 10:02 AM EDT Normal  
VLMS Weather, Hauppauge, NY 71.2 °F - 68 °F 89% NW  at  0.0 mph 0.00 in / hr 128 ft 10:05 AM EDT Rapid Fire  
Port Ave, Ronkonkoma, NY 79.0 °F 83 °F 74 °F 85% West  at  3.0 mph 0.00 in / hr 111 ft 10:05 AM EDT Rapid Fire
Babylon Village, Babylon, NY 68.7 °F - 61 °F 80% West  at  0.0 mph 0.00 in / hr 55 ft 10:04 AM EDT Rapid Fire  
Fire Island Pines, Fire Island Pines, NY 61.8 °F - 58 °F 86% SW  at  2.0 mph 0.00 in / hr 20 ft 10:03 AM EDT Normal
Elwood Highway, Huntington, NY 77.5 °F 79 °F 71 °F 81% SSW  at  11.0 mph 0.00 in / hr 210 ft 10:05 AM EDT Rapid Fire  
American Venice, Lindenhurst, NY 67.3 °F - 64 °F 89% WSW  at  5.0 mph 0.00 in / hr 33 ft 9:53 AM EDT Normal  
KNYSAINT3, Saint James, NY 77.0 °F 79 °F 68 °F 75% West  at  1.6 mph 0.00 in / hr 144 ft 10:05 AM EDT Rapid Fire  
Club 320, Saint James, NY 78.7 °F 81 °F 71 °F 77% NW  at  3.5 mph 0.00 in / hr 171 ft 10:05 AM EDT Rapid Fire  
Lone Pine Poultry Farm, Melville, NY 75.7 °F 76 °F 71 °F 86% North  at  0.0 mph 0.00 in / hr 135 ft 10:05 AM EDT Normal  
Lake Grove, NY, Lake Grove, NY 80.1 °F 83 °F 67 °F 65% WSW  at  2.8 mph 0.00 in / hr 0 ft 10:05 AM EDT Rapid Fire  
Kings Park, Kings Park, NY 84.6 °F 91 °F 73 °F 68% NW  at  2.5 mph 0.00 in / hr 177 ft 10:05 AM EDT Rapid Fire  
Indian Head Knolls, Kings Park, NY 78.6 °F 81 °F 72 °F 79% WSW  at  2.1 mph 0.00 in / hr 157 ft 10:04 AM EDT Normal
Copiague Harbor, Copiague, NY 66.6 °F - 59 °F 76% North  at  0.0 mph 0.00 in / hr 10 ft 10:05 AM EDT Rapid Fire  
Atlantic St/Clay Pitts Rd, East Northport, NY 83.9 °F 91 °F 74 °F 71% WSW  at  0.0 mph 0.00 in / hr 200 ft 10:04 AM EDT Rapid Fire
APRSWXNET Farmingville NY , Farmingville, NY 75 °F 74 °F 72 °F 91% ESE  at  0 mph 0.00 in / hr 180 ft 9:30 AM EDT MADIS
Elwood Middle School, Greenlawn, NY 79.7 °F 81 °F 65 °F 60% NE  at  7.0 mph 0.00 in / hr 0 ft 10:05 AM EDT Normal  
Farmingville, Farmingville, NY 77.4 °F 79 °F 72 °F 84% South  at  0.0 mph 0.00 in / hr 150 ft 10:00 AM EDT Normal  
Centereach, Centereach, NY 76.9 °F 78 °F 71 °F 82% SE  at  1.0 mph 0.00 in / hr 128 ft 10:05 AM EDT Normal  
Kings Park, NY 75.4 °F 77 °F 67 °F 74% NE  at  0.0 mph 0.00 in / hr 23 ft 10:02 AM EDT Normal  
Amityville, Amityville, NY 71.2 °F - 71 °F 98% South  at  2.7 mph - / hr 43 ft 9:54 AM EDT Normal  
SeeMyIP.com Weather, St James, NY 78.8 °F 82 °F 74 °F 84% NW  at  0.7 mph 0.00 in / hr 148 ft 10:05 AM EDT Rapid Fire
Middle Country Library, Centereach, NY 79.3 °F 82 °F 71 °F 75% SW  at  8.0 mph 0.00 in / hr 94 ft 10:05 AM EDT Rapid Fire
Nassau/Suffolk County Line, East Farmingdale, NY 76.9 °F 78 °F 70 °F 80% NW  at  0.0 mph 0.00 in / hr 88 ft 10:05 AM EDT Rapid Fire
7th Ave and Elwood Rd, East Northport, NY 82.4 °F 86 °F 70 °F 66% NW  at  0.0 mph 0.00 in / hr 220 ft 10:04 AM EDT Normal  
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Public Information Statement
Mobile & Email Alerts Statement as of 6:00 am EDT on May 21, 2013

... Safe boating week is may 18-24 2013...

The National Weather Service and the National safe boating Council
will partner for National safe boating week may 18-24. This week
will highlight relevant weather and safety specific public service
announcements for the recreational boating public.

Todays topic is understanding a marine weather forecast.

Understanding a marine forecast is critical to safe boating. Weather
ND wave conditions can change suddenly... catching boaters off guard
an creating life threatening conditions. Take particular note of any
current advisories and warnings... including small craft
advisories... gale or storm warnings... which alert mariners to either
high winds or waves occurring now or forecast to occur up to 24
hours from now. Before setting out... obtain the latest marine
forecast and warning information from www.Weather.Gov/marine or NOAA
Weather Radio. Several days ahead of time you can begin listening
for extended outlooks which give general information out to the next
five days in both graphical and text formats.

For more information on hazardous weather and boating safety... visit
the following websites...

Http://www.NWS.NOAA.Gov/safeboating

Http://www.Safeboatingcouncil.Org

Publication information statements are online at

Http://www.NWS.NOAA.Gov/om/notif.Htm


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