Alert archive / Virginia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Mar 23, 2011, 7:51 PM EDT for 10 counties in Virginia. It was in force for 39 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 23, 2011, 7:51 PM EDT (23:51 UTC)
- Expired
- Mar 23, 2011, 8:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
Counties Culpeper County, VA, Fauquier County, VA, Greene County, VA, Madison County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA
The radar
The Sterling radar (KLWX), 68 km from the middle of the area, began a volume at 23:52 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 23, 7:52 PM EDT | HAIL 0.75 | 3 Nne Nethers, VA | |
| Mar 23, 8:05 PM EDT | TSTM WND DMG | 1 Wnw Jeffersonton, VA | LARGE BRANCHES DOWN ALONG STATE ROUTE 229 RIXEYVILLE ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 23, 4:13 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.9 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
- 0 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 304 m²/s²
- 0-3 km storm-relative helicity
- 428 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
043
WUUS51 KLWX 232351
SVRLWX
VAC047-061-079-113-137-139-157-165-171-187-240030-
/O.NEW.KLWX.SV.W.0021.110323T2351Z-110324T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
751 PM EDT WED MAR 23 2011
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN ORANGE COUNTY IN CENTRAL VIRGINIA...
NORTHERN GREENE COUNTY IN CENTRAL VIRGINIA...
MADISON COUNTY IN NORTHWEST VIRGINIA...
CULPEPER COUNTY IN NORTHERN VIRGINIA...
EASTERN PAGE COUNTY IN NORTHWEST VIRGINIA...
RAPPAHANNOCK COUNTY IN NORTHWEST VIRGINIA...
FAUQUIER COUNTY IN NORTHERN VIRGINIA...
SOUTHERN WARREN COUNTY IN NORTHWEST VIRGINIA...
EAST CENTRAL SHENANDOAH COUNTY IN NORTHWEST VIRGINIA...
SOUTHEASTERN ROCKINGHAM COUNTY IN WESTERN VIRGINIA...
* UNTIL 830 PM EDT
* AT 748 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP TO THE
SIZE OF QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTH OF
SPERRYVILLE TO 6 MILES EAST OF BIG MEADOWS TO 18 MILES WEST OF
STANARDSVILLE...AND MOVING EAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
STANARDSVILLE...
HUME...
MADISON...
CULPEPER...
THE PLAINS...
WARRENTON...
BEALETON...
ORANGE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WIND GUSTS...LARGE HAIL AND FREQUENT CLOUD
TO GROUND LIGHTNING. MOVE INDOORS TO A STURDY BUILDING AND STAY AWAY
FROM WINDOWS.
THIS STORM IS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. IF YOU
CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
MOVE INDOORS IMMEDIATELY.
&&
LAT...LON 3887 7773 3850 7764 3825 7811 3828 7873
3855 7842 3892 7839
TIME...MOT...LOC 2351Z 272DEG 43KT 3883 7826 3855 7828
3826 7872
$$
HTS2 follow-up statements
705
WWUS51 KLWX 240004
SVSLWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
804 PM EDT WED MAR 23 2011
VAC139-165-171-240014-
/O.CAN.KLWX.SV.W.0021.000000T0000Z-110324T0030Z/
PAGE VA-SHENANDOAH VA-ROCKINGHAM VA-
804 PM EDT WED MAR 23 2011
...THE SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHEASTERN
ROCKINGHAM...EAST CENTRAL SHENANDOAH AND EASTERN PAGE COUNTIES...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE WARNED
AREA. THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 3855 7821 3890 7813 3887 7773 3850 7764
3825 7811 3827 7860
TIME...MOT...LOC 0004Z 272DEG 43KT 3882 7806 3854 7808
3825 7852
$$
VAC047-061-079-113-137-157-187-240030-
/O.CON.KLWX.SV.W.0021.000000T0000Z-110324T0030Z/
ORANGE VA-GREENE VA-MADISON VA-CULPEPER VA-RAPPAHANNOCK VA-
FAUQUIER VA-WARREN VA-
804 PM EDT WED MAR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR EAST CENTRAL WARREN...FAUQUIER...EASTERN RAPPAHANNOCK...
CULPEPER...MADISON...CENTRAL GREENE AND NORTHWESTERN ORANGE
COUNTIES...
AT 800 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP
TO THE SIZE OF QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES WEST OF
HUME TO 9 MILES NORTHWEST OF CULPEPER TO 7 MILES NORTH OF FREE
UNION...MOVING EAST AT 50 MPH.
LOCATIONS IMPACTED INCLUDE...
HUME...
SHELBY...
PRATTS...
LEON...
ADA...
ASHVILLE...
MARSHALL...
BURTONVILLE...
THE PLAINS...
LOCUST DALE...
BRANDY STATION...
BETHEL...
THE PLAINS...
NEW BALTIMORE...
MITCHELLS...
CASANOVA...
RACCOON FORD...
CALVERTON...
MORRISVILLE...
LIGNUM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING DAMAGING
WIND GUSTS. SEEK SHELTER INSIDE A STURDY STRUCTURE AND STAY AWAY
FROM WINDOWS.
&&
LAT...LON 3855 7821 3890 7813 3887 7773 3850 7764
3825 7811 3827 7860
TIME...MOT...LOC 0004Z 272DEG 43KT 3882 7806 3854 7808
3825 7852
$$
HTS191
WWUS51 KLWX 240017
SVSLWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
817 PM EDT WED MAR 23 2011
VAC079-187-240027-
/O.CAN.KLWX.SV.W.0021.000000T0000Z-110324T0030Z/
GREENE VA-WARREN VA-
817 PM EDT WED MAR 23 2011
...THE SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EAST CENTRAL
WARREN AND CENTRAL GREENE COUNTIES...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE WARNED
AREA. THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 3828 7834 3856 7801 3885 7796 3887 7773
3850 7764 3825 7811
TIME...MOT...LOC 0017Z 272DEG 43KT 3881 7786 3853 7788
3824 7832
$$
VAC047-061-113-137-157-240030-
/O.CON.KLWX.SV.W.0021.000000T0000Z-110324T0030Z/
ORANGE VA-MADISON VA-CULPEPER VA-RAPPAHANNOCK VA-FAUQUIER VA-
817 PM EDT WED MAR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR CENTRAL FAUQUIER...EXTREME EAST CENTRAL RAPPAHANNOCK...
CULPEPER...SOUTHEASTERN MADISON AND NORTH CENTRAL ORANGE COUNTIES...
AT 813 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP
TO THE SIZE OF QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM HUME TO 5 MILES
NORTHEAST OF CULPEPER TO STANARDSVILLE...MOVING EAST AT 50 MPH.
LOCATIONS IMPACTED INCLUDE...
RACCOON FORD...
NEW BALTIMORE...
MITCHELLS...
LOIS...
MORRISVILLE...
LIGNUM...
SUMERDUCK...
CALVERTON...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WIND GUSTS...LARGE HAIL AND FREQUENT CLOUD
TO GROUND LIGHTNING. MOVE INDOORS TO A STURDY BUILDING AND STAY AWAY
FROM WINDOWS.
&&
LAT...LON 3828 7834 3856 7801 3885 7796 3887 7773
3850 7764 3825 7811
TIME...MOT...LOC 0017Z 272DEG 43KT 3881 7786 3853 7788
3824 7832
$$
HTSThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 4:17 AM EDT | Small Craft Advisory | LWX | 46 hr | |
| Mar 23, 5:06 PM EDT | Special Weather Statement | LWX | Nelson | 24 min |
| Mar 23, 5:18 PM EDT | Small Craft Advisory | LWX | 33 hr | |
| Mar 23, 5:19 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Highland | 26 min |
| Mar 23, 5:29 PM EDT | Special Weather Statement | LWX | Albemarle, City of Charlottesville, City of Waynesboro | 31 min |
| Mar 23, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Rockingham | 36 min |
| Mar 23, 6:16 PM EDT | Special Weather Statement | LWX | Greene, Orange | 29 min |
| Mar 23, 6:18 PM EDT | Special Weather Statement | LWX | Augusta, City of Staunton | 27 min |
| Mar 23, 6:38 PM EDT | Special Weather Statement | LWX | Greene, Madison | 22 min |
| Mar 23, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham, Shenandoah | 35 min |
| Mar 23, 6:59 PM EDT | Special Weather Statement | LWX | Madison, Orange | 31 min |
| Mar 23, 7:03 PM EDT | Special Weather Statement | LWX | Frederick, City of Winchester | 42 min |
| Mar 23, 7:06 PM EDT | Special Marine Warning | LWX | 38 min | |
| Mar 23, 7:10 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, Warren | 50 min |
| Mar 23, 7:15 PM EDT | Special Weather Statement | LWX | Augusta, City of Staunton | 30 min |
| Mar 23, 7:30 PM EDT | Special Marine Warning | LWX | 15 min | |
| Mar 23, 7:30 PM EDT | Special Weather Statement | LWX | Page, Rappahannock, Shenandoah | 45 min |
| Mar 23, 7:32 PM EDT | Special Marine Warning | LWX | 13 min | |
| Mar 23, 7:34 PM EDT | Special Weather Statement | LWX | Clarke, Loudoun, City of Winchester | 56 min |
| Mar 23, 7:46 PM EDT | Special Weather Statement | LWX | Warren | 44 min |
| Mar 23, 7:59 PM EDT | Special Weather Statement | LWX | Albemarle, Orange, City of Charlottesville, City of Waynesboro | 31 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.