Alert archive / Virginia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 352, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Sep 2, 2012, 8:16 PM EDT for Charlotte County, Halifax County, Virginia. It was in force for 79 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
- Sep 2, 2012, 8:16 PM EDT (00:16 UTC)
- Expired
- Sep 2, 2012, 9:35 PM EDT
- In force
- 79 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
Counties Charlotte County, VA, Halifax County, VA
The radar
The Raleigh/Durham radar (KRAX), 116 km from the middle of the area, began a volume at 00:17 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 |
|---|---|---|---|
| Sep 2, 8:25 PM EDT | TSTM WND DMG | 5 Nne Semora, VA | TREE DOWN AT GILMORE AND HENDERSON. TIME ESTIMATED BY RADAR. |
| Sep 2, 8:30 PM EDT | TSTM WND DMG | 2 Wsw Halifax, VA | TREE DOWN ON MOUNTAIN ROAD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 0.3 hours before the alert went out and 86 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
- 1632 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 693 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
390
WUUS51 KRNK 030016
SVRRNK
VAC037-083-030145-
/O.NEW.KRNK.SV.W.0352.120903T0016Z-120903T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
816 PM EDT SUN SEP 2 2012
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
HALIFAX COUNTY IN SOUTH CENTRAL VIRGINIA
SOUTHEASTERN CHARLOTTE COUNTY IN SOUTH CENTRAL VIRGINIA
* UNTIL 945 PM EDT.
* AT 811 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SOUTH
BOSTON...AND MOVING NORTHEAST AT 15 MPH.
* LOCATIONS IMPACTED INCLUDE...
SOUTH BOSTON...
SCOTTSBURG...
CLOVER...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INTENSE RAIN...FREQUENT LIGHTNING AND STRONG DAMAGING WINDS ARE
LIKELY FROM THIS STORM. TAKE COVER IN A STURDY STRUCTURE UNTIL THE
STORM PASSES.
IF ON OR NEAR THE KERR RESERVOIR...HEADWATERS OF BUGGS ISLAND
LAKE...GET OUT OF THE WATER AND MOVE TO SHORE...PREFERABLY INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 15 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW.
DON'T BE CAUGHT ON THE WATER IN A THUNDERSTORM!
WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF QUARTER OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 6 6...2 1 5...4 3 2 4.
&&
LAT...LON 3670 7864 3667 7863 3669 7867 3667 7870
3658 7871 3655 7873 3653 7908 3654 7921
3671 7918 3697 7875 3689 7849
TIME...MOT...LOC 0014Z 231DEG 12KT 3666 7897
$$2 follow-up statements
838
WWUS51 KRNK 030058
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
858 PM EDT SUN SEP 2 2012
VAC037-083-030145-
/O.CON.KRNK.SV.W.0352.000000T0000Z-120903T0145Z/
HALIFAX VA-CHARLOTTE VA-
858 PM EDT SUN SEP 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR HALIFAX AND SOUTHEASTERN CHARLOTTE COUNTIES...
AT 849 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM CAPABLE OF PRODUCING WINDS OF ABOUT 40 MPH
JUST WEST OF THE STAUNTON RIVER STATE PARK. THIS STORM HAS
WEAKENED...BUT MAY RESTRENGTHEN AS IT MOVES INTO SOUTHERN CHARLOTTE
COUNTY.
ADDITIONAL THUNDERSTORMS...SOME SEVERE...WERE MOVING NORTHEAST
THROUGH CASWELL COUNTY NORTH CAROLINA. THESE STORMS WILL MOVE INTO
EXTREME SOUTHWEST HALIFAX COUNTY BETWEEN 900 AND 930 PM. WIND GUSTS
OF UP TO 60 MPH ARE POSSIBLE WITH THESE STORMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO DAMAGING WIND GUSTS...INTENSE HEAVY RAIN IS
LIKELY WITH THESE STORMS. WATER WILL QUICKLY POND ON ROADS AND FILL
ROADSIDE DITCHES.
&&
LAT...LON 3670 7864 3667 7863 3669 7867 3667 7870
3658 7871 3655 7873 3653 7908 3654 7921
3671 7918 3697 7875 3689 7849
TIME...MOT...LOC 0053Z 231DEG 12KT 3670 7875
$$297
WWUS51 KRNK 030135
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
935 PM EDT SUN SEP 2 2012
VAC037-083-030141-
/O.CAN.KRNK.SV.W.0352.000000T0000Z-120903T0145Z/
HALIFAX VA-CHARLOTTE VA-
935 PM EDT SUN SEP 2 2012
...THE SEVERE THUNDERSTORM WARNING FOR HALIFAX AND SOUTHEASTERN
CHARLOTTE COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED.
HEAVY RAIN IS STILL LIKELY OVER THE AREA...BUT WIND SPEEDS SHOULD
REMAIN BELOW SEVERE CRITERIA. INTENSE HEAVY RAIN WILL CAUSE PONDING
OF WATER ON THE ROADS. TRAVELERS SHOULD USE EXTREME CAUTION WHEN
DRIVING AT NIGHT DURING HEAVY RAIN. WATER ON THE HIGHWAY MAY
CAUSE YOUR VEHICLE TO LOOSE TRACTION.
TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1 8 6 6...2 1 5...4 3 2 4.
LAT...LON 3670 7864 3667 7863 3669 7867 3667 7870
3658 7871 3655 7873 3653 7908 3654 7921
3671 7918 3697 7875 3689 7849
TIME...MOT...LOC 0131Z 231DEG 12KT 3678 7863
$$The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 8:05 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Franklin, Henry, Pittsylvania, City of Danville | 85 min |
| Sep 2, 8:44 PM EDT | Special Weather Statement | RNK | City of Roanoke | 31 min |
| Sep 3, 11:49 AM EDT | Flash Flood Watch | RNK | Amherst, Appomattox, Bedford, Buckingham, Campbell, Carroll and 13 more | 9 hr |
| Sep 3, 4:52 PM EDT | Special Weather Statement | RNK | Carroll, Floyd, Patrick | 53 min |
| Sep 3, 6:30 PM EDT | Special Weather Statement | RNK | Carroll, Floyd, Patrick, City of Galax | 30 min |
| Sep 3, 7:01 PM EDT | Special Weather Statement | RNK | Charlotte | 59 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2012Every severe thunderstorm warning in 2012
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.