Alert archive / North Carolina / Flash Flood Warnings in 1999

Flash Flood Warning 13, NWS Wilmington, NC

August 30, 1999Pender County, North Carolina

NWS Wilmington, NC issued this flash flood warning at Aug 30, 1999, 3:31 AM EDT for Pender County, North Carolina. It was in force for 2 hr. 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 30, 1999, 3:31 AM EDT (07:31 UTC)
Expired
Aug 30, 1999, 6:00 AM EDT
In force
2 hr
Issued by
NWS Wilmington, NC
Area
Whole counties

County Pender County, NC

The radar

The Wilmington radar (KLTX), 77 km from the middle of the area, began a volume at 07:32 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, 7.5 hours before the alert went out and 97 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, Newport, NC at 00:00Z on 1999-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1325 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, Newport, NC at 00:00Z on 1999-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.193958Sfc1 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
1325 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
720 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, NC wrote its last area forecast discussion before this flash flood warning went out at Aug 30, 3:05 AM EDT, 26 minutes earlier.

Area forecast discussion, Aug 30, 3:05 AM EDT, 26 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
305 AM EDT MON AUG 30 1999

APPEARS THAT DENNIS IS MAKING THE MUCH ANTICIPATED TURN TO THE
NORTHEAST. THE SYSTEM IS GETTING STEERED BY AN IMPRESSIVE SHORTWAVE
MOVING INTO THE NE US. THE UPPER TROUGH IS SHOWING SIGNS OF LIFTING
OUT AS THE STRONGEST WINDS ARE NOW ON THE EAST SIDE. THIS SUPPORTS
THE MODEL TRENDS OF BUILDING AN UPPER RIDGE OVER DENNIS BY TUE AND
SLOWING IT'S MOVEMENT OFF THE NC COAST. THIS COULD PROLONG THE
COASTAL FLOODING/EROSION ALONG THE OUTER BANKS...EVEN WITH THE STORM
WELL OFF THE COAST.

NOW THAT IT APPEARS THAT THE CENTER OF DENNIS WILL BE WELL
OFFSHORE...THINK HURRICANE FORCE WINDS WILL BE CONFINED TO GUSTS
ALONG THE COAST DURING THE NEXT 12-18 HRS. FURTHER INLAND...
SUSTAINED TROPICAL FORCE WINDS WILL BE HARD TO COME BY AND WILL
LIKELY OCCUR IN GUSTS AS WELL. (THANKS TO AKQ FOR COORD ON THIS).
WILL NUDGE WIND SPEEDS DOWN A BIT ALL ZONES. RAIN SHOULD RAPIDLY END
MOST LOCATIONS BY 00Z...EXCEPT FOR OUTER BANKS. LOW STALLED OFF THE
COAST AND MEAN RH NEAR 70% WILL KEEP CLOUDS/WIND IN THE FORECAST FOR
TUE.

CWF: WILL TWEAK AFT HURRICANE HOTLINE BUT PLAN ON KEEPING HEADLINES
AS IS.

.MHX...HURRICANE WARN OREGON INLET S INCLUDING PAM SND.
...TROP STORM WARN N OF OREGON INLET AND ALBEMARLE SND.
...HIGH WND WARN LATE TNT THRU MON DUPLIN/JONES/LENOIR/PITT/GREENE/
   MARTIN.

ELARDO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 2:02 AM EDTFlash Flood WarningILMBrunswick, New Hanover3 hr
Aug 30, 3:31 AM EDTFlash Flood WarningILMPender89 min
Aug 30, 4:57 AM EDTFlash Flood WarningILMBrunswick, New Hanover, Pender3 hr

Nearby

Flash Flood Warnings in North Carolina, 1999Every flash flood warning in 1999

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.