Alert archive / Maryland / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 239, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 28, 2008, 7:31 PM EDT for Frederick County, Washington County, Maryland; Berkeley County, West Virginia. It was in force for 58 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
- Jun 28, 2008, 7:31 PM EDT (23:31 UTC)
- Expired
- Jun 28, 2008, 8:29 PM EDT
- In force
- 58 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
Counties Frederick County, MD, Washington County, MD, Berkeley County, WV
The radar
The Sterling radar (KLWX), 64 km from the middle of the area, began a volume at 23:30 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 28, 6:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 11.5 hours before the alert went out and 224 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
- 173 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 713 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.7
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 28, 7:07 PM EDT, 24 minutes earlier.
Area forecast discussion, Jun 28, 7:07 PM EDT, 24 minutes before
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</html>Hazardous weather outlook, Jun 28, 7:02 PM EDT, 29 minutes before
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Special weather statement, Jun 28, 5:59 PM EDT, 1 hour 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 559 PM EDT SAT JUN 28 2008 WVZ050-055-504-282300- HARDY WV-HAMPSHIRE WV-EASTERN MINERAL WV- 559 PM EDT SAT JUN 28 2008 ...STRONG THUNDERSTORMS TO AFFECT HARDY...HAMPSHIRE AND EASTERN MINERAL COUNTIES... AT 559 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM WAPOCOMO TO 3 MILES SOUTH OF MCNEILL...MOVING EAST AT 36 MPH. THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH. THE COMMUNITIES OF SHANKS...THREE CHURCHES...BEAN SETTLEMENT... HIGGINSVILLE...KIRBY...INKERMAN...FRENCHBURG...AUGUSTA...SLANESVILLE AND RIO WILL BE AFFECTED BY THESE STORMS. GMS
Special weather statement, Jun 28, 6:26 PM EDT, 1 hour 5 minutes before
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</html>Local storm report, Jun 28, 6:59 PM EDT, 32 minutes before
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</html>Special weather statement, Jun 28, 7:02 PM EDT, 29 minutes before
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</html>Local storm report, Jun 28, 7:27 PM EDT, 4 minutes before
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</html>Local storm report, Jun 28, 7:28 PM EDT, 3 minutes before
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</html>The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 6:31 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah | 59 min |
| Jun 28, 7:12 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, Loudoun, City of Winchester | 63 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2008Severe Thunderstorm Warnings in West Virginia, 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.