Wind Advisory in effect from 5 am to 12 PM CDT Sunday... Light to moderate showers continue across the area with an isolated thunderstorm across the southern sections of Iowa. The area of thunderstorms is near Centerville. Additional showers and thunderstorms are likely over the next one to two hours...expect up to a quarter inch of rain at some locations. The showers and thunderstorms are moving to the northeast at 40 mph. The wind remain from the east for now with winds of 10 to 20 mph and will increase during the evening hours to 15 to 25 mph. However...after midnight tonight the wind is expected to increase rapidly from the north resulting in wind gusts in excess of 45 mph at times.
Forecast for Grundy
Updated: 3:56 am CDT on May 10, 2008
Flood Watch in effect from this evening through Sunday afternoon...
Today
Cloudy. Showers likely in the afternoon. High in the lower 60s. Southeast wind 5 to 15 mph. Chance of showers 70 percent.
Showers and isolated thunderstorms in the evening...then rain after midnight. Windy. Precipitation may be heavy at times. Low in the mid 40s. East wind 10 to 15 mph with gusts to around 30 mph increasing to north 20 to 30 mph with gusts to around 40 mph after midnight. Chance of precipitation near 100 percent.
Sunday
Rain likely in the morning...then a chance of showers in the afternoon. Windy. High in the mid 50s. North wind 20 to 30 mph with gusts to around 45 mph. Chance of precipitation 70 percent.
Partly cloudy. Low in the upper 30s. Northwest wind 10 to 15 mph with gusts to around 30 mph shifting to the north around 5 mph after midnight.
Monday
Mostly sunny. Warmer. High in the upper 60s. East wind 5 to 10 mph with gusts to around 20 mph shifting to the southeast 10 to 20 mph with gusts to around 30 mph in the afternoon.
... Flash Flood Watch in effect from 7 PM CDT this evening through Sunday morning... ... Flood Watch is cancelled...
The National Weather Service in Des Moines has issued a
* Flash Flood Watch for Boone... Dallas... Grundy... Hamilton Hardin... Jasper... Marshall... Polk... Poweshiek... story... Tama and Webster... Black Hawk... Madison... Mahaska... Marion Warren... Adair... Cass... Audubon... Calhoun... Carroll Crawford... Greene... Guthrie and SAC.
* From 7 PM CDT this evening through Sunday morning
* expect showers and thunderstorms to increase in coverage this evening and continue overnight. Numerous rounds of precipitation are expected with the potential for very heavy rainfall to occur. Rainfall amounts of one and one half to three inches are possible. These rainfall amounts over a short period of time will cause flash flooding across the area. In addition... numerous streams including the Des Moines... Iowa... Cedar and south Skunk River basins are already at elevated flow levels and could again exceed flood stage depending on where the heaviest rains materialize.
A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation.
You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.
The Flood Watch for portions of central Iowa... northeast Iowa... south central Iowa... southwest Iowa and west central Iowa has been cancelled.
Wind Advisory
Statement as of 3:35 PM CDT on May 10, 2008
... Wind Advisory in effect from 5 am to 12 PM CDT Sunday...
The National Weather Service in Des Moines has issued a Wind Advisory... which is in effect from 5 am to 12 PM CDT Sunday.
Expect strong northwest winds to develop late tonight with winds increasing to 25 to 35 mph. Wind gusts to 45 mph are possible. The gusty winds will continue into Sunday morning before diminishing.
A Wind Advisory means that sustained winds of 30 mph are expected. Winds this strong can make travel difficult... especially for high profile vehicles. Extra caution is advised.
