Alert archive / Maryland / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 23, NWS Baltimore/Washington

May 10, 2000Anne Arundel County, Prince George's County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at May 10, 2000, 11:05 AM EDT for Anne Arundel County, Prince George's County, Maryland. It was in force for 55 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 10, 2000, 11:05 AM EDT (15:05 UTC)
Expired: May 10, 2000, 12:00 PM EDT
In force: 55 min
Issued by: NWS Baltimore/Washington
Area: Whole counties; the outline is the Mesonet’s reconstruction

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

The radar

The Sterling radar (KLWX), 68 km from the middle of the area, began a volume at 15:07 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.

What was reported inside it

Time	Report	Where	Remark
May 10, 11:25 AM EDT	Thunderstorm Wind	Annapolis, MD	Trees and power lines were downed.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 3.1 hours before the alert went out and 60 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: 825 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 1518 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 May 10, 10:10 AM EDT, 55 minutes earlier.

Area forecast discussion, May 10, 10:10 AM EDT, 55 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
May 10, 1:09 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	51 min
May 10, 1:56 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	49 min
May 10, 1:56 PM EDT	Severe Thunderstorm Warning	LWX	City of Winchester	49 min
May 10, 3:12 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, City of Winchester	48 min
May 10, 3:35 PM EDT	Severe Thunderstorm Warning	LWX	Clarke	40 min
May 10, 3:37 PM EDT	Severe Thunderstorm Warning	LWX	Warren	53 min
May 10, 4:00 PM EDT	Severe Thunderstorm Warning	LWX	Loudoun	45 min
May 10, 4:15 PM EDT	Severe Thunderstorm Warning	LWX	Fauquier, Prince William	45 min
May 10, 4:53 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Madison, Orange	52 min
May 10, 4:58 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Prince William, City of Fairfax, City of Falls Church	47 min
May 10, 4:58 PM EDT	Severe Thunderstorm Warning	LWX	City of Manassas, City of Manassas Park	47 min
May 10, 5:15 PM EDT	Severe Thunderstorm Warning	LWX	Fauquier, Stafford	45 min
May 10, 5:35 PM EDT	Severe Thunderstorm Warning	LWX	Spotsylvania	40 min
May 10, 5:43 PM EDT	Severe Thunderstorm Warning	LWX	Arlington, Fairfax, Prince William, City of Alexandria	47 min
May 10, 6:22 PM EDT	Severe Thunderstorm Warning	LWX	King George	38 min
May 10, 2:40 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	50 min
May 10, 3:20 PM EDT	Severe Thunderstorm Warning	LWX	Carroll	40 min
May 10, 3:54 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll	51 min
May 10, 4:11 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	49 min
May 10, 4:31 PM EDT	Severe Thunderstorm Warning	LWX	Howard	44 min
May 10, 4:43 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Howard, Montgomery	47 min
May 10, 4:43 PM EDT	Severe Thunderstorm Warning	LWX	City of Baltimore	47 min
May 10, 5:06 PM EDT	Tornado Warning	LWX	Baltimore	24 min
May 10, 5:59 PM EDT	Severe Thunderstorm Warning	LWX	Prince George's	46 min
May 10, 6:11 PM EDT	Severe Thunderstorm Warning	LWX	Charles	49 min
May 10, 6:33 PM EDT	Severe Thunderstorm Warning	LWX	Calvert	42 min
May 10, 6:51 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Saint Mary's	39 min
May 10, 3:02 PM EDT	Severe Thunderstorm Warning	LWX	Berkeley, Jefferson	43 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.