NWS Issues Flood Watch
Update at 3:35 p.m. — Although the weather remains rainy and windy, the National Weather Service has canceled the flood watch.
A flood watch has been issued for Arlington and the surrounding areas in light of the heavy rains that are predicted for this afternoon.
The National Weather Service issued the watch, which begins at 3:00 p.m. and remains in effect through the evening.
* A PERIOD OF MODERATE TO LOCALLY HEAVY RAINFALL IS EXPECTED
TUESDAY AFTERNOON AND EVENING. RAINFALL TOTALS BETWEEN ONE AND
TWO INCHES ARE EXPECTED.* LOCALLY HEAVY RAINFALL MAY CAUSE SMALL STREAMS AND CREEKS TO
RISE OUT OF THEIR BANKS…OVERFLOWING LOW LYING AND URBAN
AREAS. DO NOT EVER DRIVE INTO FLOOD WATERS.PRECAUTIONARY/PREPAREDNESS ACTIONS…
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.YOU SHOULD 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.
Although the rains should stop by tonight, the effects could be felt for several days. The NWS has also issued a Hazardous Weather Outlook for the area.
.DAY ONE…TODAY AND TONIGHT
HEAVY RAIN THIS AFTERNOON AND EVENING HAS THE POTENTIAL TO CAUSE
FLOODING OF STREAMS AND LOW AREAS IN THE WASHINGTON AND BALTIMORE
METRO AREAS. A FLOOD WATCH HAS BEEN ISSUED FOR THESE AREAS.OVER THE WATERS…GUSTY WINDS ARE EXPECTED TODAY AND TONIGHT AND
A SMALL CRAFT ADVISORY HAS BEEN ISSUED.TIDES WILL BE HIGHER THAN NORMAL DUE TO ONSHORE WINDS. FOR THOSE
ALONG THE WESTERN SHORE OF THE MARYLAND CHESAPEAKE BAY AND THE
SHORELINE OF THE TIDAL POTOMAC RIVER…MINOR TIDAL FLOODING IS
POSSIBLE DURING THE TIMES OF HIGH TIDE BETWEEN THIS AFTERNOON AND
WEDNESDAY MORNING..DAYS TWO THROUGH SEVEN…WEDNESDAY THROUGH MONDAY
OVER THE WATERS…GUSTY WINDS MAY REMAIN STRONG ENOUGH TO NEED A
SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT.TIDES WILL BE HIGHER THAN NORMAL DUE TO ONSHORE WINDS. FOR THOSE
ALONG THE WESTERN SHORE OF THE MARYLAND CHESAPEAKE BAY AND THE
SHORELINE OF THE TIDAL POTOMAC RIVER…MINOR TIDAL FLOODING IS
POSSIBLE DURING THE TIMES OF HIGH TIDE WEDNESDAY MORNING.RAIN OR SNOW SHOWERS ARE POSSIBLE WEDNESDAY NIGHT AND THURSDAY.
NWS Issues Winter Weather Advisory
The National Weather Service has issued a Winter Weather Advisory for Arlington and the rest of the D.C. area. The advisory begins at midnight and runs through 9:00 a.m. on Thursday. Although the Capital Weather Gang points out that not much accumulation is expected, if any, temperatures in the 20s will create slick conditions when and if there is precipitation.
…WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST THURSDAY…THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS
ISSUED A WINTER WEATHER ADVISORY FOR SNOW… WHICH IS IN EFFECT
FROM MIDNIGHT TONIGHT TO 9 AM EST THURSDAY.* PRECIPITATION TYPE…SNOW
* ACCUMULATIONS…AROUND AN INCH.
* TIMING…OVERNIGHT INTO EARLY THURSDAY MORNING.
* TEMPERATURES…UPPER TEENS AND LOWER 20S.
* WINDS…NORTHEAST 5 TO 10 MPH OVERNIGHT BECOMING NORTH 10 TO 20
MPH THURSDAY MORNING.* IMPACTS…ANY UNTREATED SURFACES WILL BECOME SNOW COVERED AND
SLIPPERY. ANY SNOW COVERED SURFACES WILL REMAIN SLIPPERY THROUGH
THE MORNING RUSH.PRECAUTIONARY/PREPAREDNESS ACTIONS…
A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES…AND USE CAUTION WHILE DRIVING.
County Preps for Snow, NWS Issues Advisory
Update at 2:35 p.m. — The National Weather Service has discontinued its Winter Weather Advisory for Arlington the immediate D.C. metro area. Far suburbs remain under an advisory.
(Updated at 9:55 a.m.) Forecasters tweaked their predictions overnight for what intensity of storm they expect to hit the D.C. region today. While there’s still some uncertainty, it appears the impact will be less than originally anticipated.
The latest forecast from the Capital Weather Gang suggests the area could experience drizzle in the morning, changing to light snow in the afternoon, but with little accumulation. It’s expected that areas south of Arlington will get the heaviest snow, but that could change if the storm suddenly surges north.
According to Arlington County Department of Environmental Services spokeswoman Shannon Whalen McDaniel, crews began equipping vehicles with snow removal equipment yesterday. The preparations will continue today, and a crew will be on hand for snow removal this evening if necessary. Should conditions worsen later tonight, another crew will come in and work overnight into Friday morning.
The National Weather Service issued a Winter Weather Advisory this morning for much of the region, including Arlington. It runs today from 2:00-11:00 p.m. The Winter Storm Watch issued by the NWS yesterday has been canceled.
……WINTER WEATHER ADVISORY NOW IN EFFECT FROM 2 PM THIS AFTERNOON
TO 11 PM EST THIS EVENING…* PRECIPITATION TYPE…SNOW.
* ACCUMULATIONS…1 TO 3 INCHES. THE HIGHEST AMOUNTS WILL BE SOUTH
OF WASHINGTON DC.* TIMING…RAIN THIS MORNING WILL MIX WITH AND THEN CHANGE TO SNOW
DURING THE MID AFTERNOON. SNOW MAY BE LOCALLY HEAVY AT TIMES…
ESPECIALLY SOUTH OF WASHINGTON DC. SNOW WILL COME TO AN END
LATE THIS EVENING.* TEMPERATURES…FALLING TO THE MID 30S LATE THIS AFTERNOON.
* WINDS…NORTHWEST 5 TO 10 MPH.
* IMPACTS…ROADS MAY BECOME SNOW COVERED DURING THE EVENING RUSH
HOUR…ESPECIALLY SOUTH OF WASHINGTON DC.PRECAUTIONARY/PREPAREDNESS ACTIONS…
A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES…AND USE CAUTION WHILE
DRIVING.
Weather Cancels Rosslyn Outdoor Movie
Rosslyn’s Outdoor FilmFest movie, “Dave”, will be canceled tonight because of expected rain and thunderstorms throughout the evening.
Weather permitting, the screening of “Swing Vote” will still take place next Friday (July 27) as scheduled.
The region is still under a flash flood watch from the National Weather Service until 11:00 p.m.
WIDESPREAD RAINFALL RATES OF ONE TO TWO INCHES PER HOUR CAN BE
EXPECTED FROM AFTERNOON AND EVENING THUNDERSTORMS.EXCESSIVE RAINFALL COULD CAUSE CREEKS AND STREAMS TO RISE
QUICKLY OUT OF THEIR BANKS AND COULD FLOOD LOW-LYING AND URBAN
AREAS…PARTICULARLY THOSE THAT HAVE HAD RECENT SIGNIFICANT
RAINFALL.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.
Significant Delays reported at DCA
Weather and an equipment outage are both causing air traffic to back up at Reagan National Airport.
A foggy condition referred to as “low ceiling,” which causes decreased visibility, is apparently combining with at least some of the airport’s approach lights being out of service.
Currently, DCA lists “excessive delays” on its webpage. Average wait times are reportedly hovering around 45 minutes. That’s better than some of the multi-hour delays being experienced in other parts of the Northeast due to the low ceiling.
Be sure to check your flight status with your airline before heading to the airport, or check the FAA’s online flight delay information page.
