Alert archive / Virginia / Wind Advisories in 2021
Wind Advisory 4, NWS Baltimore/Washington
NWS Baltimore/Washington issued this wind advisory at Mar 18, 2021, 2:32 PM EDT for Calvert County, Saint Mary's County, Maryland; 11 counties in Virginia. It took effect at Mar 19, 2021, 12:00 AM EDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Mar 18, 2021, 2:32 PM EDT (18:32 UTC)
- In effect from
- Mar 19, 2021, 12:00 AM EDT
- Expired
- Mar 19, 2021, 11:00 AM EDT
- In force
- 11 hr
- Issued by
- NWS Baltimore/Washington
Counties Calvert County, MD, Saint Mary's County, MD, Albemarle County, VA, Amherst County, VA, Augusta County, VA, Greene County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Warren County, VA
The radar
The Sterling radar (KLWX), 109 km from the middle of the area, began a volume at 18:33 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 6.5 hours before the alert went out and 112 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 321 m²/s²
- 0-3 km storm-relative helicity
- 425 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
530 WWUS71 KLWX 181832 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 232 PM EDT Thu Mar 18 2021 MDZ017-018-190245- /O.NEW.KLWX.WI.Y.0004.210319T0800Z-210319T1500Z/ St. Marys-Calvert- Including the cities of Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, and Prince Frederick 232 PM EDT Thu Mar 18 2021 ...WIND ADVISORY IN EFFECT FROM 4 AM TO 11 AM EDT FRIDAY... * WHAT...North winds 20 to 30 mph with gusts up to 50 mph. * WHERE...St. Marys and Calvert Counties. * WHEN...From 4 AM to 11 AM EDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down. A few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ DHOF
4 follow-up statements
506 WWUS71 KLWX 182355 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 755 PM EDT Thu Mar 18 2021 VAZ507-508-190800- /O.EXB.KLWX.WI.Y.0004.210319T0400Z-210319T1400Z/ Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Including the cities of Big Meadows and Wintergreen 755 PM EDT Thu Mar 18 2021 ...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT FRIDAY... * WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Northern Virginia Blue Ridge and Central Virginia Blue Ridge. * WHEN...From midnight tonight to 10 AM EDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MDZ017-018-190800- /O.CON.KLWX.WI.Y.0004.210319T0800Z-210319T1500Z/ St. Marys-Calvert- Including the cities of Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, and Prince Frederick 755 PM EDT Thu Mar 18 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 AM TO 11 AM EDT FRIDAY... * WHAT...North winds 20 to 30 mph with gusts up to 50 mph. * WHERE...St. Marys and Calvert Counties. * WHEN...From 4 AM to 11 AM EDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down. A few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
710 WWUS71 KLWX 190830 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 430 AM EDT Fri Mar 19 2021 MDZ017-018-191500- /O.CON.KLWX.WI.Y.0004.000000T0000Z-210319T1500Z/ St. Marys-Calvert- Including the cities of Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, and Prince Frederick 430 AM EDT Fri Mar 19 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... * WHAT...North winds 20 to 30 mph with gusts up to 45 mph. * WHERE...Calvert and St. Marys Counties. * WHEN...Until 11 AM EDT this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ VAZ507-508-191400- /O.CON.KLWX.WI.Y.0004.000000T0000Z-210319T1400Z/ Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Including the cities of Big Meadows and Wintergreen 430 AM EDT Fri Mar 19 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... * WHAT...North winds 20 to 25 mph with gusts up to 45 mph. * WHERE...Central Virginia Blue Ridge and Northern Virginia Blue Ridge. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
009 WWUS71 KLWX 191359 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 959 AM EDT Fri Mar 19 2021 VAZ507-508-191500- /O.EXP.KLWX.WI.Y.0004.000000T0000Z-210319T1400Z/ Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Including the cities of Big Meadows and Wintergreen 959 AM EDT Fri Mar 19 2021 ...WIND ADVISORY WILL EXPIRE AT 10 AM EDT THIS MORNING... Winds have decreased below Wind Advisory levels, but gusts of 30-40 mph will remain possible through the remainder of the morning and into the afternoon hours. $$ MDZ017-018-191500- /O.CON.KLWX.WI.Y.0004.000000T0000Z-210319T1500Z/ St. Marys-Calvert- Including the cities of Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, and Prince Frederick 959 AM EDT Fri Mar 19 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... * WHAT...North winds 20 to 25 mph with gusts up to 45 mph. * WHERE...Calvert and St. Marys Counties. * WHEN...Until 11 AM EDT this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
562 WWUS71 KLWX 191453 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1053 AM EDT Fri Mar 19 2021 MDZ017-018-191600- /O.EXP.KLWX.WI.Y.0004.000000T0000Z-210319T1500Z/ St. Marys-Calvert- Including the cities of Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, and Prince Frederick 1053 AM EDT Fri Mar 19 2021 ...WIND ADVISORY WILL EXPIRE AT 11 AM EDT THIS MORNING... Winds have dropped below Wind Advisory levels, but gusts of 30-40 mph out of the north will remain possible through the remainder of the morning and into the afternoon hours. $$
Nearby
Wind Advisories in Virginia, 2021Wind Advisories in Maryland, 2021Every wind advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.