Alert archive / Maryland / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 95, NWS Baltimore/Washington

June 24, 2013Charles County, Prince George's County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 24, 2013, 4:27 PM EDT for Charles County, Prince George's County, Maryland. It was in force for 48 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 24, 2013, 4:27 PM EDT (20:27 UTC)
Expired: Jun 24, 2013, 5:15 PM EDT
In force: 48 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon

Counties Charles County, MD, Prince George's County, MD

The radar

The Sterling radar (KLWX), 60 km from the middle of the area, began a volume at 20:27 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 24, 2:44 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.5 hours before the alert went out and 116 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 705 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1279 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

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 24, 2:56 PM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, Jun 24, 2:56 PM EDT, 1 hour 31 minutes before

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Hazardous weather outlook, Jun 24, 3:07 PM EDT, 1 hour 20 minutes before

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In the hours before

Local storm report, Jun 24, 3:50 PM EDT, 37 minutes before

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Local storm report, Jun 24, 3:52 PM EDT, 35 minutes before

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Local storm report, Jun 24, 3:56 PM EDT, 31 minutes before

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Local storm report, Jun 24, 4:08 PM EDT, 19 minutes before

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Local storm report, Jun 24, 4:21 PM EDT, 6 minutes before

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Local storm report, Jun 24, 4:22 PM EDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 8:13 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, Rockingham	47 min
Jun 23, 8:29 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, Rockingham, City of Harrisonburg	46 min
Jun 24, 1:24 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, Rockingham, City of Harrisonburg	51 min
Jun 24, 3:06 PM EDT	Severe Thunderstorm Warning	LWX	Loudoun	39 min
Jun 24, 3:10 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Loudoun	50 min
Jun 24, 3:25 PM EDT	Severe Thunderstorm Warning	LWX	Clarke, Frederick, Loudoun	50 min
Jun 24, 3:40 PM EDT	Special Marine Warning	LWX		2 hr
Jun 24, 3:51 PM EDT	Severe Thunderstorm Warning	LWX	Loudoun	39 min
Jun 24, 4:06 PM EDT	Severe Thunderstorm Warning	LWX	Prince William, Stafford	39 min
Jun 24, 4:57 PM EDT	Special Marine Warning	LWX		2 hr
Jun 24, 5:24 PM EDT	Special Marine Warning	LWX		2 hr
Jun 24, 5:55 PM EDT	Special Marine Warning	LWX		65 min
Jun 24, 6:01 PM EDT	Special Marine Warning	LWX		119 min
Jun 24, 12:54 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	51 min
Jun 24, 1:19 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	56 min
Jun 24, 6:08 PM EDT	Severe Thunderstorm Warning	LWX	Saint Mary's	37 min
Jun 23, 8:41 PM EDT	Severe Thunderstorm Warning	LWX	Pendleton	49 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2013 Every severe thunderstorm warning in 2013

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.