Alert archive / Maryland / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 39, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Apr 28, 2008, 2:49 PM EDT for Anne Arundel County, Maryland. It was in force for 30 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
- Apr 28, 2008, 2:49 PM EDT (18:49 UTC)
- Expired
- Apr 28, 2008, 3:19 PM EDT
- In force
- 30 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
County Anne Arundel County, MD
The radar
The Sterling radar (KLWX), 79 km from the middle of the area, began a volume at 18:52 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, 6.8 hours before the alert went out and 72 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
- 502 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 306 m²/s²
- 0-3 km storm-relative helicity
- 339 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Apr 27, 2:55 PM EDT, 23 hours 54 minutes earlier.
Area forecast discussion, Apr 27, 2:55 PM EDT, 23 hours 54 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 |
|---|---|---|---|---|
| Apr 28, 1:53 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Apr 28, 2:24 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Apr 28, 3:26 PM EDT | Special Marine Warning | LWX | 49 min | |
| Apr 28, 4:30 PM EDT | Special Marine Warning | LWX | 90 min | |
| Apr 28, 2:27 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 36 min |
| Apr 28, 2:55 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 27 min |
| Apr 28, 4:03 PM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 4 hr |
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.