Arlington County and much of the surrounding D.C. region is under a Freeze Warning.
The warning means that temperatures overnight may dip below freezing and kill unprotected plants. In other words: go get your garden covered now. Plus, the water line to your garden hose is also in danger of freezing.
More from the National Weather Service:
…FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY… * WHAT…SUB-FREEZING TEMPERATURES NEAR 30 EXPECTED. * WHERE…PORTIONS OF THE DISTRICT OF COLUMBIA, CENTRAL, NORTHERN AND SOUTHERN MARYLAND AND CENTRAL AND NORTHERN VIRGINIA. * WHEN…FROM 2 AM TO 8 AM EDT WEDNESDAY. * IMPACTS…FROST AND FREEZE CONDITIONS WILL KILL CROPS, OTHER SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR PLUMBING. PRECAUTIONARY/PREPAREDNESS ACTIONS… TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD. TO PREVENT FREEZING AND POSSIBLE BURSTING OF OUTDOOR WATER PIPES THEY SHOULD BE WRAPPED, DRAINED, OR ALLOWED TO DRIP SLOWLY. THOSE THAT HAVE IN-GROUND SPRINKLER SYSTEMS SHOULD DRAIN THEM AND COVER ABOVE- GROUND PIPES TO PROTECT THEM FROM FREEZING. &&
Later this afternoon, storms and damaging winds are possible in the area as the cold front moves in.
A cold front will pass through our region late this morning and into this afternoon. The storm prediction center has expanded their slight risk for damaging winds to include most areas east of the Blue Ridge. pic.twitter.com/6KT82HisDE
— National Weather Service Baltimore-Washington (@NWS_BaltWash) April 21, 2020