Alert archive / Virginia / Special Weather Statements in 2012
Special Weather Statement, NWS Baltimore/Washington
NWS Baltimore/Washington issued this special weather statement at Aug 7, 2012, 7:21 PM EDT for Augusta County, City of Staunton, City of Waynesboro, Virginia. It was in force for 24 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
- Aug 7, 2012, 7:21 PM EDT (23:21 UTC)
- Expired
- Aug 7, 2012, 7:45 PM EDT
- In force
- 24 min
- Issued by
- NWS Baltimore/Washington
Counties Augusta County, VA, City of Staunton, VA, City of Waynesboro, VA
The radar
The Sterling radar (KLWX), 159 km from the middle of the area, began a volume at 23:23 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
Roanoke, VA (KRNK), launched 12:00Z, 11.4 hours before the alert went out and 112 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
- 699 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
616
WWUS81 KLWX 072321
SPSLWX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
721 PM EDT TUE AUG 7 2012
VAZ025-072345-
AUGUSTA VA-
721 PM EDT TUE AUG 7 2012
...STRONG THUNDERSTORM TO AFFECT AUGUSTA COUNTY...
AT 721 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER STAUNTON...
MOVING SOUTHEAST AT 10 MPH.
LOCATIONS IMPACTED INCLUDE WAYNESBORO AND LYNDHURST.
WIND GUSTS OF 40 TO 50 MPH CAN BE EXPECTED WITH THIS STORM.
&&
LAT...LON 3795 7897 3816 7920 3829 7904 3812 7878
3811 7878 3810 7879
TIME...MOT...LOC 2321Z 314DEG 9KT 3816 7904
$$The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 6:19 PM EDT | Special Marine Warning | LWX | 49 min | |
| Aug 7, 7:48 PM EDT | Flash Flood Warning | LWX | Augusta, City of Staunton | 51 min |
| Aug 7, 8:16 AM EDT | Special Weather Statement | LWX | Saint Mary's | 59 min |
| Aug 7, 5:57 PM EDT | Tornado Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 33 min |
Nearby
Special Weather Statements in Virginia, 2012Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.