Alert archive / Maryland / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 352, NWS Baltimore/Washington

August 7, 20084 counties in Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 7, 2008, 5:13 PM EDT for 4 counties in Maryland. It was in force for 47 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 7, 2008, 5:13 PM EDT (21:13 UTC)
Expired
Aug 7, 2008, 6:00 PM EDT
In force
47 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon

Counties Anne Arundel County, MD, Calvert County, MD, Howard County, MD, Prince George's County, MD

The radar

The Sterling radar (KLWX), 67 km from the middle of the area, began a volume at 20:58 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.2 hours before the alert went out and 83 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, Phillips Aaf/Abe, MD at 12:00Z on 2008-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Phillips Aaf/Abe, MD at 12:00Z on 2008-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939587897Sfc1 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
7 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1654 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 12:07 PM EDTSevere Thunderstorm WarningLWXLoudoun38 min
Aug 7, 12:54 PM EDTSpecial Marine WarningLWX74 min
Aug 7, 12:58 PM EDTSpecial Marine WarningLWX77 min
Aug 7, 1:03 PM EDTSpecial Marine WarningLWX87 min
Aug 7, 2:24 PM EDTSpecial Marine WarningLWX66 min
Aug 7, 3:54 PM EDTSpecial Marine WarningLWX96 min
Aug 7, 5:09 PM EDTSpecial Marine WarningLWX81 min
Aug 7, 6:29 PM EDTSpecial Marine WarningLWX61 min
Aug 7, 1:12 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert, Prince George's33 min
Aug 7, 1:24 PM EDTSevere Thunderstorm WarningLWXMontgomery, Prince George's27 min
Aug 7, 1:49 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Prince George's37 min
Aug 7, 3:44 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery46 min
Aug 7, 4:27 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Howard, Montgomery, Prince George's48 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2008Every severe thunderstorm warning in 2008

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.