Alert archive / North Carolina / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 169, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Sep 21, 2024, 11:29 PM EDT for 5 counties in North Carolina. It was in force for 46 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
- Sep 21, 2024, 11:29 PM EDT (03:29 UTC)
- Expired
- Sep 22, 2024, 12:15 AM EDT
- In force
- 46 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Durham County, NC, Granville County, NC, Orange County, NC, Person County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 60 km from the middle of the area, began a volume at 03:29 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, 3.5 hours before the alert went out and 134 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
- 181 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1465 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 9:20 PM EDT | Special Weather Statement | RAH | Granville, Vance | 55 min |
| Sep 21, 9:35 PM EDT | River Flood Warning | RAH | Wayne | 42 hr |
| Sep 21, 10:48 PM EDT | Special Weather Statement | RAH | Granville, Person, Vance | 57 min |
| Sep 21, 11:26 PM EDT | Special Weather Statement | RAH | Durham, Franklin | 64 min |
| Sep 22, 12:17 AM EDT | Special Weather Statement | RAH | Durham, Franklin, Orange, Wake | 58 min |
| Sep 22, 1:14 AM EDT | Special Weather Statement | RAH | Johnston, Wake, Wayne | 61 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2024Every severe thunderstorm warning in 2024
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.