The National Weather Service has issued a Hazardous Weather Outlook for Wednesday and Thursday because of showers and thunderstorms that could produce high winds, flash flooding and other severe effects.
Some are sounding the derecho alarm to describe what’s possible for this batch of storms, though many forecasters say the risk of that is low in the D.C. area. What could strengthen the storm system is a cold front rare for mid-June.
Forecasts show storms rolling into the area this evening and last into early Thursday morning. Here’s the announcement from NWS:
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE CHESAPEAKE BAY…TIDAL POTOMAC RIVER…AND ADJACENT COUNTIES IN CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF COLUMBIA.
.DAY ONE…TODAY AND TONIGHT
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP DURING THE AFTERNOON AND TONIGHT. SOME OF THESE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND LARGE HAIL. LOCALIZED FLASH FLOODING IS ALSO POSSIBLE.
.DAYS TWO THROUGH SEVEN…THURSDAY THROUGH TUESDAY
THUNDERSTORMS ARE EXPECTED THURSDAY. THERE IS THE POTENTIAL FOR A SIGNIFICANT SEVERE WEATHER EVENT…WITH THUNDERSTORMS PRODUCING DAMAGING WINDS…LARGE HAIL AND TORNADOES.
IN ADDITION…HEAVY RAINFALL MAY LEAD TO FLASH FLOODING IN SOME AREAS ON THURSDAY.
STRONG WIND GUSTS OF 40 TO 50 MPH MAY BE POSSIBLE BEHIND A COLD FRONT THURSDAY NIGHT.
A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE TIDAL POTOMAC RIVER AND MARYLAND CHESAPEAKE BAY THURSDAY AFTERNOON. A GALE WARNING MAY BE NECESSARY THURSDAY NIGHT…WITH SMALL CRAFT ADVISORY CONDITIONS LIKELY CONTINUING INTO FRIDAY.
SPOTTER INFORMATION STATEMENT…
SPOTTER ACTIVATION COULD BE NECESSARY THIS AFTERNOON AND TONIGHT…AND WILL ALSO LIKELY BE NEEDED ON THURSDAY.