Alert archive / North Carolina / Special Weather Statements in 2017
Special Weather Statement, NWS Raleigh, NC
NWS Raleigh, NC issued this special weather statement at Apr 22, 2017, 3:02 PM EDT for Halifax County, North Carolina. It was in force for 28 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
- Apr 22, 2017, 3:02 PM EDT (19:02 UTC)
- Expired
- Apr 22, 2017, 3:30 PM EDT
- In force
- 28 min
- Issued by
- NWS Raleigh, NC
County Halifax County, NC
The radar
The Norfolk radar (KAKQ), 85 km from the middle of the area, began a volume at 19:02 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, 7.0 hours before the alert went out and 191 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
- 28 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 755 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Raleigh, NC wrote its last area forecast discussion before this special weather statement went out at Apr 22, 1:55 PM EDT, 1 hour 7 minutes earlier.
Area forecast discussion, Apr 22, 1:55 PM EDT, 1 hour 7 minutes before
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</html>Hazardous weather outlook, Apr 22, 7:12 AM EDT, 7 hours 50 minutes before
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</html>In the hours before
Special weather statement, Apr 22, 3:02 PM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 4:11 PM EDT | Flood Watch | RAH | Alamance, Anson, Chatham, Cumberland, Davidson, Durham and 25 more | 64 hr |
| Apr 22, 4:40 PM EDT | Special Weather Statement | RAH | Person | 65 min |
| Apr 22, 5:07 PM EDT | Special Weather Statement | RAH | Person | 53 min |
| Apr 22, 5:54 PM EDT | Special Weather Statement | RAH | Granville | 36 min |
Nearby
Special Weather Statements in North Carolina, 2017Every special weather statement in 2017
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.