Alert archive / North Carolina / Flash Flood Warnings in 2005

Flash Flood Warning 62, NWS Greenville-Spartanburg, SC

July 20, 2005Mecklenburg County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Jul 20, 2005, 6:29 PM EDT for Mecklenburg 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
Jul 20, 2005, 6:29 PM EDT (22:29 UTC)
Expired
Jul 20, 2005, 9:30 PM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

County Mecklenburg County, NC

The radar

The Greer radar (KGSP), 129 km from the middle of the area, began a volume at 22:29 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, 10.5 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2005-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 209 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 2005-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 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
209 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1097 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
4 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 202231
FFWGSP
NCC119-210130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
629 PM EDT WED JUL 20 2005

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

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

* UNTIL 930 PM EDT

* AT 629 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  NEARLY STATIONARY THUNDERSTORM JUST SOUTH OF CENTER CITY 
  CHARLOTTE. THIS THUNDERSTORM WAS PRODUCING RAINFALL AT RATES IN
  EXCESS OF TWO INCHES PER HOUR...AND FLASH FLOODING IS EXPECTED TO
  DEVELOP.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO UNC
  CHARLOTTE...PAW CREEK...HUNTERSVILLE...EASTLAND MALL...CHARLOTTE
  DOUGLAS INTL AIRPORT AND CENTER CITY CHARLOTTE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. EVEN MODERN SPORT UTILITY VEHICLES CANNOT BE SAFELY
DRIVEN THROUGH FLOOD WATERS.

LAT...LON 3514 8099 3504 8085 3521 8056 3551 8092

$$
JAT/HG
2 follow-up statements
000 
WGUS72 KGSP 202345
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
744 PM EDT WED JUL 20 2005

NCC119-210130-
MECKLENBURG NC-
744 PM EDT WED JUL 20 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 930 PM EDT FOR MECKLENBURG
COUNTY...

AT 738 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ONLY LIGHT SHOWERS OVER THE WARNED AREA. RUNOFF FROM EARLIER 
RAINFALL WILL CONTINUE...AND WATER LEVELS IN CREEKS AND STREAMS ARE 
EXPECTED TO RISE.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CENTER CITY 
CHARLOTTE.

LAT...LON 3514 8099 3504 8085 3521 8056 3551 8092

$$
07
000 
WGUS72 KGSP 210051
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
849 PM EDT WED JUL 20 2005

NCC119-210059-
MECKLENBURG NC-
849 PM EDT WED JUL 20 2005

...THE FLASH FLOOD WARNING FOR MECKLENBURG COUNTY IS CANCELLED...

AT 849 PM...NATIONAL WEATHER SERVICE RADAR INDICATED THAT ALL THE 
HEAVY RAIN PRODUCING THUNDERSTORMS HAD DISSIPATED ACROSS MECKLENBURG 
COUNTY. NO REPORTS OF FLASH FLOODING HAVE BEEN RECEIVED...SO THE 
WARNING HAS BEEN CANCELLED.

LAT...LON 3514 8099 3504 8085 3521 8056 3551 8092

$$
HG

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 Jul 20, 2:57 PM EDT, 3 hours 32 minutes earlier.

Area forecast discussion, Jul 20, 2:57 PM EDT, 3 hours 32 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
257 PM EDT WED JUL 20 2005

.SHORT TERM (TONIGHT THROUGH FRIDAY NIGHT)...
RIDGETOPS PROVIDING LOCATION FOR CONVECTIVE INITIATION THIS
AFTERNOON. CELLS MOVING VERY SLOWLY WITH LIGHT STEERING FLOW IN THE
MID LEVELS. ISOLATED FLASH FLOODING POSSIBLE AGAIN LATE THIS
AFTERNOON/EARLY THIS EVENING. CANNOT RULE OUT A SEVERE STORM OR
TWO...BUT SVR THREAT LOWER THAN FLOODING CHC. HAVE GONE WITH EARLY
LIKELY POP NC FOOTHILLS/NC MTNS SOUTH AND WEST OF FRENCH BROAD...AND
OVER SC/GA MTNS. SCT POP ELSEWHERE. WILL SEE SOME FOG
OVERNIGHT...BUT BEST CHC FOR DENSE FOG WILL BE MTN VALLEYS.

UPPER LEVEL ANTICYCLONE OVER THE SOUTHEAST TODAY WILL YIELD TO
SLIGHT LOWERING OF UPPER HEIGHTS THURSDAY...RESULTING IN A
DIFFLUENT NORTHWEST...BUT STILL PRETTY WEAK FLOW THROUGHOUT
THE COLUMN. ALL IN ALL...DOUBT THERE WILL BE MUCH CHANGE TO OUR
PERSISTENT SENSIBLE WEATHER...A CONTINUED THREAT OF SCATTERED
DIURNAL DEEP CONVECTIVE DEVELOPMENT ALONG WITH ANOTHER DAY OF
FTHL/PIEDMONT MAXES IN THE LOWER 90S AND AFTERNOON HEAT INDEX
VALUES NEAR 100.

IT CONTINUES TO REMAIN UNCERTAIN WITH RESPECT TO MCS EVOLUTION
THURSDAY NIGHT AND/OR FRIDAY BUT THE OVERALL PATTERN WOULD STILL
SUPPORT THE POTENTIAL FOR ORGANIZED TSTMS LATER THURSDAY NIGHT OR
FRIDAY MORNING...WHETHER IT MAKES IT THIS FAR SOUTHEAST IS STILL
DEBATABLE. NOT THAT IT IS CORRECT...BUT THE 12 UTC GFS IS NOW
SHOWING STRONG SIGNALS OF LINEAR DEEP CONVECTION MOVING INTO THE
MTNS FRIDAY MORNING AND QUICKLY SWEEPING ACRS THE CWFA BY THE
AFTERNOON. THERE IS EVEN SOME SUPPORT ALBEIT WEAKER ON THE 12 UTC
NAM WITH S/WV PASSAGE DURING THIS TIMEFRAME...SO WILL CONTINUE TO
ADVERTISE POPS OUTSIDE OF TYPICAL DIURNAL FOR THIS PERIOD. AS IN
EARLIER RUNS...THE LATEST GFS CONTINUES TO BE SLOWER/DEEPER WITH
MAIN S/WV PASSAGE...WHICH DOES NOT OCCUR UNTIL LATER FRIDAY NIGHT.
TO ACCOUNT FOR THIS...PLAN ON LEAVING CHC POPS AS IS UNTIL 06Z
SATURDAY.
&&

.LONG TERM (SATURDAY THROUGH WEDNESDAY)...
CWFA LOOKS TO COME UNDER S/WV RIDGING SATURDAY WITH DEEPER RH
DISPLACED OFF TO OUR SOUTH. IT WILL CONTINUE TO HEAT UP WITH
FTHL/PIEDMONT MAXES IN THE MID 90S. WITH THE ABSENCE OF THE
BETTER RH AND LARGER SCALE SUPPORT...PLAN ON CONTINUING DIURNAL
CHC POPS FOR JUST THE MTNS. LARGE UPPER RIDGING TO BUILD EVEN
FURTHER EAST INTO THE CWFA SUNDAY AND MONDAY FOR A FEW MORE HOT
DAYS. AGAIN...ANY DIURNAL DEEP CONVECTIVE CHANCE WOULD LOOK TO BE
ISOLATED TO THE HIGHER TERRAIN IF NOT COMPLETELY SUPPRESSED. WE WILL
HAVE TO MONITOR DEWPOINT TRENDS SATURDAY THROUGH MONDAY FOR THE
POTENTIAL FOR HEAT ADVISORY CRITERIA BEING REACHED. PLAN ON SLIGHT
CHANCE OR LOW CHANCE POPS FOR DAYS 6 AND 7 WITH TEMPS HEADING BACK
TOWARD CLIMO AS UPPER RIDGING BREAKS DOWN.
&&

.AVIATION...
TAFS START OFF WITH VCTS AT ALL LOCATIONS XCPT KCLT WHERE TSRA STILL
QUITE A DISTANCE AWAY. DO HAVE CB MENTION THERE. WILL AMD IF/WHEN
CELLS APPROACH AIRFIELDS. GUIDANCE NOT CONSISTENT WITH MVFR FOG
CHANCE OVERNIGHT...XCPT AT KAVL WHERE IFR FOG/CIGS LOOK LIKELY. DID
INCLUDE MVFR FOG AT KHKY/KAND WHERE IT IS FAVORED ACCORDING TO
CLIMO. RESTRICTIONS END QUICKLY...ABOUT 13Z...THU MORNING. VFR FOR
THE REST OF THE TAF PERIOD.
&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.
&&

SHORT TERM...RWH/CSH
LONG TERM...CSH
AVIATION...RWH
Hazardous weather outlook, Jul 20, 6:31 AM EDT, 11 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
631 AM EDT WED JUL 20 2005

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-
SCZ001>014-019-211045-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-CALDWELL-
ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-MCDOWELL-BURKE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-
MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-POLK-RUTHERFORD-
CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-
GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-
CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-
GREENWOOD-
631 AM EDT WED JUL 20 2005

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL DEVELOP ONCE
AGAIN ACROSS THE AREA THIS AFTERNOON. THERE WILL BE A THREAT FOR
ISOLATED FLASH FLOODING WITH THESE STORMS...ESPECIALLY OVER THE
MOUNTAINS. PLEASE SEE CAESPSGSP FOR MORE INFORMATION. ONE OR TWO
OF TODAYS STORMS COULD ALSO PRODUCE DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WILL
CONTINUE THROUGH FRIDAY. COVERAGE OF SHOWERS AND THUNDERSTORMS
SHOULD DECREASE FOR THE WEEKEND AND EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

LANE

In the hours before

Local storm report, Jul 20, 5:30 PM EDT, 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
530 PM EDT WED JUL 20 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0525 PM     FLASH FLOOD      5 SSE TUCKASEGEE        35.20N 83.09W
07/20/2005                   JACKSON            NC   COUNTY OFFICIAL

            COUNTY REPORTS CHARLEY CREEK ROAD FLOODED NEAR HIGHWAY
            281.

&&

HG
Special weather statement, Jul 20, 6:25 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
625 PM EDT WED JUL 20 2005

GAZ028-202330-
HART-
INCLUDING THE CITY OF...HARTWELL
625 PM EDT WED JUL 20 2005

...STRONG THUNDERSTORMS WITH HEAVY RAINFALL TO AFFECT HART COUNTY
THROUGH 730 PM EDT...

AT 624 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A CLUSTER OF
STRONG THUNDERSTORMS STRETCHING FROM HARTWELL TO NEAR ROYSTON...
MOVING SOUTHEAST AT 15 MPH. THESE THUNDERSTORMS WERE PRODUCING
RAINFALL AT RATES IN EXCESS OF AN INCH PER HOUR...AND ADDITIONAL
HEAVY RAINFALL WILL LIKELY AFFECT LOCATIONS OVER THE SOUTHERN END OF
THE COUNTY THROUGH 730 PM. THESE THUNDERSTORMS WILL ALSO PRODUCE WIND
GUSTS OF 35 MPH AND FREQUENT LIGHTNING.

HG

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 20, 5:28 PM EDTFlash Flood WarningGSPJackson3 hr

Nearby

Flash Flood Warnings in North Carolina, 2005Every flash flood warning in 2005

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.