Alert archive / North Carolina / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 302, NWS Raleigh, NC

August 17, 2009Hoke County, Scotland County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 17, 2009, 3:15 PM EDT for Hoke County, Scotland County, 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: Aug 17, 2009, 3:15 PM EDT (19:15 UTC)
Expired: Aug 17, 2009, 4:15 PM EDT
In force: 60 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon

Counties Hoke County, NC, Scotland County, NC

The radar

The Raleigh/Durham radar (KRAX), 114 km from the middle of the area, began a volume at 19:10 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, 7.3 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1792 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 22 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 Aug 17, 3:04 PM EDT, 11 minutes earlier.

Area forecast discussion, Aug 17, 3:04 PM EDT, 11 minutes before

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Hazardous weather outlook, Aug 17, 4:13 AM EDT, 11 hours 2 minutes before

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In the hours before

Special weather statement, Aug 17, 2:14 PM EDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
214 PM EDT MON AUG 17 2009

NCZ008-024>026-041-171945-
DURHAM-FRANKLIN-GRANVILLE-ORANGE-WAKE-
214 PM EDT MON AUG 17 2009

...ISOLATED THUNDERSTORMS DEVELOPING ACROSS THE TRIANGLE...

AT 210 PM EDT...DOPPLER RADAR SHOWED DEVELOPING THUNDERSTORMS WITH
VERY HEAVY RAIN ACROSS EASTERN ORANGE...CENTRAL DURHAM AND NORTHERN
WAKE COUNTIES. THESE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT
20 MPH.

THE STRONGEST THUNDERSTORM WITH VERY HEAVY RAIN ALONG WITH SMALL
HAIL AND GUSTY WINDS WILL MOVE NEAR BETHESDA...GORMAN...FALLS
LAKE...PURNELL...WAKE FOREST THROUGH 315 PM.

BLAES

Special weather statement, Aug 17, 2:36 PM EDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
236 PM EDT MON AUG 17 2009

NCZ075-171930-
MOORE-
236 PM EDT MON AUG 17 2009

...A STRONG THUNDERSTORM WILL MOVE ACROSS MOORE COUNTY THROUGH 330 PM
EDT...

AT 235 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
TAYLORTOWN...OR ABOUT 8 MILES SOUTHWEST OF CARTHAGE...MOVING SLOWLY
EAST AT 5 MPH.

SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...TAYLORTOWN...
PINEHURST...WHISPERING PINES.

GUSTY WINDS OF 30 TO 40 MPH...SMALL HAIL AND DANGEROUS
CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED WITH THESE THUNDERSTORMS.

IN ADDITION...VERY HEAVY RAIN WITH RAINFALL RATES EXCEEDING
EXCEEDING ONE INCH DURING THE NEXT HOUR CAN BE EXPECTED IN THESE
AREAS. MOTORISTS SHOULD DRIVE WITH CAUTION TO AVOID HYDROPLANING.

SMITH

Special weather statement, Aug 17, 3:12 PM EDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
312 PM EDT MON AUG 17 2009

NCZ075-085-086-172015-
HOKE-MOORE-SCOTLAND-
312 PM EDT MON AUG 17 2009

...STRONG THUNDERSTORMS WILL MOVE AFFECT SOUTHERN MOORE...WESTERN
HOKE AND NORTHERN SCOTLAND COUNTIES THROUGH 415 PM EDT...

AT 311 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
CAMP MACKALL...OR ABOUT 12 MILES SOUTH OF SOUTHERN PINES...MOVING
EAST AT 5 MPH.

SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...BOWMORE... CAMP
MACKALL.

GUSTY WINDS OF 40 TO 50 MPH...VERY HEAVY RAIN AND DANGEROUS
CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED WITH THESE STORMS. THESE
WINDS ARE CAPABLE OF BRINGING DOWN LARGE TREE LIMBS. LIGHT OBJECTS
SUCH AS TRASH CANS...POTTED PLANTS...LAWN FURNITURE AND AWNINGS COULD
BE TOSSED AROUND.

VERY HEAVY RAIN WITH RAINFALL AMOUNTS EXCEEDING TWO TO THREE INCHES
DURING THE NEXT HOUR CAN BE EXPECTED IN THESE AREAS. MOTORISTS SHOULD
DRIVE WITH CAUTION TO AVOID HYDROPLANING. MINOR FLOODING OF LOW LYING
AREAS...CREEKS...STREAMS AND SOME ROADS CAN BE EXPECTED.

BSD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 2:48 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Orange, Person	42 min
Aug 17, 3:07 PM EDT	Areal Flood Advisory	RAH	Moore	100 min
Aug 17, 3:25 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Lee	51 min
Aug 17, 3:53 PM EDT	Areal Flood Advisory	RAH	Wake	86 min
Aug 17, 4:14 PM EDT	Areal Flood Advisory	RAH	Orange	39 min
Aug 17, 4:28 PM EDT	Severe Thunderstorm Warning	RAH	Richmond, Scotland	39 min
Aug 17, 4:36 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wake	39 min
Aug 17, 4:45 PM EDT	Areal Flood Advisory	RAH	Wake	61 min
Aug 17, 4:49 PM EDT	Areal Flood Advisory	RAH	Richmond, Scotland	43 min
Aug 17, 4:52 PM EDT	Severe Thunderstorm Warning	RAH	Granville, Vance	38 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2009 Every 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.