Alert archive / North Carolina / Flash Flood Warnings in 2003

Flash Flood Warning 2, NWS Raleigh, NC

February 22, 2003Davidson County, Forsyth County, Guilford County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Feb 22, 2003, 12:11 PM EST for Davidson County, Forsyth County, Guilford County, North Carolina. It was in force for 3 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
Feb 22, 2003, 12:11 PM EST (17:11 UTC)
Expired
Feb 22, 2003, 3:30 PM EST
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Whole counties

Counties Davidson County, NC, Forsyth County, NC, Guilford County, NC

The radar

The Roanoke radar (KFCX), 115 km from the middle of the area, began a volume at 17:10 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, 5.2 hours before the alert went out and 19 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, Greensboro/Hi Pt, NC at 12:00Z on 2003-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2003-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 705 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
483 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
705 m²/s²
0-3 km storm-relative helicity
845 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KRAH 221713
FFWRAH
NCC057-067-081-222030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
1211 PM EST SAT FEB 22 2003

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DAVIDSON COUNTY IN CENTRAL NORTH CAROLINA
  GUILFORD COUNTY IN CENTRAL NORTH CAROLINA
  FORSYTH COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 330 PM EST

* AT 1211 PM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  MODERATE TO HEAVY RAIN ACROSS THE AREA. RAINFALL RATES OF 
  ONE INCH PER HOUR CAN BE EXPECTED TO CONTINUE UNTIL 1 PM. REPORTS 
  OF WATER ON ROADWAYS ARE BEING REPORTED BY LAW ENFORCEMENT IN  
  FORSYTH...GUILFORD AND DAVIDSON COUNTIES.

* SLOW MOVING SHOWERS WILL CAUSE FLOODING IN AND AROUND
   LEXINGTON.
   THOMASVILLE.
   GREENSBORO.
   WINSTON SALEM.
   HIGH POINT.
   AND STANLEYVILLE


EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS...STREETS AND UNDERPASSES.

SMALL CREEKS AND STREAMS WILL RAPIDLY FLOOD...POSSIBLY WASHING OUT
ROADS AND FLOODING NEARBY LOW AREAS.

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.

$$

LAT...LON 3625 8003 3623 7954 3590 7954 3592 8006
          3552 8007 3572 8033 3575 8045 3583 8047
          3584 8039 3596 8037 3605 8049 3616 8043
          3625 8045

04
2 follow-up statements
000 
WGUS72 KRAH 221818
FFSRAH
NCC057-067-081-222030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
111 PM EST SAT FEB 22 2003

...A FLASH FLOOD WARNING CONTINUES IN EFFECT FOR DAVIDSON COUNTY
  GUILFORD COUNTY AND FORSYTH COUNTY IN CENTRAL NORTH CAROLINA
  UNTIL 330 PM EST...

MODERATE RAINFALL WITH RATES ON UP TO ONE INCH PER HOUR WILL CONTINUE 
ACROSS THE AREA THROUGH 3 PM. SOME MINOR FLOODING IS BE REPORTED ACROSS 
DAVIDSON...GUILFORD AND FORSYTH COUNTIES. ADDITIONAL RAINFALL OVER
THE NEXT HOUR WILL CAUSE FLOODING OF LOW LYING AREAS AS WELL AS 
INTERSECTIONS...DITCHES AND UNDERPASSES. DO NOT ATTEMPT TO DRIVE
THROUGH AREAS WHERE WATER COVERS THE ROADWAY.

RUNOFF FROM THIS RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

LOCATIONS IN AND AROUND WINSTON SALEM...HIGH POINT...LEXINGTON 
AND GREENSBORO CAN EXPECT SOME FLOODING PROBLEMS.


$$

14
000 
WGUS72 KRAH 221914
FFSRAH
NCC057-067-081-221930-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
208 PM EST SAT FEB 22 2003

...THE FLASH FLOOD WARNING FOR DAVIDSON...FORSYTH AND GUILFORD 
COUNTIES HAS BEEN CANCELED...

MODERATE TO HEAVY RAIN HAS MOVED EAST OF THE AREA AND ONLY SOME 
PATCHY LIGHT RAIN IS EXPECTED FOR THE REST OF THE AFTERNOON.
NO FLOODING PROBLEMS ARE BEING REPORTED AND THE WARNINGS HAVE BEEN
CANCELED.

$$

04

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 22, 10:39 AM ESTSevere Thunderstorm WarningRAHAnson, Stanly51 min
Feb 22, 11:09 AM ESTSevere Thunderstorm WarningRAHMontgomery, Randolph36 min
Feb 22, 11:21 AM ESTFlash Flood WarningRAHForsyth, Guilford54 min
Feb 22, 11:36 AM ESTSevere Thunderstorm WarningRAHAlamance, Chatham24 min
Feb 22, 11:43 AM ESTTornado WarningRAHAlamance, Randolph32 min
Feb 22, 11:55 AM ESTSevere Thunderstorm WarningRAHChatham, Orange35 min
Feb 22, 12:05 PM ESTTornado WarningRAHDurham, Orange25 min
Feb 22, 12:22 PM ESTTornado WarningRAHGranville23 min
Feb 22, 12:26 PM ESTSevere Thunderstorm WarningRAHLee, Moore34 min
Feb 22, 12:33 PM ESTSevere Thunderstorm WarningRAHWake42 min
Feb 22, 12:39 PM ESTTornado WarningRAHVance36 min
Feb 22, 12:54 PM ESTSevere Thunderstorm WarningRAHWarren36 min
Feb 22, 1:57 PM ESTSevere Thunderstorm WarningRAHNash33 min
Feb 22, 2:12 PM ESTSevere Thunderstorm WarningRAHEdgecombe, Wilson33 min
Feb 22, 3:03 PM ESTSevere Thunderstorm WarningRAHSampson27 min
Feb 22, 3:24 PM ESTSevere Thunderstorm WarningRAHWayne36 min

Nearby

Flash Flood Warnings in North Carolina, 2003Every flash flood warning in 2003

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.