Archive: Alerts
Alert: Watch, Warnings Issued as Storms Move In
UPDATE: Severe Thunderstorm Warnings in effect for St. Mary's and Calvert Counties until 11:45 a.m., and for Talbot County until 12:15 p.m. Severe Thunderstorm Watch in effect until 4 p.m. for Fairfax and Montgomery Counties, the District, and points east. Strong storms are moving into the immediate metro area. Heavy...
By Capital Weather Gang | July 22, 2008; 10:02 AM ET | Comments (15)
Alert: Severe Thunderstorm Watch Until 2 A.M.
12:30 a.m. update: The Severe Thunderstorm Watch has been extended until 2 a.m. While no warnings are currently in effect, one thunderstorm is impacting northwest Montgomery County and another storm (in Culpeper and Rappahannock County) now heading into Fauquier County could affect the immediate metro area between 1:00 and 2:00...
By Capital Weather Gang | June 30, 2008; 12:30 AM ET | Comments (32)
Alert: Severe Thunderstorm Watch Until 8 P.M.
As temperatures climb through the low 90s this early afternoon, and the heat index into the mid 90s, the National Weather Service has issued a Severe Thunderstorm Watch for the metro area, in effect until 8 p.m. NWS says: HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND...
By Capital Weather Gang | June 27, 2008; 01:00 PM ET | Comments (23)
Alert: Severe Thunderstorm Watch Issued
4:30 p.m. update: Lines of storms have developed to the west and southwest. These may affect the metro area, especially after about 5:30 p.m. The Storm Prediction Center (SPC) has issued a Severe Thunderstorm Watch for the metro area until 8:00 p.m. tonight. According to SPC: HAIL TO 2 INCHES...
By Jason Samenow | June 22, 2008; 04:30 PM ET | Comments (16)
Alert: Severe Thunderstorm Watch Until 9 P.M.
Radar: Latest mid-Atlantic radar loop from the National Weather Service. Click here to expand. Refresh page to update. What is UTC? A Severe Thunderstorm Watch has been issued for the metro area, in effect until 9 p.m. The Storm Prediction Center says: HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND...
By Capital Weather Gang | June 16, 2008; 01:35 PM ET | Comments (2)
Alert: Another Round of Severe Storms
*Tornado Watch remains in effect until 1 a.m.* Another line of severe thunderstorms is approaching the metro area from the west. Tornado Warnings are in effect for the southern portion of these storms, including Prince William and Stafford counties in Virginia, and parts of Prince Georges, Charles and St Mary's...
By Jamie Jones | June 4, 2008; 07:54 PM ET | Comments (36)
Tornado Watch Issued; Storms Approach
ALERTS 2:15 PM: A line of thunderstorms with frequent lightning is moving into the far western suburbs, now approaching western Frederick, Loudoun and Fauquier counties. This batch will move through the metro area from west to east over the next couple hours. A Tornado Watch is in effect until 8...
By Capital Weather Gang | June 4, 2008; 12:50 PM ET | Comments (13)
Tornado Watch Issued; Storm Threat Until Evening
It may not rain everywhere, but some storms severe ALERTS 2:50 p.m.: Severe Thunderstorm Warning issued for much of the immediate metro area until 3:45 p.m. Heaviest storms in southern Fairfax County headed into southern Prince Georges and Charles counties. 2:30 p.m. Severe Thunderstorm Warning in effect for parts of...
By Dan Stillman | May 31, 2008; 10:30 AM ET | Comments (55)
Alert: Flood Watch for Sunday Night
The Watch is in effect from Sunday night to Monday afternoon. From the National Weather Service: THE HEAVIEST RAIN WILL OCCUR SUNDAY NIGHT ... AND END FROM SOUTHWEST TO NORTHEAST MONDAY AFTERNOON. TWO TO THREE INCHES OF RAIN WILL FALL ON TOP OF WET SOIL....
By Jason Samenow | May 10, 2008; 09:43 PM ET | Comments (6)
Alert: Heavy Rain, Storms Affecting Metro Area
*Flood Watch in effect for entire metro area through late tonight* Severe Weather Tracking StationWarning Text: DC | MD | VARadar: Latest D.C. area radar loop from the National Weather Service. Click here to expand. Refresh page to update. Warnings: Severe warnings from the National Weather Service. Automatically reloads every...
By Jason Samenow | April 20, 2008; 02:23 PM ET | Comments (26)
Alert: Winter Storm Warning Issued
Clear commute; deteriorating conditions overnight *Winter Storm Warning from 11 p.m. tonight to 10 p.m. Friday night* A STORM MOVING IN FROM THE SOUTHWEST WILL BRING PRECIPITATION INTO THE COLD AIR ALREADY IN PLACE OVER THE REGION. THE RESULT WILL BE LIGHT SNOW OVERNIGHT...FOLLOWED BY FREEZING RAIN FRIDAY INTO FRIDAY...
By Ian Livingston | February 21, 2008; 02:55 PM ET | Comments (95)
Alert: Winter Storm Watch Issued
A Winter Storm Watch has been issued for the entire metro area from Thursday evening through late Friday night. Excerpt: LOW PRESSURE ACROSS THE GULF OF MEXICO WILL BEGIN SPREAD SNOW ACROSS THE MID ATLANTIC REGION THURSDAY NIGHT. AS WARMER AIR ALOFT MOVES INTO THE AREA ON FRIDAY...SNOW IS EXPECTED...
By Jason Samenow | February 20, 2008; 10:23 PM ET | Comments (9)
Alert: Advisory Upgraded to Ice Storm Warning
Warning in effect area-wide until 7am Wednesday morning From the National Weather Service: "AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS WILL MAKE TRAVEL EXTREMELY DANGEROUS. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT ... FOOD ......
By Jason Samenow | February 12, 2008; 06:59 PM ET | Comments (77)
Alert: Potomac Primary Problematic Precipitation
As if tomorrow needed any more excitement, two periods of light wintry precipitation should make the election day even more interesting. Some light snow may break out pre-dawn, especially north and west of the beltway. Portions of Montgomery, Frederick and Loudoun counties could see a dusting or so by dawn....
By Jason Samenow | February 11, 2008; 10:00 PM ET | Comments (20)
Alert: New Record Highs
The warm before the storm? New high-temperature records have been set for the day at all three area airports. At 11 a.m., Regan National was reporting 71 degrees, which breaks the record of 69 set in 1938; Dulles was reporting 68 degrees, which breaks the record of 66 set in...
By Capital Weather Gang | February 6, 2008; 11:05 AM ET | Comments (10)
Alert: Unexpected Midday Showers
Precipitation mainly north and west of downtown Latest DC area radar loop, courtesy National Weather Service. Refresh page to update, or click here to expand. Despite some sun shining through in parts of the metro area, radar shows another batch of showers moving into the area as the lunch hour...
By Capital Weather Gang | January 29, 2008; 11:40 AM ET | Comments (12)
Alert: Rain Arrives Ahead of Schedule
Pockets of freezing rain to the north Latest DC area radar loop, courtesy National Weather Service. Refresh page to update, or click here to expand. A batch of steady rain has developed in the metro area this morning and will continue for the next several hours. In some spots, temperatures...
By Jason Samenow | January 29, 2008; 07:58 AM ET | Comments (4)
Alert: Wintry Weather Risk Fading
Latest DC area radar loop, courtesy National Weather Service. Refresh page to update, or click here to expand. The National Weather Service has cancelled the Winter Weather Advisory for the region as temperatures have now risen above freezing throughout. Radar currently shows a broken line of activity to the...
By Ian Livingston | January 22, 2008; 11:45 AM ET | Comments (17)
Alert: Winter Weather Advisory for Tuesday
The National Weather Service has issued a Winter Weather Advisory for the entire Metro Area for 10 a.m. to 4 p.m. on Tuesday: A COLD FRONT WILL APPROACH THE REGION TUESDAY AFTERNOON. IN ADVANCE OF THE FRONT...LIGHT SNOW AND SLEET WILL OVERSPREAD THE AREA TUESDAY MID-MORNING. SNOW WILL MIX FREEZING...
By Matt Ross | January 21, 2008; 03:21 PM ET | Comments (28)
Alert: Snow Showers or Flurries Likely
Dusting to an inch possible by midnight Latest Mid-Atlantic radar loop, courtesy National Weather Service. Refresh page to update, or click here to expand. The combination of moisture pluming up from the south and an approaching Arctic cold front is likely to produce some snow in the metro area through...
By Jason Samenow | January 19, 2008; 03:04 PM ET | Comments (44)
Alert: Accumulation Coming to an End
A basketball left on a playground in Northern Virginia from our last spell of warm weather is covered by 4 inches of snow. By Capital Weather Gang photographer Kevin Ambrose. Within the metro area, most areas have seen snow mix with or change to sleet during the early afternoon....
By Dan Stillman | January 17, 2008; 02:30 PM ET | Comments (80)
Alert: Snow Continues at Steady Clip
Slightly higher accumulations; sleet and rain to mix in An unofficial measurement of accumulated snow inside the Capital Beltway. Refresh page to update, or click here to enlarge. Moderate to sometimes heavy snow has been falling across much of the DC metro area since late morning, and precipitation should continue...
By Dan Stillman | January 17, 2008; 12:50 PM ET | Comments (68)
Alert: Here Comes the Snow
Latest MidAtlantic radar loop, courtesy National Weather Service. Refresh page to update, or click here to expand. Snow is currently spreading over the region as an area of low pressure destined to bring many their first accumulating snow of 2008 moves up the East Coast. Expect steady light to...
By Ian Livingston | January 17, 2008; 10:00 AM ET | Comments (219)
Alert: Snow Confidence Increasing
The latest data I'm analyzing has increased my confidence in the likelihood of accumulating snow tomorrow (65%). The storm radar appears impressive (notice the precipitation coverage to the southwest) and snow has been reported as far south as Atlanta. The details given in Steve's earlier post on timing and impact...
By Jason Samenow | January 16, 2008; 07:30 PM ET | Comments (77)
Alert: Winter Weather Advisory Tomorrow
The National Weather Service has issued a Winter Weather Advisory for the District and points north and west from 7 a.m. Thursday to midnight Thursday night. According to NWS ... PRECIPITATION IS EXPECTED TO BEGIN AS SNOW THURSDAY MORNING ACCUMULATING AROUND AN INCH AROUND THE INTERSTATE 95 CORRIDOR WITH AS...
By Dan Stillman | January 16, 2008; 03:10 PM ET | Comments (14)
Alert: Snow Flurries and Squalls Moving Through
Latest D.C metro area radar loop, courtesy AccuWeather. Reload to update, or click here to expand. A line of flurries and briefly intense snow squalls is now progressing into the western suburbs of DC. While short-lived, this line may produce a quick dusting to 1/2" of snow on grassy...
By Ian Livingston | January 15, 2008; 11:28 AM ET | Comments (38)
Alert: Sunday PM Storm Mainly Rain
The details for tomorrow's storm are finally crystallizing, but snow crystals aren't a big part of the equation, unless you happen to be a mile high in the atmosphere. Down at ground level, temperatures are going to be too warm for snow until the storm is pulling away and starting...
By Jason Samenow | January 12, 2008; 11:15 PM ET | Comments (16)
Alert: On the Edge of Sunday Night Storm
Probability of accumulating snow pretty low Indications are strong that a major storm will impact New Jersey to New England with some significant snows, especially the further north you go Sunday night. But once you get south of Jersey, precipitation amounts will likely decrease from northeast to southwest through the...
By Jason Samenow | January 12, 2008; 12:00 PM ET | Comments (27)
Alert: Sunday Night Storm Odds Increasing
New information I'm analyzing suggests an increased risk of significant precipitation starting Sunday afternoon and especially Sunday night. The exact location of rain/snow line -- likely to be somewhere between the Chesapeake Bay and mountains -- is so uncertain, that it's too early to confidently say whether the metro area...
By Jason Samenow | January 11, 2008; 10:50 PM ET | Comments (17)
Alert: Higher Sunday/Monday Storm Threat
Some new computer model guidance suggests that a coastal storm will track close enough to land to produce significant rain and/or snow over the metro area late Sunday into Monday. While details still remain foggy, we'll keep you updated as a clearer picture begins to emerge over the coming hours...
By Ian Livingston | January 10, 2008; 01:40 PM ET | Comments (16)
