Alert archive / North Carolina / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 167, NWS Raleigh, NC

July 16, 2009Harnett County, Johnston County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 16, 2009, 3:08 PM EDT for Harnett County, Johnston County, North Carolina. It was in force for 39 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 16, 2009, 3:08 PM EDT (19:08 UTC)
Expired
Jul 16, 2009, 3:47 PM EDT
In force
39 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon

Counties Harnett County, NC, Johnston County, NC

The radar

The Raleigh/Durham radar (KRAX), 27 km from the middle of the area, began a volume at 19:11 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 12:00Z, 7.1 hours before the alert went out and 136 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 12:00Z on 2009-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 462 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 12:00Z on 2009-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
462 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
1022 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
79 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 16, 2:55 PM EDT, 13 minutes earlier.

Area forecast discussion, Jul 16, 2:55 PM EDT, 13 minutes before
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Hazardous weather outlook, Jul 16, 12:37 PM EDT, 2 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
1237 PM EDT THU JUL 16 2009

NCZ007>011-021>028-038>043-073>078-083>086-088-089-170930-
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-
1237 PM EDT THU JUL 16 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS CENTRAL NORTH CAROLINA
THIS AFTERNOON AND PERSIST UNTIL EARLY EVENING. A FEW OF THE
STORMS MAY BE BRIEFLY SEVERE PRODUCING WIND GUSTS AROUND 60 MPH.
THE THREAT FOR ISOLATED SEVERE THUNDERSTORMS APPEAR TO BE
GREATEST OVER THE SOUTHERN PIEDMONT...THE SANDHILLS...AND MOST OF
THE COASTAL PLAIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AGAIN
ON FRIDAY... AHEAD OF A WAVE OF LOW PRESSURE EXPECTED TO TRACK
THROUGH VIRGINIA. THE MAIN SEVERE THREAT WITH ANY STORMS WILL BE
DAMAGING WINDS AND LARGE HAIL... THOUGH AN ISOLATED TORNADO WILL BE
POSSIBLE NEAR THE VIRGINIA BORDER.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jul 16, 1:15 PM EDT, 1 hour 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
115 PM EDT THU JUL 16 2009

NCZ074-075-083>086-161815-
ANSON-HOKE-MONTGOMERY-MOORE-RICHMOND-SCOTLAND-
115 PM EDT THU JUL 16 2009

...SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS RICHMOND...MOORE...
MONTGOMERY...ANSON...HOKE AND SCOTLAND COUNTIES THROUGH 230 PM EDT...

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AND INTENSIFY AS
THEY MOVE EAST ACROSS THE SOUTHERN PIEDMONT AND SANDHILLS. THE
SHOWERS AND THUNDERSTORMS WILL BE MOST WIDESPREAD ACROSS SOUTHEAST
MONTGOMERY...SOUTHERN MOORE AND NORTHWESTERN HOKE COUNTIES THROUGH
AROUND 230 PM.

THE STRONGEST THUNDERSTORMS WILL CONTAIN GUSTY WINDS OF 30 TO 40
MPH...SMALL HAIL AND DANGEROUS CLOUD-TO-GROUND LIGHTNING.

BLAES
Special weather statement, Jul 16, 2:07 PM EDT, 1 hour 1 minute before
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Local storm report, Jul 16, 2:31 PM EDT, 37 minutes before
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Special weather statement, Jul 16, 2:38 PM EDT, 30 minutes before
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Special weather statement, Jul 16, 2:46 PM EDT, 22 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 1:26 PM EDTSevere Thunderstorm WarningRAHMontgomery, Moore, Richmond49 min
Jul 16, 3:28 PM EDTAreal Flood AdvisoryRAHRichmond48 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.