Alert archive / North Carolina / Flash Flood Warnings in 2002
Flash Flood Warning 49, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Sep 18, 2002, 6:26 PM EDT for Forsyth County, North Carolina. It was in force for 94 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
- Sep 18, 2002, 6:26 PM EDT (22:26 UTC)
- Expired
- Sep 18, 2002, 8:00 PM EDT
- In force
- 94 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
County Forsyth County, NC
The radar
The Roanoke radar (KFCX), 99 km from the middle of the area, began a volume at 22:11 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, 10.4 hours before the alert went out and 32 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.
- Mixed-layer CAPE
- 1538 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 537 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS52 KRAH 182226
FFWRAH
NCC067-190000-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
623 PM EDT WED SEP 18 2002
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS EXTENDED A
* FLASH FLOOD WARNING FOR...
FORSYTH COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 800 PM EDT
* AT 623 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN CONTINUING MAINLY OVER THE WESTERN HALF OF FORSYTH
COUNTY...INCLUDING LEWISVILLE AND CLEMMONS.
* THUNDERSTORMS ARE CONTINUOUSLY REDEVELOPING OVER THE WARNED AREA...
RESULTING IN EXCESSIVE RAINFALL.
ABSOLUTELY DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER
COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED. MOVE TO HIGHER GROUND.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. NEVER ATTEMPT TO CROSS HIGH WATER IN A VEHICLE OR ON FOOT
$$
LAT...LON 3624 8021 3601 8021 3598 8039 3608 8047
3624 8043
281 follow-up statement
000 WGUS72 KRAH 190011 FFSRAH NCC067-190100- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 759 PM EDT WED SEP 18 2002 THE FLASH FLOOD WARNING IN EFFECT EARLIER THIS EVENING FOR FORSYTH COUNTY HAS NOW EXPIRED. HEAVY RAINS HAVE TAPERED OFF TO MOSTLY LIGHT SHOWERS AND CREEK LEVELS ARE RECEDING. HOWEVER...WATER MAY YET BE COVERING SOME ROADS IN THE WESTERN PART OF THE COUNTY...PARTICULARLY AROUND PFAFFTOWN. RADAR ESTIMATES SHOW THAT THREE TO SIX INCHES OF RAIN HAS FALLEN SINCE 400 PM THIS AFTERNOON ACROSS A LARGE PORTION OF CENTRAL AND WESTERN FORSYTH COUNTY. THE HEAVIEST APPEAR TO HAVE OCCURRED FROM NEAR LEWISVILLE AND PFAFFTOWN TO NEAR STANLEYVILLE...NORTH AND WEST OF WINSTON-SALEM. SOME ROADS HAVE BEEN FLOODED AND MAY CONTINUE TO BE IMPASSABLE UNTIL WATERS RECEDE LATER THIS EVENING. IN PARTICULAR... CONRAD... SAWMILL...GRAPEVINE...AND ROBINHOOD ROADS...ALL NEAR PFAFFTOWN HAVE HAD REPORTS OF FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF WATER ON HIGHWAYS. $$ 28
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 12:16 PM EDT | Flash Flood Warning | RAH | Cumberland | 59 min |
| Sep 18, 12:29 PM EDT | Flash Flood Warning | RAH | Chatham | 61 min |
| Sep 18, 2:42 PM EDT | Flash Flood Warning | RAH | Randolph | 108 min |
| Sep 18, 2:55 PM EDT | Flash Flood Warning | RAH | Guilford | 110 min |
| Sep 18, 3:04 PM EDT | Flash Flood Warning | RAH | Randolph | 116 min |
| Sep 18, 4:30 PM EDT | Flash Flood Warning | RAH | Forsyth | 2 hr |
| Sep 18, 4:52 PM EDT | Flash Flood Warning | RAH | Randolph | 98 min |
| Sep 18, 5:21 PM EDT | Flash Flood Warning | RAH | Davidson | 99 min |
| Sep 18, 5:37 PM EDT | Flash Flood Warning | RAH | Montgomery | 83 min |
| Sep 18, 5:51 PM EDT | Flash Flood Warning | RAH | Stanly | 84 min |
Nearby
Flash Flood Warnings in North Carolina, 2002Every flash flood warning in 2002
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.