Alert archive / North Carolina / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 236, NWS Raleigh, NC

July 28, 2009Anson County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 28, 2009, 12:05 AM EDT for Anson County, 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
Jul 28, 2009, 12:05 AM EDT (04:05 UTC)
Expired
Jul 28, 2009, 12:45 AM EDT
In force
40 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon

County Anson County, NC

The radar

The Columbia radar (KCAE), 147 km from the middle of the area, began a volume at 04:06 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 4.1 hours before the alert went out and 124 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2009-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 990 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2009-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
990 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jul 27, 10:07 PM EDT, 1 hour 58 minutes earlier.

Area forecast discussion, Jul 27, 10:07 PM EDT, 1 hour 58 minutes before
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Hazardous weather outlook, Jul 27, 7:00 PM EDT, 5 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
700 PM EDT MON JUL 27 2009

NCZ007>011-021>028-038>043-073>078-083>086-088-089-282300-
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-
700 PM EDT MON JUL 27 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THROUGH TONIGHT.

THERE REMAINS A SLIGHT RISK OF A FEW ISOLATED SEVERE THUNDERSTORMS
THIS EVENING MAINLY IN AREAS OVER THE NORTHWEST PIEDMONT. THE MAIN
THREAT FROM THUNDERSTORMS WILL BE DAMAGING DOWNBURST WINDS IN
EXCESS OF 60 MPH AND HAIL UP TO THE SIZE OF NICKELS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE OR
SIGNIFICANT WEATHER ASSOCIATED WITH THESE STORMS.

In the hours before

Local storm report, Jul 27, 10:58 PM EDT, 1 hour 7 minutes before
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Local storm report, Jul 27, 11:00 PM EDT, 1 hour 5 minutes before
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Local storm report, Jul 27, 11:10 PM EDT, 55 minutes before
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Local storm report, Jul 27, 11:13 PM EDT, 52 minutes before
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Local storm report, Jul 27, 11:31 PM EDT, 34 minutes before
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Special weather statement, Jul 27, 11:57 PM EDT, 8 minutes before
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The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 27, 8:04 PM EDTSevere Thunderstorm WarningRAHDavidson, Montgomery, Randolph, Stanly56 min
Jul 27, 8:28 PM EDTSevere Thunderstorm WarningRAHDavidson, Montgomery, Moore, Randolph62 min
Jul 27, 9:08 PM EDTAreal Flood AdvisoryRAHDavidson112 min
Jul 27, 9:26 PM EDTAreal Flood AdvisoryRAHAnson, Stanly6 days
Jul 27, 9:51 PM EDTFlash Flood WarningRAHStanly3 hr
Jul 27, 10:53 PM EDTSevere Thunderstorm WarningRAHAnson, Stanly19 min
Jul 28, 6:33 PM EDTSevere Thunderstorm WarningRAHHoke, Moore57 min
Jul 28, 6:43 PM EDTSevere Thunderstorm WarningRAHChatham, Lee, Wake62 min
Jul 28, 7:05 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Lee55 min
Jul 28, 7:08 PM EDTSevere Thunderstorm WarningRAHDurham, Franklin, Granville, Wake82 min
Jul 28, 7:56 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Sampson56 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2009Every severe thunderstorm warning in 2009

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.