Alert archive / Maryland / Flash Flood Warnings in 2023

Flash Flood Warning 47, NWS Wakefield, VA

July 25, 2023Somerset County, Maryland

NWS Wakefield, VA issued this flash flood warning at Jul 25, 2023, 9:28 PM EDT for Somerset County, Maryland. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 25, 2023, 9:28 PM EDT (01:28 UTC)
Expired
Jul 26, 2023, 12:30 AM EDT
In force
3 hr
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Flood severity
None

County Somerset County, MD

The radar

The Dover AFB radar (KDOX), 90 km from the middle of the area, began a volume at 01:28 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 00:00Z, 1.5 hours before the alert went out and 166 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, Washington/Dulle, VA at 00:00Z on 2023-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 802 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, Washington/Dulle, VA at 00:00Z on 2023-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 square meters per square second.19395878Sfc1 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
802 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
1376 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 8:28 PM EDTSpecial Marine WarningAKQ62 min
Jul 25, 8:53 PM EDTSevere Thunderstorm WarningAKQAccomack, Northampton52 min
Jul 25, 9:10 PM EDTSpecial Weather StatementAKQCaroline50 min
Jul 25, 9:21 PM EDTSpecial Marine WarningAKQ54 min
Jul 25, 9:42 PM EDTSpecial Weather StatementAKQWestmoreland48 min
Jul 25, 9:51 PM EDTSpecial Marine WarningAKQ54 min
Jul 25, 9:57 PM EDTSevere Thunderstorm WarningAKQEssex, Northumberland, Richmond, Westmoreland28 min
Jul 25, 10:13 PM EDTSpecial Weather StatementAKQNorthampton62 min
Jul 25, 10:16 PM EDTSpecial Marine WarningAKQ78 min
Jul 25, 10:27 PM EDTSpecial Weather StatementAKQFluvanna48 min
Jul 25, 10:33 PM EDTSpecial Weather StatementAKQNorthumberland, Richmond42 min
Jul 25, 10:49 PM EDTSpecial Marine WarningAKQ56 min
Jul 25, 11:00 PM EDTAreal Flood AdvisoryAKQFluvanna91 min
Jul 25, 11:15 PM EDTSpecial Weather StatementAKQKing and Queen45 min
Jul 25, 11:56 PM EDTAreal Flood AdvisoryAKQEssex, King and Queen, Middlesex2 hr
Jul 26, 12:06 AM EDTSpecial Weather StatementAKQIsle of Wight24 min
Jul 26, 12:57 AM EDTSpecial Marine WarningAKQ63 min
Jul 26, 2:11 AM EDTAreal Flood AdvisoryAKQCity of Hampton, City of Newport News2 hr
Jul 26, 3:34 AM EDTSmall Craft AdvisoryAKQ39 hr
Jul 26, 3:50 AM EDTSpecial Marine WarningAKQ41 min
Jul 26, 2:00 PM EDTSpecial Weather StatementAKQCity of Virginia Beach45 min
Jul 26, 2:49 PM EDTExcessive Heat WatchAKQCaroline, Charles City, Chesterfield, Dinwiddie, Essex, Gloucester and 28 more23 hr
Jul 26, 2:49 PM EDTHeat AdvisoryAKQAccomack, Amelia, Brunswick, Caroline, Charles City, Chesterfield and 43 more3 days
Jul 26, 3:35 PM EDTSpecial Weather StatementAKQCity of Suffolk25 min
Jul 26, 7:53 PM EDTSpecial Marine WarningAKQ52 min
Jul 26, 7:53 PM EDTSpecial Weather StatementAKQCity of Norfolk37 min
Jul 25, 9:54 PM EDTSpecial Weather StatementAKQSomerset51 min

Nearby

Flash Flood Warnings in Maryland, 2023Every flash flood warning in 2023

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.