Philadelphia, PA

6:56 AM EDT on May 21, 2013 (GMT -0400)
Elev: 203 ft
Lon: 75.0° W
Lat: 40.1° N
Source
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 Updated 6:49 AM EDT Get Free Weather Stickers® Share:
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Global: Violent tornado devastates Moore, Oklahoma
Active Advisory: Special Statement (US Severe Weather) Active Notice: Public Information Statement
News
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May 21, 2013
Parents hope to be reunited with their missing children.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
Oklahoma Tornado: How to Help
May 20, 2013
The Salvation Army says it is activating disaster response teams and mobile feeding units to help residents and rescuers in Moore.
Moore, Okla. Tornado Timeline
May 21, 2013
On May 20, 2013, a large deadly tornado ripped through the Oklahoma City area. Click to read the timeline of the tornado event
At Least 20 Children Dead at Okla. Elementary
May 21, 2013
Several children have been pulled out of the rubble alive at a school in an Oklahoma City suburb.
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.
At Least 51 Dead, 20 of them Children
May 21, 2013
A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.
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.
Tornado Hits OKC Suburb, Kicking Up Debris
May 19, 2013
A tornado kicked up debris in an Oklahoma City suburb and threatened a number of tourist attractions on historic Route 66 but there were no immediate reports of injuries or major damage.
Tornado Touches Down in Wichita
May 19, 2013
State emergency officials are monitoring a tornado in the Wichita area.
BREAKING: Oklahoma Tornado Devastation
May 20, 2013
The latest breaking news from the scene, tornado warnings, photos and more.
Mice Return From a Month in Space
May 19, 2013
Mice and other critters return from a month long stay in space.
Heavy Rains Cause Flooding in North Georgia
May 20, 2013
Some locations have seen 5 to 6 inches of rainfall.
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

Philadelphia Weather at a Glance

Updated 6:49 AM EDT
Elevation
167 ft
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Now
Overcast
Overcast
Temperature
66.9 °F
Feels Like 66.9 °F
Wind(mph)
1.1
Sunrise / Set
5:39 AM
8:14 PM
Moon
Waxing Gibbous
Today
Chance of a Thunderstorm 82 °F
Chance of a Thunderstorm
20% chance of precipitation
Tonight
Chance of a Thunderstorm 68 °F
Chance of T-storms
30% chance of precipitation
Tomorrow
Chance of a Thunderstorm 84 | 66 °F
Chance of T-storms
40% chance of precipitation
Thursday
Chance of a Thunderstorm 75 | 61 °F
Chance of T-storms
50% chance of precipitation
Friday
Chance of a Thunderstorm 68 | 54 °F
Chance of T-storms
70% chance of precipitation
Saturday
Chance of Rain 64 | 48 °F
Chance of Rain
50% chance of precipitation
Today is forecast to be nearly the same temperature as yesterday.
Conditions
Pressure
29.99 in
Visibility
4.0 miles
Clouds
Overcast 700 ft
Moisture
Humidity
99%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KPNE 210954Z AUTO 23007KT 4SM BR OVC007 19/18 A2999 RMK AO2 SLP153 T01940183 $
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
66.9 °F
78,79,78,75,73,72,67,67,69,66,65,66,66
Dew Point
67 °F
Wind
Speed / Dir
1.1 mph from East
Wind Gust
Health
UV
0 out of 16
Pollen
6.70 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with a chance of rain, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 82F. 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. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 30%.
Wednesday
chancetstorms Partly cloudy with a chance of rain, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 84F. Winds from the SW at 10 to 15 mph. Chance of rain 40%.
Wednesday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. Low of 66F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Thursday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 75F. Winds from the SSW at 10 to 15 mph. Chance of rain 50%.
Thursday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and rain. Low of 61F. Winds from the SSW at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.
Friday
chancetstorms Partly cloudy with a chance of a thunderstorm and rain. Fog early. High of 68F. Winds from the SSW at 5 to 10 mph shifting to the West in the afternoon. Chance of rain 70% with rainfall amounts near 0.4 in. possible.
Friday Night
nt_chancerain Partly cloudy with a chance of rain. Fog overnight. Low of 54F. Winds from the NNW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.6 in. possible.
Saturday
chancerain Partly cloudy with a chance of rain in the morning, then clear. High of 64F. Breezy. Winds from the NNW at 15 to 20 mph. Chance of rain 50%.
Saturday Night
nt_mostlycloudy Mostly cloudy. Low of 48F. Winds from the NW at 10 to 15 mph.
Sunday
mostlycloudy Overcast. High of 68F. Winds from the NW at 10 to 15 mph.
Sunday Night
nt_mostlycloudy Overcast. Low of 41F. Winds from the NNW at 5 to 10 mph.
Monday
mostlycloudy Mostly cloudy. High of 70F. Winds from the WNW at 5 to 10 mph.
Monday Night
nt_partlycloudy Clear. Low of 45F. Winds less than 5 mph.
Tuesday
clear Clear. High of 73F. Winds from the SSW at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Clear. Fog overnight. Low of 59F. Winds from the South at 5 to 10 mph.
Wednesday
chancerain Partly cloudy with a chance of rain. High of 73F. Winds less than 5 mph. Chance of rain 40%.
Wednesday Night
nt_mostlycloudy Mostly cloudy. Fog overnight. Low of 59F. Winds less than 5 mph.
Thursday
partlycloudy Partly cloudy. High of 75F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.
Friday
partlycloudy Partly cloudy. High of 79F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Fog overnight. Low of 63F. Winds less than 5 mph.
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Weather Forecast for Philadelphia PA

View Calendar 10-Day Forecast for station KPAHUNTI3

Tuesday, 21
Chance of a Thunderstorm
82 | 68 °F
Chance of a Thunderstorm
Chance of
Precipitation
20%
Wednesday, 22
Chance of a Thunderstorm
84 | 66 °F
Chance of T-storms
Chance of
Precipitation
40%
Thursday, 23
Chance of a Thunderstorm
75 | 61 °F
Chance of T-storms
Chance of
Precipitation
50%
Friday, 24
Chance of a Thunderstorm
68 | 54 °F
Chance of T-storms
Chance of
Precipitation
70%
Saturday, 25
Chance of Rain
64 | 48 °F
Chance of Rain
Chance of
Precipitation
50%
Sunday, 26
Mostly Cloudy
68 | 41 °F
Mostly Cloudy
Chance of
Precipitation
0%
Monday, 27
Mostly Cloudy
70 | 45 °F
Mostly Cloudy
Chance of
Precipitation
0%
Tuesday, 28
Clear
73 | 59 °F
Clear
Chance of
Precipitation
0%
Wednesday, 29
Chance of Rain
73 | 59 °F
Chance of Rain
Chance of
Precipitation
40%
Thursday, 30
Fog
75 | 63 °F
Fog
Chance of
Precipitation
0%
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with a chance of rain, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 82F. 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. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 66 | 63 76 | 65 80 | 64 71 | 65
Wind 3 mph SW 9 mph SW 9 mph SW 7 mph SW
Humidity 91% 70% 57% 83%
Chance of Precip. 10% 20% 20% 30%
Cloud Cover 50% 67% 69% 67%
Conditions Partly Cloudy Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:39 AM
8:14 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.63], Average RMSE [1.58]
The National Weather Service forecast quality is good. MaxT RMSE [1.55], Average RMSE [2.02] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
chancetstorms Partly cloudy with a chance of rain, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 84F. Winds from the SW at 10 to 15 mph. Chance of rain 40%.
Wednesday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. Low of 66F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 70 | 64 79 | 65 78 | 64 72 | 65
Wind 7 mph SW 11 mph SW 10 mph SW 8 mph SSW
Humidity 86% 66% 60% 78%
Chance of Precip. 30% 40% 40% 40%
Cloud Cover 68% 70% 69% 73%
Conditions Chance of a Thunderstorm Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:38 AM
8:15 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.56], Average RMSE [1.69]
The National Weather Service forecast quality is good. MaxT RMSE [1.74], Average RMSE [2.25] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 75F. Winds from the SSW at 10 to 15 mph. Chance of rain 50%.
Thursday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and rain. Low of 61F. Winds from the SSW at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 67 | 65 73 | 64 72 | 63 68 | 65
Wind 8 mph SSW 12 mph SSW 9 mph SW 8 mph SSW
Humidity 92% 72% 72% 91%
Chance of Precip. 40% 50% 50% 40%
Cloud Cover 78% 82% 85% 100%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:37 AM
8:16 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.16], Average RMSE [1.62]
The National Weather Service forecast quality is good. MaxT RMSE [1.72], Average RMSE [1.56] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Friday
chancetstorms Partly cloudy with a chance of a thunderstorm and rain. Fog early. High of 68F. Winds from the SSW at 5 to 10 mph shifting to the West in the afternoon. Chance of rain 70% with rainfall amounts near 0.4 in. possible.
Friday Night
nt_chancerain Partly cloudy with a chance of rain. Fog overnight. Low of 54F. Winds from the NNW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.6 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 66 | 62 64 | 64 65 | 64 54 | 53
Wind 5 mph SW 8 mph SSW 8 mph WNW 12 mph NNW
Humidity 89% 100% 94% 96%
Chance of Precip. 20% 30% 30% 30%
Cloud Cover 78% 42% 66% 0%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of Rain
Sunrise & Sunset
5:37 AM
8:17 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.02], Average RMSE [2.89]
The National Weather Service forecast quality is good. MaxT RMSE [2.28], Average RMSE [2.04] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Saturday
chancerain Partly cloudy with a chance of rain in the morning, then clear. High of 64F. Breezy. Winds from the NNW at 15 to 20 mph. Chance of rain 50%.
Saturday Night
nt_mostlycloudy Mostly cloudy. Low of 48F. Winds from the NW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 47 64 | 46 58 | 44 51 | 37
Wind 12 mph NNW 15 mph North 14 mph NNW 11 mph NW
Humidity 80% 50% 59% 56%
Chance of Precip. 30% 20% 10% 0%
Cloud Cover 0% 62% 2% 99%
Conditions Chance of Rain Chance of Rain Clear Overcast
Sunrise & Sunset
5:36 AM
8:17 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.90], Average RMSE [2.32]
The National Weather Service forecast quality is fair. MaxT RMSE [2.78], Average RMSE [2.79] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Sunday
mostlycloudy Overcast. High of 68F. Winds from the NW at 10 to 15 mph.
Sunday Night
nt_mostlycloudy Overcast. Low of 41F. Winds from the NNW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 38 61 | 40 64 | 44 51 | 32
Wind 9 mph NW 12 mph NW 9 mph NW 7 mph North
Humidity 58% 44% 45% 47%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 98% 95% 99% 98%
Conditions Overcast Overcast Overcast Overcast
Sunrise & Sunset
5:35 AM
8:18 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.50], Average RMSE [2.48]
The National Weather Service forecast quality is fair. MaxT RMSE [2.82], Average RMSE [2.71] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Monday
mostlycloudy Mostly cloudy. High of 70F. Winds from the WNW at 5 to 10 mph.
Monday Night
nt_partlycloudy Clear. Low of 45F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 46 | 31 65 | 42 67 | 47 51 | 45
Wind 5 mph NW 5 mph NW 7 mph West 5 mph SW
Humidity 57% 42% 49% 80%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 96% 88% 60% 0%
Conditions Overcast Mostly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:35 AM
8:19 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.95], Average RMSE [2.34]
The National Weather Service forecast quality is fair. MaxT RMSE [2.56], Average RMSE [3.00] : Use NWS
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
clear Clear. High of 73F. Winds from the SSW at 5 to 10 mph.
Tuesday Night
nt_partlycloudy Clear. Fog overnight. Low of 59F. Winds from the South at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 46 65 | 54 70 | 56 58 | 58
Wind 2 mph West 5 mph SSW 8 mph South 5 mph SSE
Humidity 89% 65% 64% 100%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 13%
Conditions Clear Clear Clear Fog
Sunrise & Sunset
5:34 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.18], Average RMSE [3.23]
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
chancerain Partly cloudy with a chance of rain. High of 73F. Winds less than 5 mph. Chance of rain 40%.
Wednesday Night
nt_mostlycloudy Mostly cloudy. Fog overnight. Low of 59F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 59 | 59 68 | 62 70 | 64 60 | 60
Wind 3 mph South 2 mph South 3 mph SSE 2 mph SSE
Humidity 100% 77% 80% 100%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 40% 60% 74% 77%
Conditions Fog Partly Cloudy Mostly Cloudy Fog
Sunrise & Sunset
5:34 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.84], Average RMSE [3.27]
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 75F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 63 | 63 72 | 68 74 | 70 64 | 64
Wind 1 mph SSE 3 mph South 4 mph South 3 mph South
Humidity 100% 85% 85% 100%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 71% 63% 54% 45%
Conditions Fog Partly Cloudy Partly Cloudy Fog
Sunrise & Sunset
5:33 AM
8:21 PM
Source: BestForecast at 4:08 AM EDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 79F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Fog overnight. Low of 63F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 65 | 65 75 | 67 76 | 71 67 | 67
Wind 2 mph SSW 2 mph SSW 3 mph SSW 3 mph South
Humidity 97% 76% 82% 100%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 36% 37% 49% %
Conditions Fog Partly Cloudy Partly Cloudy Fog
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal (KPNE) 70 °F 51 °F
Record (KPNE) 82 °F (1998) 39 °F (2002)
Yesterday 87.6 °F 58.3 °F
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 Moderate
PM2.5
Yesterday Good
OZONE
Current Good
PM2.5
Current Good
OZONE
Tuesday Moderate
OZONE
Tuesday Moderate
PM2.5
Wednesday Moderate
PM2.5
Wednesday Good
OZONE
Thursday Moderate
PM2.5
Thursday Good
OZONE
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:39 AM EDT 8:14 PM EDT
Civil Twilight 5:08 AM EDT 8:45 PM EDT
Nautical Twilight 4:29 AM EDT 9:25 PM EDT
Astronomical Twilight 3:45 AM EDT 10:09 PM EDT
Moon 4:25 PM EDT 3:05 AM EDT
Length Of Visible Light 15h 37m
Length of Day
14h 35m
Tomorrow will be 1m 37s longer.
Waxing Gibbous, 82% 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
75 °F
Erie
71 °F
Meadville
71 °F
Philadelphia
71 °F
Pittsburgh
70 °F
Du Bois
57 °F
Selinsgrove
59 °F
Fort Indiantown Gap
59 °F
Williamsport
59 °F
Quakertown
59 °F
Allentown
Record Extremes
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Travel Planning
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Aviation
City Temp. Conditions Updated
Northeast Philadelphia 67 °F Overcast 5:54 AM EDT
Philadelphia Wings Airport This station is not reporting.
Mount Holly 67 °F Overcast 5:54 AM EDT
Trenton 66 °F Overcast 6:53 AM EDT
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Flight To ETA Status
No flights were found.
Flight Tracker by FlightAware FlightAware
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Type Condition
Flight Rule: IFR (KPNE)
Wind Speed: 7.0 kts.
Wind Dir: 90° (East)
Ceiling: 700 ft

METAR KPNE 210954Z AUTO 23007KT 4SM BR OVC007 19/18 A2999 RMK AO2 SLP153 T01940183 $

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Nearby Events
Event Date Forecast
Danielson, Deerhoof, and People Get Ready 8:00 PM EDT
2013-04-15		 Partly Cloudy, 55°F
Small Houses 9:00 PM EDT
2013-04-15		 Partly Cloudy, 55°F
TIMON OF ATHENS 8:00 PM EDT
2013-04-15		 Partly Cloudy, 55°F
Walnut Street Theatre's Good People 8:00 PM EDT
2013-04-16		 Chance of Rain, 63°F
Ivan & Alyosha 9:00 PM EDT
2013-04-16		 Chance of Rain, 62°F
Walnut Street Theatre's Good People 8:00 PM EDT
2013-04-17		 Chance of Rain, 64°F
Event data courtesy eviesays.com
Sports
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Watch the nearly year-long satellite animation as Weather Underground calls out the most significant weather events of the past year, including Superstorm Sandy and Hurricane Isaac.

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Weather Stations
Station Location Temp. Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Philadelphia, Philadelphia, PA 66.9 °F 67 °F 99% East  at  1.1 mph - / hr 167 ft 6:49 AM EDT Normal
Beth Ayres/High Road, Huntingdon Valley, PA 66.7 °F 66 °F 98% West  at  0.0 mph 0.00 in / hr 250 ft 6:53 AM EDT Normal  
Bryn Athyn, Huntingdon Valley, PA 66.8 °F 66 °F 98% SW  at  0.0 mph 0.00 in / hr 280 ft 6:56 AM EDT Rapid Fire  
Grant and Academy, Philadelphia, PA 67.8 °F 65 °F 90% ESE  at  6.0 mph 0.00 in / hr 89 ft 6:56 AM EDT Rapid Fire  
Bensalem, PA 68.1 °F 67 °F 95% West  at  0.0 mph 0.00 in / hr 125 ft 6:56 AM EDT Normal  
Rydal, Jenkintown, PA 66.9 °F 66 °F 98% WSW  at  0.0 mph 0.00 in / hr 318 ft 6:55 AM EDT Normal  
Willow Grove Weather Center, Willow Grove, PA 66.4 °F 66 °F 97% West  at  3.0 mph 0.00 in / hr 440 ft 6:55 AM EDT Normal  
CWOP# AR939, Penndel, PA 66.3 °F 64 °F 93% SW  at  0.0 mph 0.00 in / hr 92 ft 6:51 AM EDT Normal  
Croydon, Croydon, PA 67.6 °F 64 °F 88% North  at  0.0 mph 0.00 in / hr 36 ft 6:55 AM EDT Rapid Fire
Gilham & Battersby, Philadelphia, PA 69.3 °F 68 °F 96% SW  at  0.0 mph 0.00 in / hr 72 ft 6:55 AM EDT Normal  
Roslyn, Abington, PA 66.6 °F 60 °F 80% West  at  0.9 mph 0.00 in / hr 295 ft 6:56 AM EDT Rapid Fire
Richboro, PA 66.5 °F 63 °F 88% WSW  at  3.5 mph 0.00 in / hr 317 ft 6:55 AM EDT Rapid Fire
APRSWXNET Levittown PA , Levittown, PA 65 °F 64 °F 98% SW  at  0 mph 0.00 in / hr 40 ft 6:28 AM EDT MADIS
Highland Park, Levittown, PA 65.9 °F 63 °F 91% West  at  2.2 mph 0.00 in / hr 108 ft 6:56 AM EDT Rapid Fire  
Richboro, PA 67.1 °F 67 °F 99% West  at  0.0 mph 0.00 in / hr 358 ft 6:55 AM EDT Normal  
Cinnaminson Street, Riverton, NJ 68.5 °F 65 °F 89% NW  at  0.0 mph 0.00 in / hr 13 ft 6:55 AM EDT Normal  
APRSWXNET Palmyra NJ , Palmyra, NJ 67 °F 66 °F 96% SW  at  0 mph 0.00 in / hr 19 ft 6:34 AM EDT MADIS
Palmyra, NJ, Palmyra, NJ 68.3 °F 64 °F 86% WSW  at  7.6 mph - / hr 16 ft 6:51 AM EDT Normal  
North Hills, North Hills, PA 66.5 °F 65 °F 95% SSW  at  0.0 mph 0.00 in / hr 287 ft 6:55 AM EDT Rapid Fire
NOS_PORTS Burlington, Delaware River, NJ, Croydon, PA 67 °F - - North  at  - 0.00 in / hr 0 ft 6:30 AM EDT MADIS
HorshamWeather.Com, Horsham, PA 67.1 °F 65 °F 94% North  at  1.0 mph 0.00 in / hr 325 ft 6:56 AM EDT Rapid Fire
Palmyra, NJ 67.6 °F 67 °F 96% SSW  at  0.0 mph 0.00 in / hr 20 ft 6:49 AM EDT Normal
Cinnaminson, NJ 67.6 °F 66 °F 96% North  at  - - / hr 75 ft 6:46 AM EDT Normal  
APRSWXNET Glenside PA , Oreland, PA 67 °F 66 °F 96% NNW  at  0 mph 0.00 in / hr 311 ft 6:31 AM EDT MADIS
Stover MIll, Warminster, PA 65.0 °F 64 °F 98% South  at  0.0 mph 0.00 in / hr 223 ft 6:56 AM EDT Rapid Fire
Maple Glen, PA 66.4 °F 66 °F 99% SE  at  3.1 mph 0.00 in / hr 345 ft 6:56 AM EDT Rapid Fire  
Office of Emergency Management, City of Burlington, NJ 68.1 °F 66 °F 93% WNW  at  0.0 mph 0.00 in / hr 11 ft 6:55 AM EDT Rapid Fire
Downtown Fort Washington, Fort Washington, PA 66.2 °F 61 °F 83% North  at  0.0 mph 0.00 in / hr 229 ft 6:56 AM EDT Rapid Fire
Maple Point, Langhorne, PA 67.0 °F 67 °F 99% WSW  at  0.0 mph 0.00 in / hr 165 ft 6:55 AM EDT Normal
Maple Glen, Maple Glen, PA 66.0 °F 66 °F 99% NW  at  0.0 mph 0.00 in / hr 358 ft 6:56 AM EDT Rapid Fire  
JAT Observatory, Fairless Hills, PA 65.3 °F 65 °F 98% North  at  0.0 mph 0.00 in / hr 95 ft 6:33 AM EDT Normal
Church Rd, Cinnaminson, Cinnaminson, NJ 67.9 °F 67 °F 97% SW  at  0.0 mph 0.00 in / hr 69 ft 6:56 AM EDT Normal  
APRSWXNET Camden NJ , Pennsauken, NJ 67 °F 65 °F 94% West  at  0 mph 0.00 in / hr 19 ft 6:28 AM EDT MADIS
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Special Statement
Mobile & Email Alerts Statement as of 5:08 AM EDT on May 21, 2013

... Patchy fog this morning...

Patchy fog has developed across the area this morning. Some
locally dense fog will occur with visibilities less than one mile
will occur. The fog will begin to burn off by around 8 am.

Drivers are urged to use caution while driving. Be prepared for
reduced visibility in spots and leave plenty of room between your
vehicle and the one ahead of you.


Public Information Statement
Mobile & Email Alerts Statement as of 4:45 am EDT on May 21, 2013

... National safe boating week may 18 through may 24...

This is the fourth in a daily series of messages produced by the
partnered National Weather Service and National safe boating Council.

To know the weather while on the water... you should have a vhf
receiver with built in NOAA Weather Radio channels. If you venture
beyond the 25 nautical mile range of shore... consider buying a good
hf single sideband transceiver and satellite phone.

Understanding the marine forecast is critical to safe boating.
Winds... waves and weather can change suddenly... catching boaters off
guard and creating life threatening conditions.

When checking the weather... note whether there are any advisories or
warnings posted... which alert mariners to various wind and wave
conditions that can be hazardous for marine travel.

Special marine warnings are issued for a sudden increase in winds to
34 knots - 39 mph... hail three quarters of an inch in diameter or
even waterspouts.

Marine weather statements bring attention to significant rapidly
changing weather conditions on the water including gusty winds... non
severe thunderstorms... limited visibility in fog... or infrequently
can highlight a distant approaching major storm three to five days
in advance of its arrival.

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 65
days... also found on the web in both graphical and text format at
www.Weather.Gov/phi.


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