Alert archive / North Carolina / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 12, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Apr 12, 2013, 5:20 AM EDT for 4 counties in North Carolina. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 12, 2013, 5:20 AM EDT (09:20 UTC)
- Expired
- Apr 12, 2013, 6:00 AM EDT
- In force
- 40 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
Counties Chatham County, NC, Montgomery County, NC, Moore County, NC, Randolph County, NC
The radar
The Raleigh/Durham radar (KRAX), 103 km from the middle of the area, began a volume at 09:21 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 12, 2:57 AM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 9.3 hours before the alert went out and 68 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
- 29 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1610 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 3:27 AM EDT | Special Weather Statement | RAH | Alamance, Anson, Chatham, Cumberland, Davidson, Durham and 13 more | 63 min |
| Apr 12, 3:55 AM EDT | Severe Thunderstorm Warning | RAH | Davidson, Forsyth | 50 min |
| Apr 12, 4:42 AM EDT | Special Weather Statement | RAH | Guilford | 33 min |
| Apr 12, 5:00 AM EDT | Special Weather Statement | RAH | Montgomery, Stanly | 45 min |
| Apr 12, 6:03 AM EDT | Special Weather Statement | RAH | Chatham, Durham, Orange, Wake | 42 min |
| Apr 12, 6:30 AM EDT | Special Weather Statement | RAH | Granville | 30 min |
| Apr 12, 6:38 AM EDT | Special Weather Statement | RAH | Wake | 52 min |
| Apr 12, 6:51 AM EDT | Special Weather Statement | RAH | Granville, Vance | 39 min |
| Apr 12, 7:21 AM EDT | Special Weather Statement | RAH | Franklin | 39 min |
| Apr 12, 12:02 PM EDT | Special Weather Statement | RAH | Moore | 43 min |
| Apr 12, 12:35 PM EDT | Special Weather Statement | RAH | Lee | 40 min |
| Apr 12, 1:05 PM EDT | Special Weather Statement | RAH | Wake | 25 min |
| Apr 12, 1:16 PM EDT | Special Weather Statement | RAH | Harnett | 29 min |
| Apr 12, 1:36 PM EDT | Special Weather Statement | RAH | Johnston, Nash | 39 min |
| Apr 12, 2:32 PM EDT | Special Weather Statement | RAH | Edgecombe, Halifax, Wilson | 58 min |
| Apr 12, 3:41 PM EDT | Special Weather Statement | RAH | Sampson | 64 min |
| Apr 12, 4:42 PM EDT | Special Weather Statement | RAH | Wayne | 33 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2013Every severe thunderstorm warning in 2013
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.