Alert archive / Virginia / Heat Advisories in 2012
Heat Advisory 6, NWS Blacksburg, VA
NWS Blacksburg, VA issued this heat advisory at Jul 7, 2012, 3:33 PM EDT for 11 counties in Virginia; Caswell County, Rockingham County, North Carolina. It took effect at Jul 8, 2012, 12:00 PM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Jul 7, 2012, 3:33 PM EDT (19:33 UTC)
- In effect from
- Jul 8, 2012, 12:00 PM EDT
- Expired
- Jul 8, 2012, 6:58 PM EDT
- In force
- 7 hr
- Issued by
- NWS Blacksburg, VA
Counties Caswell County, NC, Rockingham County, NC, Amherst County, VA, Appomattox County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, City of Danville, VA, City of Lynchburg, VA, City of Martinsville, VA, Halifax County, VA, Henry County, VA, Pittsylvania County, VA
The radar
The Roanoke radar (KFCX), 92 km from the middle of the area, began a volume at 19:34 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, 7.6 hours before the alert went out and 35 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
- 899 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1197 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Blacksburg, VA wrote its last area forecast discussion before this heat advisory went out at Jul 7, 1:35 PM EDT, 1 hour 58 minutes earlier.
Area forecast discussion, Jul 7, 1:35 PM EDT, 1 hour 58 minutes before
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</html>The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 1:17 PM EDT | Excessive Heat Warning | RNK | Charlotte, Halifax, Pittsylvania, City of Danville | 7 hr |
| Jul 6, 8:35 PM EDT | Special Weather Statement | RNK | Watauga | 55 min |
Nearby
Heat Advisories in Virginia, 2012Heat Advisories in North Carolina, 2012Every heat advisory 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.