Alert archive / Virginia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 73, NWS Baltimore/Washington

June 13, 2013Albemarle County, Augusta County, Nelson County, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 13, 2013, 12:49 PM EDT for Albemarle County, Augusta County, Nelson County, Virginia. It was in force for 56 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 13, 2013, 12:49 PM EDT (16:49 UTC)
Expired: Jun 13, 2013, 1:45 PM EDT
In force: 56 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon

Counties Albemarle County, VA, Augusta County, VA, Nelson County, VA

The radar

The Sterling radar (KLWX), 162 km from the middle of the area, began a volume at 16:52 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 13, 12:19 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 4.8 hours before the alert went out and 105 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: 1563 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 708 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.4

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 13, 10:51 AM EDT, 1 hour 58 minutes earlier.

Area forecast discussion, Jun 13, 10:51 AM EDT, 1 hour 58 minutes before

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Hazardous weather outlook, Jun 13, 10:32 AM EDT, 2 hours 17 minutes before

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In the hours before

Local storm report, Jun 13, 9:52 AM EDT, 2 hours 57 minutes before

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Local storm report, Jun 13, 9:54 AM EDT, 2 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
954 AM EDT THU JUN 13 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0943 AM     WATER SPOUT      2 E MAYO                38.89N  76.46W
06/13/2013                   ANZ532             MD   PUBLIC

&&

CORRECTED EVENT TIME

EVENT NUMBER LWX1300294

STRONG

Local storm report, Jun 13, 9:55 AM EDT, 2 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
955 AM EDT THU JUN 13 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0943 AM     WATER SPOUT      3 ENE BAY RIDGE         38.96N  76.41W
06/13/2013                   ANZ532             MD   PUBLIC

&&

CORRECTED LOCATION

EVENT NUMBER LWX1300294

STRONG

Local storm report, Jun 13, 9:56 AM EDT, 2 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
956 AM EDT THU JUN 13 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0855 AM     TSTM WND DMG     1 ESE HICKORY           39.57N  76.32W
06/13/2013                   HARFORD            MD   EMERGENCY MNGR

            TREES REPORTED DOWN

&&

EVENT NUMBER LWX1300296

MEADOWS

Local storm report, Jun 13, 10:18 AM EDT, 2 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1018 AM EDT THU JUN 13 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0921 AM     FLASH FLOOD      3 SSE BUTLER            39.50N  76.71W
06/13/2013                   BALTIMORE          MD   PUBLIC

            FALLS ROAD FLOODED JUST SOUTH OF SHAWAN ROAD NEAR
            OREGON BRANCH.

&&

EVENT NUMBER LWX1300297

JE

Local storm report, Jun 13, 10:41 AM EDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1041 AM EDT THU JUN 13 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0842 AM     TSTM WND DMG     2 NNW GLYNDON           39.50N  76.83W
06/13/2013                   BALTIMORE          MD   NWS EMPLOYEE

            LARGE TREE LIMB SIX INCH DIAMETER DOWN

&&

EVENT NUMBER LWX1300298

SMZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 12:17 AM EDT	Special Marine Warning	LWX		118 min
Jun 13, 1:50 AM EDT	Special Marine Warning	LWX		40 min
Jun 13, 6:53 AM EDT	Severe Thunderstorm Warning	LWX	Clarke, Frederick, City of Winchester	52 min
Jun 13, 7:28 AM EDT	Severe Thunderstorm Warning	LWX	Page, Rockingham, Shenandoah, Warren, City of Harrisonburg	47 min
Jun 13, 7:52 AM EDT	Severe Thunderstorm Warning	LWX	Clarke, Fauquier, Frederick, Loudoun, Shenandoah, Warren and 1 more	38 min
Jun 13, 8:06 AM EDT	Special Marine Warning	LWX		84 min
Jun 13, 8:11 AM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Madison, Page, Rappahannock, Rockingham and 2 more	49 min
Jun 13, 8:47 AM EDT	Special Marine Warning	LWX		88 min
Jun 13, 9:09 AM EDT	Special Marine Warning	LWX		66 min
Jun 13, 9:16 AM EDT	Gale Warning	LWX		21 hr
Jun 13, 9:31 AM EDT	Special Marine Warning	LWX		89 min
Jun 13, 9:39 AM EDT	Special Marine Warning	LWX		51 min
Jun 13, 1:07 PM EDT	Severe Thunderstorm Warning	LWX	Rockingham	68 min
Jun 13, 1:27 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, City of Charlottesville	48 min
Jun 13, 1:41 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, Nelson	49 min
Jun 13, 1:45 PM EDT	Flash Flood Warning	LWX	Albemarle, Nelson	4 hr
Jun 13, 1:55 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, Frederick, Highland, Page, Rockingham, Shenandoah and 3 more	80 min
Jun 13, 2:00 PM EDT	Severe Thunderstorm Warning	LWX	Spotsylvania, Stafford, City of Fredericksburg	45 min
Jun 13, 2:13 PM EDT	Severe Thunderstorm Warning	LWX	Orange, Spotsylvania	47 min
Jun 13, 2:19 PM EDT	Special Marine Warning	LWX		56 min
Jun 13, 2:24 PM EDT	Tornado Warning	LWX	Culpeper, Spotsylvania, Stafford, City of Fredericksburg	36 min
Jun 13, 2:41 PM EDT	Flash Flood Warning	LWX	Spotsylvania, Stafford, City of Fredericksburg	3 hr
Jun 13, 2:50 PM EDT	Special Marine Warning	LWX		85 min
Jun 13, 2:56 PM EDT	Severe Thunderstorm Warning	LWX	Clarke, Fauquier, Loudoun, Prince William, Warren	49 min
Jun 13, 3:01 PM EDT	Tornado Warning	LWX	King George	29 min
Jun 13, 3:16 PM EDT	Flash Flood Warning	LWX	Clarke, Loudoun	3 hr
Jun 13, 3:17 PM EDT	Special Marine Warning	LWX		88 min
Jun 13, 3:23 PM EDT	Tornado Warning	LWX	Fairfax, Loudoun	37 min
Jun 13, 3:29 PM EDT	Severe Thunderstorm Warning	LWX	Arlington, Fairfax, Loudoun, City of Alexandria, City of Fairfax, City of Falls Church	61 min
Jun 13, 3:39 PM EDT	Special Marine Warning	LWX		66 min
Jun 13, 4:03 PM EDT	Special Marine Warning	LWX		87 min
Jun 13, 4:07 PM EDT	Special Marine Warning	LWX		2 hr
Jun 13, 4:17 PM EDT	Special Marine Warning	LWX		88 min
Jun 13, 5:50 PM EDT	Areal Flood Warning	LWX	Loudoun	4 hr
Jun 13, 12:14 AM EDT	Severe Thunderstorm Warning	LWX	Calvert, Charles, Prince George's, Saint Mary's	31 min
Jun 13, 6:26 AM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	49 min
Jun 13, 7:26 AM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Washington	49 min
Jun 13, 8:07 AM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, Frederick, Harford	38 min
Jun 13, 8:31 AM EDT	Flash Flood Warning	LWX	Baltimore, Carroll, Harford	3 hr
Jun 13, 8:40 AM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	65 min
Jun 13, 9:03 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Harford, Howard, City of Baltimore	42 min
Jun 13, 9:26 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Prince George's	49 min
Jun 13, 3:17 PM EDT	Tornado Warning	LWX	Calvert, Charles, Saint Mary's	28 min
Jun 13, 3:33 PM EDT	Tornado Warning	LWX	Calvert, Saint Mary's	27 min
Jun 13, 3:45 PM EDT	Tornado Warning	LWX	Howard, Montgomery	30 min
Jun 13, 3:53 PM EDT	Flash Flood Warning	LWX	Montgomery	3 hr
Jun 13, 3:58 PM EDT	Tornado Warning	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's	32 min
Jun 13, 4:06 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Howard, Prince George's, City of Baltimore	54 min
Jun 13, 4:08 PM EDT	Tornado Warning	LWX	Anne Arundel, Prince George's	37 min
Jun 13, 4:22 PM EDT	Flash Flood Warning	LWX	Anne Arundel, Baltimore, Howard, City of Baltimore	3 hr
Jun 13, 2:04 PM EDT	Areal Flood Warning	LWX	Grant, Hardy	6 hr

Nearby

Severe Thunderstorm Warnings in Virginia, 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.