Alert archive / North Carolina / Flash Flood Warnings in 1998

Flash Flood Warning 27, NWS Raleigh, NC

July 20, 1998Franklin County, Wake County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Jul 20, 1998, 8:40 PM EDT for Franklin County, Wake 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: Jul 20, 1998, 8:40 PM EDT (00:40 UTC)
Expired: Jul 20, 1998, 10:40 PM EDT
In force: 2 hr
Issued by: NWS Raleigh, NC
Area: Whole counties

Counties Franklin County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 30 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 130 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: 14 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2234 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KRDU 210041
FFWRDU
NCC069-183-210240-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
840 PM EDT MON JUL 20 1998

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN FRANKLIN COUNTY
  NORTHEASTERN WAKE COUNTY

* UNTIL 1040 PM EDT

* AT 835 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAIN ALONG THE WAKE/FRANKLIN COUNTY LINE IN THE VICINITY OF
  WAKE FOREST... MOVING SLOWLY DRIFTING SOUTHEAST.

* THUNDERSTORMS ALONG THE WAKE/FRANKLIN COUNTY LINE ARE PRODUCING
  HEAVY RAINS WHILE SLOWLY DRIFTING SOUTHEAST. RAINFALL AMOUNTS IN
  EXCESS OF TWO INCHES AN HOUR ARE LIKELY. HEAVIEST RAINS ARE
LIKELY IN THE VICINITY OF WAKE FOREST AND YOUNGSVILLE.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

RLH

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.

In the hours before

Local storm report, Jul 20, 6:35 PM EDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
635 PM EDT MON JUL 20 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0625 PM    ASHEBORO                  NC   WIND DAMAGE
07/20/98   RANDOLPH                       EMERGENCY MANAGEMENT
                                          REPORTED TREES DOWNED ON
                                          OLD LEXINGTON RD. ABOUT 5
                                          MILES NW OF
                                          ASHEBORO...DIME-SIZE HAIL
                                          WAS ALSO REPORTED.

Local storm report, Jul 20, 7:41 PM EDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
741 PM EDT MON JUL 20 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0655 PM    ASHEBORO                  NC   WIND DAMAGE
07/20/98   RANDOLPH                       EMERGENCY MANGAGEMENT
                                          REPORTED TREES DOWN AND
                                          DIME-SIZE HAIL ABOUT 10
                                          MILES SOUTWEST OF
                                          ASHEBORO.

0700 PM    RAMSEUR                   NC   WIND DAMAGE
07/20/98   RANDOLPH                       SKYWARN REPORTED TREES
                                          DOWN ON HWY 64 5 MILES
                                          EAST OF RAMSEUR...LIMBS
                                          CRASHED THROUGH WINDSHIELD
                                          OF CAR CAUSING AN
                                          ACCIDENT.

Local storm report, Jul 20, 8:03 PM EDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
803 PM EDT MON JUL 20 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0730 PM    ROANOKE RAPIDS            NC   WIND DAMAGE
07/20/98   HALIFAX                        HALIFAX 911 REPORTED TREES
                                          DOWN 10 MILES SW OF
                                          ROANOKE RAPIDS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 8:33 PM EDT	Severe Thunderstorm Warning	RAH	Wake	47 min
Jul 20, 8:45 PM EDT	Severe Thunderstorm Warning	RAH	Stanly	45 min
Jul 20, 9:40 PM EDT	Severe Thunderstorm Warning	RAH	Stanly	35 min

Nearby

Flash Flood Warnings in North Carolina, 1998 Every flash flood warning in 1998

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.