Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 158, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Sep 29, 2020, 8:45 PM EDT for 4 counties in North Carolina. It was in force for 60 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 29, 2020, 8:45 PM EDT (00:45 UTC)
- Expired
- Sep 29, 2020, 9:45 PM EDT
- In force
- 60 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Johnston County, NC, Sampson County, NC, Wayne County, NC, Wilson County, NC
The radar
The Raleigh/Durham radar (KRAX), 42 km from the middle of the area, began a volume at 00:44 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
Newport, NC (KMHX), launched 00:00Z, 0.8 hours before the alert went out and 135 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
- 875 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.9
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Sep 29, 7:50 PM EDT, 55 minutes earlier.
Area forecast discussion, Sep 29, 7:50 PM EDT, 55 minutes before
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Hazardous Weather Outlook National Weather Service Raleigh NC 104 PM EDT Tue Sep 29 2020 NCZ007>011-021>028-038>043-073>078-083>086-088-089-301715- Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake- Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Wayne-Anson- Richmond-Scotland-Hoke-Cumberland-Sampson- 104 PM EDT Tue Sep 29 2020 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...This afternoon and tonight. A band of showers and thunderstorms will pose a risk of strong to locally damaging wind gusts, localized flooding and an isolated tornado late this afternoon and evening. The greatest severe weather threat will be from 4 to 7pm in the Triad, 6 to 10pm in the Triangle and Fayetteville area and 8 to 11pm in Goldsboro and Rocky Mount. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed.
In the hours before
Local storm report, Sep 29, 5:59 PM EDT, 2 hours 46 minutes before
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</html>Special weather statement, Sep 29, 5:59 PM EDT, 2 hours 46 minutes before
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</html>Local storm report, Sep 29, 6:03 PM EDT, 2 hours 42 minutes before
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</html>Special weather statement, Sep 29, 6:26 PM EDT, 2 hours 19 minutes before
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</html>Local storm report, Sep 29, 7:13 PM EDT, 1 hour 32 minutes before
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</html>Special weather statement, Sep 29, 7:38 PM EDT, 1 hour 7 minutes before
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 |
|---|---|---|---|---|
| Sep 30, 3:01 PM EDT | River Flood Warning | RAH | Johnston | 15 hr |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2020Every severe thunderstorm warning in 2020
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.