The National Weather Service has issues a flash flood watch for the this afternoon.
The advisory covers virtually of the Washington, D.C., area, including Fairfax County and Reston.
From the NWS:
FLASH FLOOD WATCH IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH THIS EVENING
WIDESPREAD HEAVY RAIN AND THUNDERSTORMS ARE EXPECTED AHEAD OF A COLD FRONT THAT WILL CROSS THE AREA TONIGHT.
RAINFALL OF ONE TO TWO INCHES WITH LOCALLY HIGHER AMOUNTS WILL BE POSSIBLE IN AN HOUR. THESE RATES COULD RESULT IN FLASH FLOODING…PARTICULARLY IN URBANIZED AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
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 National Weather Service has issued a heat advisory for the entire D.C. Metro area from noon to 8 p.m. Monday as temperatures will climb into the high 90s.
With the heat index, it will feel like 109, meteorologists said.
A heat advisory means that a period of high temperatures is expected and the combination of high temperatures and high humidity creates a situation in which heat illnesses are possible, says the NWS.
From the NWS:
* HEAT INDEX VALUES…UP TO 109 DUE TO TEMPERATURES IN THE MID TO UPPER 90S AND DEWPOINTS IN THE LOW TO MID 70S
* IMPACTS…RISK OF HEAT-RELATED ILLNESS FOR THOSE WITHOUT AIR- CONDITIONING OR THOSE OUTDOORS FOR AN EXTENDED PERIOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE WHEN POSSIBLE.
RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING.KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE-FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER.
TO REDUCE RISK DURING OUTDOOR WORK…THE OCCUPATIONAL SAFETY
AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS.ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY – CALL 9 1 1.
Photo: Summer sun/Credit: Lee via Flickr
The National Weather Service has issued a Flash Flood Watch from 2 p.m. Tuesday to late Tuesday night for Reston, Northern Virginia and most of the Washington, DC area.
From the NWS:
SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP LATE TODAY INTO TONIGHT. THESE STORMS WILL BE SLOW MOVING AND CAPABLE OF PRODUCING HEAVY RAINFALL.
RAINFALL AMOUNTS OF 1 TO 2 INCHES WILL BE POSSIBLE IN AN HOUR. WITH SATURATED GROUND…THESE RATES COULD RESULT IN FLASH FLOODING.
SMALL STREAMS AND URBAN AREAS WILL BE ESPECIALLY SUSCEPTIBLE TO
RAPID RISES OF WATER ONTO NORMALLY DRY AREAS.A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING.
The National Weather Service has issued a Flash Flood Watch for Reston, Northern Virginia and the entire Washington, DC, region from late Friday night to Saturday night.
Forecasters say heavy rains will develop Friday night in the Shenandoah Valley and spread northeast across the rest of the area.
From the NWS:
SATURDAY MORNING. RAINS…HEAVY AT TIMES WITH EMBEDDED
THUNDERSTORMS ARE EXPECTED SATURDAY INTO SATURDAY EVENING WITH ONE TO THREE INCHES OF RAIN LIKELY BY THE TIME A COLD FRONT CLEARS THE AREA SATURDAY NIGHT.POTENTIAL EXISTS FOR FLASH FLOODING TO OCCUR ON SMALL STREAMS…CREEKS AND URBAN AREAS. SIGNIFICANT RISES ARE ALSO LIKELY ON MAIN STEM RIVERS SUCH AS THE POTOMAC.
A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
The entire Washington, D.C. metro area is under a Flash Flood Watch from Saturday evening though Sunday morning, the National Weather Service says.
The NWS says showers and thunderstorms will increase in coverage from wets to East late Saturday afternoon and continue into Sunday morning.
From the NWS:
SOME OF THE STORMS WILL CONTAIN TORRENTIAL DOWNPOURS, WHICH COULD LEAD TO FLASH FLOODING.
WIDESPREAD RAINFALL AMOUNTS OF ONE TO THREE INCHES CAN BE EXPECTED WITH LOCALLY HIGHER AMOUNTS
POSSIBLE.RAINFALL RATES OF ONE TO TWO INCHES PER HOUR COULD
OCCUR WITH THE STONGEST THUNDERSTORMS.HEAVY RAINFALL IN SHORT PERIODS OF TIME MAY CAUSE RAPID RISES ON CREEKS AND STREAMS AS WELL AS FLASH FLOODING IN URBAN AREAS.
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 National Weather Service has issued a Severe Thunderstorm Warning for Northwestern Fairfax County until 5 p.m. The storms moving through could produce high winds and large hail.
From NWS:
AT 444 PM EDT…DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM COUNTRYSIDE TO DULLES INTERNATIONAL AIRPORT TO ARCOLA…MOVING SOUTHEAST AT 20 MPH.LOCATIONS IMPACTED INCLUDE.. HERNDON…RESTON…SOUTH RIDING…LOWES ISLAND…BRAMBLETON…DULLES
INTERNATIONAL AIRPORT…CENTREVILLE…COUNTRYSIDE…STERLING…
ARCOLA…CHANTILLY…GREAT FALLS…WOLF TRAP AND STERLING PARK.
The National Weather Service has issued a Tornado Watch for Northern Virginia and the D.C. area through 8 p.m. Monday.
A watch means conditions are favorable for a tornado to form. It does not mean a tornado has been sighted.
Storms are expected to move into the area between 4 and 9 p.m. Heavy rains and possible damaging winds are expected.
Rain may be heavy at times, it will not last long enough to cause flash flooding, the NWS said.
Severe weather is expected to hit Reston, Northern Virginia and most of the Washington, D.C. area Monday afternoon.
The National Weather Service has issued a flash flood watch that will be in effect until late Monday night. The heaviest rains will occur between 5 and 9 p.m.
From the NWS:
SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE THIS
AFTERNOON AND CONTINUE THROUGH THROUGH MOST OF TONIGHT.SOME OF THE STORMS WILL CONTAIN TORRENTIAL DOWNPOURS, WHICH MAY LEAD TO FLASH FLOODING.
AVERAGE RAINFALL AMOUNTS BETWEEN ONE TO TWO INCHES ARE EXPECTED…BUT LOCALIZED AMOUNTS IN EXCESS OF THREE
INCHES ARE POSSIBLE IN HEAVIER THUNDERSTORMS.RAINFALL RATES AROUND ONE TO TWO INCHES PER HOUR ARE EXPECTED IN HEAVIER THUNDERSTORMS. RECENT RAINFALL HAS SATURATED SOILS WHICH WILL ALSO INCREASE THE THREAT FOR FLASH FLOODING DURING THIS TIME.
HEAVY RAINFALL IN SHORT PERIODS OF TIME MAY CAUSE RAPID RISES ON
CREEKS AND STREAMS AS WELL AS FLASH FLOODING IN URBAN AREAS.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 National Weather Service is predicting more than an inch of rain in Northern Virginia beginning Sunday evening. A flood watch has been issued for low-lying areas of the Metropolitan Washington area beginning at 7 p.m. Sunday.
From the National Weather Service:
MODERATE TO LOCALLY HEAVY RAIN WILL OVERSPREAD THE REGION THIS EVENING THROUGH TONIGHT… RAINFALL TOTALS AROUND ONE AND A HALF INCHES ARE EXPECTED ACROSS THE GREATER BALTIMORE-WASHINGTON METRO AREA. LOCALLY HIGHER AMOUNTS ARE POSSIBLE… ESPECIALLY ALONG AND IMMEDIATELY EAST OF THE BLUE RIDGE/CATOCTIN MOUNTAIN.
EXPECT SMALL STREAMS AND CREEKS TO RISE… POSSIBLY OVERFLOWING THEIR BANKS. IN ADDITION… FLOODING MAY OCCUR IN LOW LYING AND POOR DRAINAGE AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS…A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS.
PLEASE MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.
The National Weather Service has issued a Winter Storm Warning for Reston and the Washington, D.C., metro area from late Wednesday night through 9 p.m. Thursday.
The NWS forecasts 4 to 8 inches in the area, as well as a trace of ice.
The weather will start as a wintry mix around midnight tonight, then change to all snow. Snow will be heaviest Thursday morning through afternoon, the NWS says.
Expect snow-covered roads with visibility of a quarter-mile at times and temperatures in the 20s to low 30s.
Reston Now will update you with any closings.
File photo by Charlotte Geary
Many roads and sidewalks remain icy after Sunday’s freezing rain, and the weather has caused delays and openings.
Fairfax County Public Schools are closed on Monday. School age child care centers (SACC) is open.
Fairfax County Government offices are open, however employees have been granted unscheduled leave. Emergency service personnel should report as scheduled.
The federal government is opening two hours late.
The National Weather Service has issued a Dense Fog Alert for Northern Virginia through 9 a.m. Visibility is one-quarter mile or less.
Reston Now will keep you updated with any other delays, closings or road issues.
Photo: Ice-covered tree in Reston/Credit: Robbie Nolan via Twitter
(Update, Sunday, noon) The National Weather Service has upgraded the forecast from a Winter Weather Advisory to a Winter Storm Warning.
The Winter Storm Warning for all of the Washington area, including Reston, is in effect until 3 a.m. Monday.
Forecasters say to expect snow, sleet and freezing rain. There may be a coating to an inch of snow that will change to sleet and freezing rain this afternoon.
There could be a one-quarter inch accumulation of ice, the NWS says.
Original story, Saturday 7 p.m.:
The National Weather Service has issued a Winter Weather Advisory for Reston and the Washington, D.C. area from early Sunday through early Monday. Expect a mix of conditions and precipitation to usher in March.
From the NWS:
WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM SUNDAY TO 3 AM EST MONDAY…
THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW… SLEET… AND FREEZING RAIN… WHICH IS IN EFFECT FROM 7 AM SUNDAY TO 3 AM EST MONDAY.
LOCATIONS… WASHINGTON METROPOLITAN AREA AND SOUTHERN MARYLAND.
HAZARD TYPES… SNOW… SLEET… AND FREEZING RAIN.
ACCUMULATIONS… A COATING TO 1 INCH OF SNOW AND SLEET ACROSS WASHINGTON DC AND SOUTHERN MARYLAND. 1 TO 3 INCHES IN THE NORTHERN AND WESTERN SUBURBS OF WASHINGTON DC. ICE ACCUMULATION AROUND ONE TENTH OF AN INCH.
TIMING… SNOW WILL BEGIN BETWEEN 7 AM AND 10 AM SUNDAY MORNING. SNOW WILL CHANGE TO SLEET AND FREEZING RAIN BETWEEN NOON AND 3 PM SUNDAY AFTERNOON. PRECIPITATION WILL END AS FREEZING RAIN SUNDAY NIGHT.
IMPACTS… ROADS WILL BE SNOW AND ICE COVERED SUNDAY AND SUNDAY NIGHT. TRAVELLING WILL BE DANGEROUS DURING THIS TIME. VISIBILITY WILL BE REDUCED BELOW ONE-MILE AT TIMES IN SNOW SUNDAY MORNING AND AFTERNOON.
WINDS… SOUTH AROUND 5 TO 10 MPH.
TEMPERATURES… RISING THROUGH THE 20S MORNING. TEMPERATURES WILL RISE INTO THE LOWER AND MIDDLE 30S SUNDAY AFTERNOON INTO SUNDAY NIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS…A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW… SLEET… OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES… AND USE CAUTION WHILE DRIVING.
You know the drill.
The National Weather Service says snow is in the forecast for Reston. There is a Winter Weather Advisory for all of Northern Virginia from midnight tonight until noon Thursday.
It is not predicting a lot of snow — about 1 to 2 inches Wednesday into Thursday. However, it could be enough to stick to freezing roads and disrupt the school schedule and morning commute.
The NWS says snow is likely mainly after 3 a.m. with new snow accumulation of less than a half inch possible.
But it may continue snowing until noon, Thursday, with temperatures below freezing.
The Capital Weather Gang says snow totals for Thursday are difficult to predict as the D.C. area is on the Northern edge of a front that will bring 5 to 10 inches of snow to Richmond. As of 2 p.m. Wednesday, the Capital Weather Gang was predicting up to 3 inches for Reston.
Reston Now will keep you updated.
And note: Metrological spring begins on Sunday.
File photo by Annika Bohn
More winter weather is heading our way on Saturday.
The National Weather Service has issued a Winter Weather Advisory for Reston and the Metro D.C. area. Fairfax County Public Schools has canceled all Saturday activities on school grounds.
The NWS says there may be a mix of sleet, snow and freezing rain from 9 a.m. Saturday to 6 a.m. Sunday. That includes an accumulation of 1 to 3 inches of snow, as well as a coating of ice, says the NWS.
Snow is expected to start early Saturday afternoon into the evening, then mix with sleet before changing to freezing rain.
That forecast has caused FCPS — which had three snow days this week — to cancel activities. Among the cancelations:
- extracurricular activities
- interscholastic contests
- team practices
- field trips
- professional learning and training courses
- adult and community education classes
- recreation programs and community use by outside groups not affiliated with FCPS
- testing
The Fairfax County Park Authority says all FCPA-sponsored classes and events held in FCPS facilities are also canceled, but RECenters and other FCPA facilities will be open normal business hours.
A little snow on the ground. Kids out of Fairfax County Public Schools for the second day in a row. And now this: The National Weather Service is predicting an Arctic cold front (temps will feel below zero) and snow squalls later today.
Reston and the Metro D.C. area are under a Winter Weather Advisory from 2 to 9 p.m. Wednesday and a Wind Chill Advisory from midnight tonight to 6 p.m. Thursday.
From the NWS:
THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW… WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 9 PM EST THIS EVENING.
A WIND CHILL ADVISORY HAS ALSO BEEN ISSUED. THIS WIND CHILL ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST THURSDAY.
PRECIPITATION TYPE…SNOW SHOWERS AND SNOW SQUALLS.
ACCUMULATIONS…A COATING TO ONE INCH * TIMING…SNOW SHOWERS WILL DEVELOP THIS AFTERNOON. THE BEST CHANCE FOR THE HEAVIER SNOW SHOWERS AND SNOW SQUALLS WILL BE BETWEEN 4 AND 8 PM THIS AFTERNOON AND EVENING.
WIND CHILL…0 TO 10 DEGREES BELOW ZERO LATE TONIGHT THROUGH THURSDAY. * TEMPERATURES…HIGHS TODAY IN THE UPPER 20S TO AROUND 30 DEGREES. LOWS TONIGHT IN THE SINGLE DIGITS. HIGHS THURSDAY IN THE MID TO UPPER TEENS.
WINDS…WEST 15 TO 25 MPH WITH GUSTS AROUND 30 MPH.
IMPACTS…ROADS WILL BE SNOW COVERED AND SLIPPERY. VISIBILITY WILL BE LOCALLY REDUCED TO BELOW ONE-QUARTER MILE AT TIMES. THE COMBINATION OF SNOW COVERED ROADS AND SUDDEN REDUCTIONS IN VISIBILITY MAY CAUSE DANGEROUS TRAVELING CONDITIONS DURING THE EVENING RUSH.
THE COMBINATION OF GUSTY WINDS AND COLD TEMPERATURES TONIGHT THROUGH THURSDAY MAY RESULT IN DANGEROUS WIND CHILLS THAT CAN QUICKLY CAUSE HYPOTHERMIA AND FROST BITE.
Stay warm, Reston. What are the odds of having school on Thursday? Tell us in the comments.
Photo: Snow on Lake Anne/file photo
