Alert archive / Maryland / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 201, NWS Wakefield, VA

August 4, 2019Worcester County, Maryland

NWS Wakefield, VA issued this severe thunderstorm warning at Aug 4, 2019, 3:16 PM EDT for Worcester County, Maryland. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 4, 2019, 3:16 PM EDT (19:16 UTC)
Expired
Aug 4, 2019, 4:00 PM EDT
In force
44 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Worcester County, MD

The radar

The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 19:19 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.3 hours before the alert went out and 33 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.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2019-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 945 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2019-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
945 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
858 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 4, 1:03 PM EDTSpecial Marine WarningAKQ87 min
Aug 4, 1:33 PM EDTSpecial Weather StatementAKQNottoway42 min
Aug 4, 1:43 PM EDTSpecial Weather StatementAKQCharles City, Henrico, New Kent, City of Colonial Heights, City of Hopewell47 min
Aug 4, 2:22 PM EDTSpecial Weather StatementAKQPrince George, City of Colonial Heights, City of Hopewell, City of Petersburg38 min
Aug 4, 2:47 PM EDTAreal Flood AdvisoryAKQChesterfield, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg118 min
Aug 4, 2:55 PM EDTSpecial Weather StatementAKQSussex35 min
Aug 4, 3:04 PM EDTSpecial Weather StatementAKQSurry, York, City of Newport News, City of Poquoson, City of Williamsburg41 min
Aug 4, 3:05 PM EDTSpecial Weather StatementAKQCity of Hopewell25 min
Aug 4, 3:30 PM EDTSpecial Marine WarningAKQ45 min
Aug 4, 3:31 PM EDTSpecial Weather StatementAKQGreensville, Isle of Wight, Southampton, Sussex, City of Emporia, City of Franklin44 min
Aug 4, 3:34 PM EDTSpecial Marine WarningAKQ56 min
Aug 4, 3:44 PM EDTSpecial Weather StatementAKQIsle of Wight, York, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 1 more46 min
Aug 4, 3:50 PM EDTSpecial Marine WarningAKQ55 min
Aug 4, 4:15 PM EDTSpecial Weather StatementAKQGreensville, Southampton, City of Emporia, City of Franklin, City of Suffolk45 min
Aug 4, 4:28 PM EDTSpecial Marine WarningAKQ62 min
Aug 4, 4:30 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 3 more45 min
Aug 4, 4:32 PM EDTAreal Flood AdvisoryAKQYork, City of Hampton, City of Newport News, City of Poquoson118 min
Aug 4, 4:42 PM EDTSpecial Marine WarningAKQ78 min
Aug 4, 4:58 PM EDTSpecial Weather StatementAKQCity of Chesapeake, City of Virginia Beach47 min
Aug 4, 5:01 PM EDTAreal Flood AdvisoryAKQCity of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach3 hr
Aug 4, 5:04 PM EDTSevere Thunderstorm WarningAKQCity of Chesapeake, City of Virginia Beach41 min
Aug 4, 5:15 PM EDTSpecial Marine WarningAKQ75 min
Aug 4, 5:31 PM EDTSpecial Weather StatementAKQAccomack29 min
Aug 4, 5:44 PM EDTSevere Thunderstorm WarningAKQCity of Virginia Beach46 min
Aug 4, 5:49 PM EDTSpecial Weather StatementAKQCity of Chesapeake41 min
Aug 4, 5:50 PM EDTSpecial Weather StatementAKQMecklenburg25 min
Aug 4, 6:25 PM EDTSpecial Marine WarningAKQ62 min
Aug 4, 7:37 PM EDTSpecial Weather StatementAKQHanover, City of Richmond23 min
Aug 4, 6:30 PM EDTSpecial Weather StatementAKQBertie, Camden, Chowan, Currituck, Gates, Hertford and 2 more45 min
Aug 4, 7:00 PM EDTSpecial Weather StatementAKQChowan30 min
Aug 4, 7:17 PM EDTSpecial Weather StatementAKQBertie, Chowan, Pasquotank, Perquimans43 min
Aug 4, 7:46 PM EDTAreal Flood AdvisoryAKQChowan, Pasquotank, Perquimans3 hr
Aug 4, 12:27 PM EDTSpecial Weather StatementAKQWorcester48 min
Aug 4, 1:09 PM EDTSpecial Weather StatementAKQWorcester51 min
Aug 4, 2:02 PM EDTSpecial Weather StatementAKQWorcester43 min
Aug 4, 2:10 PM EDTAreal Flood AdvisoryAKQWorcester2 hr
Aug 4, 3:11 PM EDTSpecial Weather StatementAKQWorcester49 min
Aug 4, 3:15 PM EDTAreal Flood AdvisoryAKQWicomico, Worcester2 hr

Nearby

Severe Thunderstorm Warnings in Maryland, 2019Every severe thunderstorm warning in 2019

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.