Alert archive / West Virginia / Special Weather Statements in 2013

Special Weather Statement, NWS Baltimore/Washington

January 30, 2013Allegany County, Maryland; 5 counties in West Virginia

NWS Baltimore/Washington issued this special weather statement at Jan 30, 2013, 12:08 PM EST for Allegany County, Maryland; 5 counties in West Virginia. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 30, 2013, 12:08 PM EST (17:08 UTC)
Expired: Jan 30, 2013, 12:45 PM EST
In force: 37 min
Issued by: NWS Baltimore/Washington

Counties Allegany County, MD, Grant County, WV, Hampshire County, WV, Hardy County, WV, Mineral County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 112 km from the middle of the area, began a volume at 17:08 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, 5.1 hours before the alert went out and 120 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 543 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 293 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

323 
WWUS81 KLWX 301708
SPSLWX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1208 PM EST WED JAN 30 2013

MDZ003-501-502-WVZ050-051-055-501>504-301745-
WASHINGTON MD-MORGAN WV-HARDY WV-HAMPSHIRE WV-
EXTREME WESTERN ALLEGANY MD-CENTRAL AND EASTERN ALLEGANY MD-
WESTERN MINERAL WV-EASTERN MINERAL WV-WESTERN GRANT WV-
EASTERN GRANT WV-
1208 PM EST WED JAN 30 2013

...SHOWERS WITH GUSTY WIND TO AFFECT WESTERN MARYLAND AND THE 
POTOMAC HIGHLANDS OF WEST VIRGINIA...

AT 1208 PM EST...SHOWERS PRODUCING GUSTY WIND WERE LOCATED ALONG A
LINE EXTENDING FROM 3 MILES NORTHEAST OF ELLERSLIE TO 3 MILES WEST OF
REESES MILL TO 3 MILES SOUTHWEST OF STREBY...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE WILLIAMSPORT...FORT ASHBY...ROMNEY...
MOOREFIELD...MATHIAS...LARGENT...FISHERS BRIDGE...RIDGE AND ROCK GAP.

HEAVY RAIN WITH THESE SHOWERS WILL REDUCE VISIBILITIES TO BELOW ONE
MILE AND MAY CAUSE PONDING OF WATER ON ROADWAYS.

WIND GUSTS IN EXCESS OF 50 MPH ARE EXPECTED WITH THESE SHOWERS. WINDS
THIS STRONG CAN BRING DOWN LARGE TREE BRANCHES. TAKE SHELTER UNTIL
THE SHOWERS HAVE PASSED.

&&

LAT...LON 3972 7813 3945 7830 3944 7831 3946 7835
      3939 7835 3887 7886 3896 7935 3905 7931
      3909 7934 3941 7901 3973 7886
TIME...MOT...LOC 1708Z 266DEG 35KT 3976 7872 3942 7889
          3905 7925

$$


BJL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 30, 2:12 AM EST	Small Craft Advisory	LWX		22 hr
Jan 30, 4:07 AM EST	Flash Flood Watch	LWX	Arlington, Clarke, Fairfax, Frederick, Highland, Page and 10 more	21 hr
Jan 30, 4:42 AM EST	Coastal Flood Advisory	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	32 hr
Jan 30, 11:32 AM EST	Special Weather Statement	LWX	Highland	43 min
Jan 30, 12:16 PM EST	Special Weather Statement	LWX	Highland	29 min
Jan 30, 12:39 PM EST	Special Weather Statement	LWX	Frederick, Shenandoah	51 min
Jan 30, 1:14 PM EST	Special Weather Statement	LWX	Clarke, Frederick, Page, Shenandoah, Warren, City of Winchester	46 min
Jan 30, 1:49 PM EST	Special Weather Statement	LWX	Clarke, Loudoun, Warren	26 min
Jan 30, 2:15 PM EST	Special Weather Statement	LWX	Loudoun	45 min
Jan 30, 3:12 PM EST	River Flood Watch	LWX	Loudoun	18 hr
Jan 30, 5:07 PM EST	Special Weather Statement	LWX	Augusta, Nelson, City of Staunton, City of Waynesboro	33 min
Jan 30, 5:25 PM EST	Special Weather Statement	LWX	Loudoun	80 min
Jan 30, 5:39 PM EST	Flash Flood Warning	LWX	Clarke, Fauquier, Loudoun, Rappahannock, Warren	4 hr
Jan 30, 5:41 PM EST	Special Weather Statement	LWX	Albemarle, Greene, Madison, Nelson, Page, City of Charlottesville and 1 more	49 min
Jan 30, 5:56 PM EST	Severe Thunderstorm Warning	LWX	Albemarle, Greene, Nelson, Orange, City of Charlottesville	49 min
Jan 30, 6:21 PM EST	Severe Thunderstorm Warning	LWX	Albemarle, Culpeper, Fauquier, Greene, Madison, Orange and 2 more	39 min
Jan 30, 6:49 PM EST	Special Weather Statement	LWX	Albemarle, City of Charlottesville	26 min
Jan 30, 6:58 PM EST	Severe Thunderstorm Warning	LWX	Culpeper, Fairfax, Fauquier, Madison, Orange, Prince William and 5 more	47 min
Jan 30, 2:50 PM EST	Special Weather Statement	LWX	Baltimore, Carroll, Harford, Howard, Montgomery, City of Baltimore	40 min
Jan 30, 3:48 PM EST	Special Weather Statement	LWX	Harford, City of Baltimore	42 min
Jan 30, 6:26 PM EST	Flash Flood Warning	LWX	Carroll, Frederick, Howard, Montgomery	6 hr

Nearby

Special Weather Statements in West Virginia, 2013 Special Weather Statements in Maryland, 2013 Every special weather statement 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.