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National Weather Service

Thursday, October 11, 2012

UPDATE: NWS Adds Fairfax County to Freeze Watch Friday Night

National Weather Service issues freeze watch areas west and north of D.C.; temperatures to be in the 30s across much of Fairfax County.

UPDATE: The National Weather Service has added Fairfax County to the Freeze Watch for Friday night going into Saturday morning. "Fairfax is now under the Freeze Watch too," said National Weather Service meteorologist Christopher Strong, in an e-mail to Patch. "The general theory of a watch is that there is a 50 percent chance or better than it's going to happen, and then a warning when we are nearly certain." The earliest freeze (32 F) at Dulles Airport (est. 1962) was Sept. 24, 1983, Strong said. The latest was Nov. 11, 2005, he noted. If there is a freeze, "we would be a little early, but not too far off a typical first freeze date." --- The National Weather Service has issued a freeze watch for late Friday night into Saturday morning …

Tuesday, October 2, 2012

Forecast: La Niña Weather Pattern Causing Warmer Fall Temperatures

Northern Virginia's extreme weather started last winter, meteorologists say.

Derechos, blizzards, hurricanes, thunderstorms, extreme heat...is there any wacky weather Northern Virginia hasn't seen in recent years? This past summer saw enough 100-plus degree days to make 2012 the most intense in 141 years of record-keeping according to the Capital Weather Gang. “Starting from this past winter, we had temperatures that were much above normal,” said Ken Widelski of the National Weather Service. “It was an abnormally warm winter, followed by a cooler than normal spring and we definitely had our periods of hot weather over the summer.” As for this June's derecho, it’s typical climatologically for this area to see a derecho every couple of years, Widelski explained. What was unique about this year's derecho was the …

Tuesday, September 18, 2012

UPDATE: Tornado, Flash Flood Watch Could Tangle Evening Commute

National Weather Service also issues hazardous weather warning for Fairfax County, metro region.

Update 2:07 p.m.: A flash flood watch has also been issued for Fairfax County until 8 p.m. Tuesday. Fairfax County says The county keeps a list of roads that historically flood and urges drivers to avoid them when warnings and watches are issued. Click here to see which of these roads are near your neighborhood. Original: The National Weather Service has issued a tornado watch for Fairfax County and the entire metro region until 7 p.m. Tuesday. The tornado watch, meaning there is a potential for tornadoes to develop, comes on top of a hazardous weather outlook the service issued earlier this morning. "Showers and thunderstorms are expected along and ahead of a cold front through this evening. Heavy downpours could lead to localized flash …

Friday, June 22, 2012

Kingstowne Under Severe Thunderstorm Watch Until 9 Tonight

Storms could bring gusts, downpours.

Kingstowne and the surrounding areas including ZIP codes 22315, 22310 and 22150 are under a severe thunderstorm watch until tonight.  National Weather Service says severe storms could cause damaging winds and heavy rainfall. Storms could make for a hazardous rush-hour commute this afternoon. The watch is in effect until 9 p.m. Friday.   Sign up here for the Kingstowne Patch email newsletter!        

Friday, April 20, 2012

Wet Weekend on the Way

Rain will still leave region below normal rainfall for April.

Grab your umbrellas! Fairfax County residents can expect a rainy weekend, but the showers won’t be enough to bring rainfall levels up to normal for April. For Saturday, expect a chance of showers and even thunderstorms, according to the National Weather Service. The chance of precipitation is 60 percent during the day and 80 percent into Saturday night. Rain up to three-quarters of an inch to more than an inch is possible. The chance of rain on Sunday is 80 percent, according to the weather service, with new rainfall amounts of a half-inch to an inch. Rain is also in the forecast for Monday, and beyond, with a chance of precipitation on Tuesday, according to the weather service. The sun should make an appearance on Wednesday. The rain will…

Thursday, August 25, 2011

NWS Issues Flash Flood Watch for Fairfax County

Warning in effect starting noon Thursday.

The National Weather Service issued a Flash Flood Watch for Fairfax and surrounding counties from noon Thursday through the evening. Showers and thunderstorms are expected to develop this afternoon and early into this evening, a few of them capable of producing heavy and widespread rainfall. NWS is predicting one to two inches of rain in the I-95 corridor tonight. A band of heavier rainfall, which could measure more than two inches in the span of a couple of hours, is possible as well. The Weather Channel shows most of the rain in our area starting at 4 p.m., with the heaviest storms occurring between 4:30 and 5:30 p.m. The Virginia Department of Transportation(VDOT) offers these tips for driving in heavy rain:

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