Alert archive / Virginia / Special Weather Statements in 2012
Special Weather Statement, NWS Baltimore/Washington
NWS Baltimore/Washington issued this special weather statement at Mar 3, 2012, 1:07 AM EST for Nelson County, Virginia. It was in force for 38 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
- Mar 3, 2012, 1:07 AM EST (06:07 UTC)
- Expired
- Mar 3, 2012, 1:45 AM EST
- In force
- 38 min
- Issued by
- NWS Baltimore/Washington
County Nelson County, VA
The radar
The Roanoke radar (KFCX), 150 km from the middle of the area, began a volume at 06:06 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 00:00Z, 6.1 hours before the alert went out and 82 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
- 432 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 716 m²/s²
- 0-3 km storm-relative helicity
- 802 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
815
WWUS81 KLWX 030607
SPSLWX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
107 AM EST SAT MAR 3 2012
VAZ036-030645-
NELSON VA-
107 AM EST SAT MAR 3 2012
...STRONG THUNDERSTORM TO AFFECT NELSON COUNTY...
AT 108 AM EST...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
SOUTHWEST OF PIEDMONT...MOVING EAST AT 65 MPH.
LOCATIONS IMPACTED INCLUDE SHIPMAN.
HEAVY RAIN WITH THIS STORM WILL REDUCE VISIBILITIES TO BELOW ONE MILE
AND MAY CAUSE PONDING OF WATER ON ROADWAYS.
SMALL HAIL CAN BE EXPECTED WITH THIS STORM.
&&
LAT...LON 3754 7890 3768 7898 3781 7870 3776 7867
3774 7868 3773 7865 3768 7864 3767 7866
3769 7869 3763 7872 3764 7880 3760 7881
3759 7883 3756 7881 3753 7883
TIME...MOT...LOC 0608Z 250DEG 58KT 3758 7892
$$
BJLThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 9:41 PM EST | Areal Flood Warning | LWX | Rockingham | 2 hr |
| Mar 2, 9:55 PM EST | Areal Flood Warning | LWX | Augusta, Highland, Rockingham | 2 hr |
| Mar 2, 10:41 PM EST | Special Weather Statement | LWX | Arlington, Fairfax, Fauquier, Loudoun, Prince William, City of Alexandria and 4 more | 79 min |
| Mar 2, 11:52 PM EST | Special Weather Statement | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 53 min |
| Mar 3, 3:13 AM EST | Wind Advisory | LWX | Highland | 14 hr |
| Mar 3, 3:39 AM EST | Small Craft Advisory | LWX | 14 hr | |
| Mar 3, 3:39 AM EST | Small Craft Advisory | LWX | 48 hr | |
| Mar 3, 2:41 PM EST | Coastal Flood Advisory | LWX | Arlington, City of Alexandria, City of Falls Church | 3 hr |
| Mar 3, 12:58 AM EST | Special Weather Statement | LWX | Anne Arundel | 32 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.