Alert archive / North Carolina / Flash Flood Warnings in 2003

Flash Flood Warning 119, NWS Greenville-Spartanburg, SC

August 14, 2003Mecklenburg County, Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 14, 2003, 6:23 PM EDT for Mecklenburg County, Union 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 outline as issued.

The facts

Issued
Aug 14, 2003, 6:23 PM EDT (22:23 UTC)
Expired
Aug 14, 2003, 9:15 PM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

Counties Mecklenburg County, NC, Union County, NC

The radar

The Columbia radar (KCAE), 138 km from the middle of the area, began a volume at 22:24 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.4 hours before the alert went out and 124 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 2003-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 575 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, Greensboro/Hi Pt, NC at 12:00Z on 2003-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939Sfc1 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
575 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
52 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 
WGUS52 KGSP 142223
FFWGSP
NCC119-179-150115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
623 PM EDT THU AUG 14 2003

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH CAROLINA
  UNION COUNTY IN THE PIEDMONT OF NORTH CAROLINA

* UNTIL 915 PM EDT

* AT 620 PM EDT...WEATHER RADAR SHOWED A BAND OF SHOWERS AND 
  THUNDERSTORMS ASSOCIATED WITH TORRENTIAL RAINFALL STRETCHING FROM 
  HUNTERSVILLE...TO MATTHEWS...WAXHAW...AND MONROE. RAINFALL OF 1 TO 
  2 INCHES PER HOUR WAS FALLING AS THE BAND OF STORMS WORKED ITS WAY
  TO THE SOUTHWEST...TOWARD CHARLOTTE AND PINEVILLE. RADAR ALSO SHOWED
  ANOTHER CLUSTER OF STORMS TO THE NORTHEAST...THAT WILL BE FOLLOWING
  ALONG THE SAME PATH AS THE CURRENT AREA OF STORMS.
  
* URBAN FLOODING IS LIKELY IN CHARLOTTE AND MONROE...AND RISES ON
  AREA STREAMS AND CREEKS COULD BE SIGNIFICANT ENOUGH TO SEND SOME
  OUT OF THEIR BANKS TO OVERFLOW ONTO ROADS. NORMALLY FLOOD PRONE 
  AREAS NEAR MATTHEWS AND INDIAN TRAIL WILL MOST LIKELY EXPERIENCE
  PONDING OF WATER. IF FLOODING DOES NOT OCCUR WITH THE FIRST
  BATCH OF STORMS...WATER LEVELS MAY NOT GET TO RECEDE MUCH BEFORE
  THE SECOND ROUND RESULTS IN ADDITIONAL STREAM AND CREEK RISES.

  STREAMS THAT NEED TO BE MONITORED CLOSELY FOR POSSIBLE FLASH FLOODING
  INCLUDE THE SUGAR...LITTLE SUGAR AND MCALPINE CREEKS IN CHARLOTTE
  AND PADDLE BRANCH...CROOKED CREEK...GOOSE CREEK AND RICHARDSON
  CREEK IN UNION COUNTY.

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. EVEN MODERN SPORT UTILITY VEHICLES CANNOT BE
SAFELY DRIVEN THROUGH FLOOD WATERS.

TO REPORT FLOODING HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR
REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
GREENVILLE-SPARTANBURG.

LAT...LON 3512 7989 3486 8014 3482 8039 3482 8075
          3495 8088 3515 8101 3538 8093 3534 8076
          3515 8052 3517 8035

$$
BURRUS
2 follow-up statements
000 
WGUS72 KGSP 142346
FFSGSP
NCC119-179-150130-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
744 PM EDT THU AUG 14 2003

...A FLASH FLOOD WARNING CONTINUES UNTIL 915 PM EDT FOR MECKLENBURG
AND UNION COUNTIES...

AT 740 PM EDT...RADAR INDICATED THAT THE INITIAL BAND OF HEAVY RAIN 
HAD MOVED SOUTH OF THE AREA. HOWEVER...A SMALLER AREA OF MODERATE TO 
HEAVY RAIN WAS MOVING SOUTHEAST ACROSS THE MECKLENBURG...UNION 
COUNTY LINE.

THE UNION COUNTY COMMUNICATIONS CENTER REPORTED THAT WATER RESCUES 
WERE BEING CONDUCTED IN THE WESTERN PART OF THE COUNTY. ROADS WERE 
REPORTED TO BE FLOODED AND IMPASSABLE IN THE WEDDINGTON AND INDIAN 
TRAIL AREAS. A SPOTTER REPORTED THAT A CREEK WHICH FEEDS INTO 12 
MILE CREEK IN WEDDINGTON WAS COMING UP INTO LAWNS AND COVERED PART 
OF A DRIVEWAY...THE HIGHEST THE WATER HAD BEEN IN THAT AREA IN FIVE 
YEARS.

THE SAME SPOTTER REPORTED 2.82 INCHES OF RAIN IN A LITTLE OVER AN 
HOURS TIME. RADAR ESTIMATED THAT 2 TO 3 INCHES OF RAIN HAD FALLEN 
ACROSS A LARGE PART OF CENTRAL AND WESTERN UNION COUNTY...AND A 
SMALL PART OF EASTERN MECKLENBURG COUNTY...WITH AMOUNTS APPROACHING 
4 INCHES BETWEEN FAIRVIEW AND MINT HILL.
 
RUNOFF FROM THE HEAVY RAIN...AND ADDITIONAL RAIN MOVING INTO THE 
AREA...WILL LIKELY CAUSE A FEW MORE STREAMS TO LEAVE THEIR BANKS 
ALONG THE MECKLENBURG...UNION COUNTY LINE.

DURING HEAVY RAIN EVENTS...SEVERE URBAN FLOODING CAN OCCUR IN AREAS
SUCH AS UNDERPASSES...AND LOW AREAS WHERE WATER TENDS TO COLLECT.
CHILDREN SHOULD BE KEPT AWAY FROM SMALL STREAMS AND STORM DRAINS.

DO NOT BECOME A FATALITY DO NOT CROSS FLOODED ROADS...THE ROAD COULD
BE WASHED OUT FROM THE FLOW OF THE WATER...AND YOUR CAR COULD BE
SWEPT AWAY BY THE SWIFTLY MOVING WATER.

$$
MCAVOY
000 
WGUS72 KGSP 150116
FFSGSP
NCC119-150145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
916 PM EDT THU AUG 14 2003

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT FOR MECKLENBURG COUNTY
HAS EXPIRED AS OF 915 PM EDT...

THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN
THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE
FLASH FLOOD THREAT. EVEN THOUGH STREAMS AND CREEKS WERE RECEDING...
SOME ROADWAYS STILL MAY BE COVERED WITH WATER. MOTORISTS ARE ADVISED
TO AVOID DRIVING THROUGH FLOODED ROADWAYS.

DO NOT BECOME A FATALITY DO NOT CROSS FLOODED ROADS...THE ROAD COULD
BE WASHED OUT FROM THE FLOW OF THE WATER...AND YOUR CAR COULD BE
SWEPT AWAY BY THE SWIFTLY MOVING WATER.

$$
BURRUS

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this flash flood warning went out at Aug 14, 2:26 PM EDT, 3 hours 57 minutes earlier.

Area forecast discussion, Aug 14, 2:26 PM EDT, 3 hours 57 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
226 PM EDT THU AUG 14 2003

UPPER LEVEL RIDGE TO CONTINUE RETROGRESSION...WITH ANOTHER EAST
COAST TROUGH BEING CARVED OUT BY SHORTWAVES BY SAT. IMPULSE DROPPING
S ACROSS AREA THIS EVENING. BEST INSTABILITY E...BUT OROGRAPHIC
EFFECTS ALREADY RESULTING IN CONVECTION W. PLENTY OF DEEP MOISTURE
TO WORK WITH. AREA BETWEEN IMPULSES FRI...WITH MID LEVELS DRIER.
INSTABILITY AGAIN BEST IN E. A SLIGHTLY STRONGER IMPULSE CROSSES
AREA SAT...WITH DEEP MOISTURE BACK IN PLACE. STRONG SHORTWAVE
CROSSES AREA SUN ACCOMPANIED BY SURFACE COLD FRONT...WITH MID LEVELS
DRYING AGAIN.

WILL CARRY CHANCE POPS EACH AFTERNOON AND EVENING. TEMPERATURES
INITIALLY WARM UNDER UPPER RIDGE...THEN COOLING A COUPLE OF DEGREES
AS HEIGHTS FALL IN DIGGING TROUGH.

EXTENDED FORECAST STARTS WITH DEEP TROUGH IN PLACE ALONG
APPALACHIANS. BY MID TO LATE WEEK A LOW IN THE BASE OF THE TROUGH
MOVES OFF TO NE...WITH ANOTHER SHORTWAVE RIGHT BEHIND IT IN BRIEFLY
ZONAL FLOW. COLD FRONT TO STALL AND WASH OUT OVER AREA EARLY NEXT
WEEK...LEAVING BAND OF MOISTURE ACROSS AREA INTO LATE WEEK.
TEMPERATURES NEAR NORMAL BETWEEN NEW E COAST TROUGH AND FLAT RIDGE
TO S.

FCSTID = 07

GSP 71 90 71 88 / 40 30 30 30
AND 72 91 72 89 / 40 30 30 30
CLT 69 89 70 88 / 40 30 30 30
HKY 68 86 68 86 / 40 30 30 30
AVL 66 83 65 83 / 40 30 30 30

.GSP...
GA...NONE.
NC...NONE.
SC...NONE.
Hazardous weather outlook, Aug 14, 4:39 AM EDT, 13 hours 44 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-141045-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
439 AM EDT THU AUG 14 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA...
UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA.

.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 IS NOT ANTICIPATED.

DICARLO

In the hours before

Special weather statement, Aug 14, 6:05 PM EDT, 18 minutes before
NCZ071-082-SCZ009-014-142315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
605 PM EDT THU AUG 14 2003

...THUNDERSTORMS PRODUCING CONTINUOUS LIGHTNING AND TORRENTIAL
RAIN...

AT 600 PM EDT...WEATHER SERVICE RADAR INDICATED A LARGE CLUSTER OF
THUNDERSTORMS EXTENDING FROM STURDIVANTS TO MONROE AND MATHEWS AND
INTO THE WESTERN SUBURBS OF CHARLOTTE. THE STORMS WERE MOVING
SOUTHWEST AT 25 MPH. THESE STORMS WERE PRODUCING AN UNUSUAL AMOUNT OF
CLOUD TO GROUND LIGHTNING....AS WELL AS VERY HEAVY RAIN AND WINDS
GUSTING TO AROUND 40 MPH. IF THE STORMS HOLD TOGETHER...THEY WILL
AFFECT AREAS FROM LAKE WYLIE TO ROCK HILL AND FORT LAWN BETWEEN 630
AND 7 PM.

MCAVOY

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.