Severe Thunderstorm Warning 179, NWS Raleigh, NC

Issued

Aug 18, 2003, 4:11 PM EDT (20:11 UTC)

Expired

Aug 18, 2003, 4:45 PM EDT

In force

34 min

Issued by

NWS Raleigh, NC

Area

Counties, with a storm outline in the text

County Johnston County, NC

The Raleigh/Durham radar (KRAX), 19 km from the middle of the area, began a volume at 20:10 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS52 KRAH 182011
SVRRAH
NCC101-182045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
410 PM EDT MON AUG 18 2003

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JOHNSTON COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 445 PM EDT

* AT 410 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EMIT...OR ABOUT 16 MILES NORTH OF
  SMITHFIELD...MOVING SOUTH AT 5 MPH. PENNY SIZED HAIL AND WINDS IN
  EXCESS OF 58 MPH ARE LIKELY WITH THIS STORM.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  FLOWERS

A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING
WINDS IN EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
GO INSIDE A STURDY SHELTER. MOVE TO AN INTERIOR ROOM AND STAY AWAY
FROM WINDOWS.

LAT...LON 3581 7822 3578 7844 3551 7840 3555 7813

$$

WSS

NWS Raleigh, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 2:20 PM EDT, 1 hour 51 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RALEIGH NC
220 PM EDT MON AUG 18 2003

WEATHER PATTERN SHORT TERM WILL FEATURE WEAK TROUGH OFF COAST
WITH BUILDING MID/UPPER LEVEL HIGH OVER THE OH VALLEY. THIS WILL
TRANSLATE TO A MOSTLY DRY WEEK ACROSS CENTRAL NC WITH TEMPS CLOSE TO
NORMAL.

WEAK VORT CENTER OVER WRN VA AT THIS TIME SHOULD CONTINUE TO MOVE
E-SE. TAIL END OF THIS FEATURE SHOULD ACROSS AREA THIS EVENING WITH
NVA SETTING UP BY 12Z TUE. WITH AIRMASS  MARGINALLY MOIST AND
MID/UPPER FLOW ADVECTING DRY AIR INTO COLUMN, FEATURE WILL NOT HAVE
MUCH TO WORK WITH. ETA DEPICTS CONCENTRATED AREA OF MOISTURE/LIFT
OVER WESTERN VA LATE TONIGHT...DROPPING SOUTH ACROSS WESTERN
PIEDMONT OF NC BY 12Z TUE.  NO JET DYNAMICS NOTED UPSTAIRS OVERNIGHT
AND VIRTUALLY NO LOW LEVEL CONVERGENCE. THUS, THIS SOLUTION WILL BE
IGNORED FOR NOW. WILL GO WITH SLIGHT CHANCE THROUGH EARLY EVENING TO
COVER POTENTIAL FOR ISOLATED CONVECTION.

BUILDING HEIGHTS IN THE MID/UPPER LEVELS AND FAIRLY DRY AIR COLUMN
SUGGEST WARM AND DRY CONDITIONS. LOW LEVEL THICKNESSES POINT TOWARD
MAX TEMPS CLOSE TO NORMAL AND MOS GUIDANCE.

WILL CONTINUE SLIGHT-SMALL CHANCE POP THU AS GFS HAS BEEN PERSISTENT
IN DEPICTING MOISTURE RETURN IN THE MID LEVELS. ALSO, ETA DEPICTS
LEE SIDE TROUGH DEVELOPING THU.

AMPLIFYING TROUGH OVER OH VALLEY FRI-SAT WILL CAUSE AN INCREASING
THREAT OF CONVECTION...MORE SO SAT.  SOME DISAGREEMENT TO TIMING OF
BOUNDARY, SO CHANCE POPS SUFFICE FOR NOW.  CONTINUED CHANCE POPS SUN
DUE TO TIMING UNCERTAINTY. DRY AND SEASONABLE CONDITIONS MON.

.RAH...NONE.

WSS

NCZ007>011-021>028-038>043-073>078-083>086-088-089-181105-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
507 AM EDT MON AUG 18 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

Severe Thunderstorm Warnings in North Carolina, 2003Every severe thunderstorm warning in 2003

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.