Alert archive / North Carolina / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 22, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 22, 2005, 11:55 AM EDT for Graham County, Swain County, North Carolina. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 2005, 11:55 AM EDT (15:55 UTC)
- Expired
- Apr 22, 2005, 1:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
Counties Graham County, NC, Swain County, NC
The radar
The Knoxville radar (KMRX), 92 km from the middle of the area, began a volume at 15:55 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 severe thunderstorm 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 3.9 hours before the alert went out and 235 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
- 342 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 856 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS52 KGSP 221556
SVRGSP
NCC075-173-221700-
/O.NEW.KGSP.SV.W.0022.050422T1555Z-050422T1700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1155 AM EDT FRI APR 22 2005
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SWAIN COUNTY IN WESTERN NORTH CAROLINA
GRAHAM COUNTY IN WESTERN NORTH CAROLINA
* UNTIL 100 PM EDT
* AT 1149 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 22 MILES NORTH OF TAPOCO TO 24 MILES SOUTHWEST OF TAPOCO...OR
ALONG A LINE EXTENDING FROM MARYVILLE TO 11 MILES NORTHWEST OF
MURPHY...AND MOVING EAST AT 25 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
TAPOCO BY 1210 PM EDT
FONTANA VILLAGE BY 1230 PM EDT
ROBBINSVILLE BY 1235 PM EDT
STECOAH BY 1245 PM EDT
PEOPLE IN THE PATH OF THIS LINE OF SEVERE THUNDERSTORMS SHOULD BE
ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND
LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM.
LAT...LON 3543 8401 3556 8376 3557 8360 3555 8358
3555 8351 3557 8349 3530 8348 3528 8366
3525 8373 3525 8384 3522 8392 3523 8399
3529 8403
$$
WAJ/LGL2 follow-up statements
000
WWUS52 KGSP 221626
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1226 PM EDT FRI APR 22 2005
NCC075-173-221700-
/O.CON.KGSP.SV.W.0022.000000T0000Z-050422T1700Z/
SWAIN NC-GRAHAM NC-
1226 PM EDT FRI APR 22 2005
...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 100 PM EDT FOR
GRAHAM AND SWAIN COUNTIES...
AT 1224 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 24 MILES NORTH OF FONTANA VILLAGE TO LUADA...OR ALONG
A LINE EXTENDING FROM 11 MILES SOUTHWEST OF SEVIERVILLE TO BRYSON
CITY...MOVING EAST AT 25 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
WESSER AND ALMOND BY 1210 PM EDT
LUADA BY 1220 PM EDT
LAT...LON 3543 8401 3556 8376 3557 8360 3555 8358
3555 8351 3557 8349 3530 8348 3528 8366
3525 8373 3525 8384 3522 8392 3523 8399
3529 8403
$$
JONES000
WWUS52 KGSP 221650
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1248 PM EDT FRI APR 22 2005
NCC075-173-221658-
/O.CAN.KGSP.SV.W.0022.000000T0000Z-050422T1700Z/
SWAIN NC-GRAHAM NC-
1248 PM EDT FRI APR 22 2005
...THE SEVERE THUNDERSTORM WARNING FOR GRAHAM AND WESTERN SWAIN
COUNTIES IS CANCELED...
THE LINE OF THUNDERSTORMS MOVING FROM GRAHAM COUNTY AND THROUGH
SWAIN COUNTY HAS WEAKENED BECAUSE OF INTERACTION WITH HIGH TERRAIN.
THE STORMS WERE LIKELY STRONG ENOUGH TO CAUSE SOME WIND DAMAGE IN
THE WESTERN PARTS OF THOSE COUNTIES...BUT THE THREAT OF SEVERE
WEATHER HAS DIMINISHED. ADDITIONAL SEVERE STORMS COULD OCCUR LATER.
LAT...LON 3543 8401 3556 8376 3557 8360 3555 8358
3555 8351 3557 8349 3530 8348 3528 8366
3525 8373 3525 8384 3522 8392 3523 8399
3529 8403
$$
JONESWhat forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 22, 10:24 AM EDT, 1 hour 31 minutes earlier.
Area forecast discussion, Apr 22, 10:24 AM EDT, 1 hour 31 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1024 AM EDT FRI APR 22 2005 .SHORT TERM (REST OF TODAY)... MCS OVER ERN TN SHOULD CONTINUE TO TRACK E-SE THROUGH THE AFTN HRS ON THE LEADING EDGE OF A MID LEVEL DRY SLOT. 1200 UTC OHX SOUNDING WAS INTERESTING IN THAT IT HAD A DEEP LAYER OF 30-40KT WNDS BLO H5. WNDS FROM H5 AND UP WERE LIGHTER. LAPSE RATES ON THE SOUNDING WERE QUITE STEEP FROM THE SFC TO 600 MB...BUT MORE MOIST ADIABATIC ABOVE THAT. CAPE VALUES WERE RUNNING AROUND 1500 J/JG FOR A DWPT OF 60 AND A TEMP OF 74. MID LEVEL DRY SLOT CAN BE SEEN WORKING INTO WRN TN ATTM ON WATER VAPOR IMAGERY. AS THE DRY SLOT KICKS INTO THIS AIRMASS...EXPECT THE MCS TO OUR WEST TO CONTINUE AND PERHAPS EVEN INTENSITY A LITTLE. HAVE INCREASED POPS TO CATEGORICAL AHEAD OF THE MCS...FOLLOWING FAIRLY CLOSE TO THE 0600 ETA/S H7 OMEGA FIELD AS A GUIDE. SCATTERED DAMAGING WIND AND LARGE HAIL REPORTS WL BE POSSIBLE WITH THIS MCS...PARTICULARLY AS IT MOVES EAST OF THE MTNS INTO AREAS THAT HAVE SEEN SUN THROUGH THE MORNING HRS. WL THEREFORE CONTINUE THE MENTION OF SOME SEVERE STORMS IN THE GRIDS AND ZONES. HOPEFULLY WEAK BACK DOOR FRONT WL MIX OUT AS ADVERTISED BY THE ETA. IF IT LINGERS...THE LLVL TURNING COUPLED WITH THE STEEP LLVL LAPSE RATES AND DENSE CAPE COULD RESULT IN LOCALIZED THREAT OF BRIEF SPIN-UP TORNADOES IMMEDIATELY ALONG THE BOUNDARY. && .PREVIOUS DISCUSSION... (ISSUED 350 AM EDT FRI APR 22 2005) SHORT TERM (TODAY THROUGH SUNDAY)... A WARM FRONT STRETCHING EAST TO WEST ACROSS NORTH CAROLINA THIS MORNING WILL MOVE NORTH OF THE REGION TODAY TO LEAVE THE AREA IN AN INCREASINGLY UNSTABLE WARM SECTOR. UPPER LEVEL FORCING WILL INCREASE THROUGHOUT THE DAY...WITH FAVORABLE UPPER DIVERGENCE EXPECTED AFTER 18Z...AND THEN 850 TO 500 MB DPVA ARRIVES TOWARD 00Z AS THE MIDWEST CLOSED LOW BEGINS TO OPEN AND PHASE IN. SURFACE DEWPOINTS BEGIN THE DAY IN THE 50S...WITH A GRADUAL INCREASE EXPECTED AS SW FLOW IMPROVES. WARM SECTOR CONVECTION SHOULD THUS INCREASE THROUGH THE DAY AS CAPES REACH 1000+ J/KG WITH LI OF MINUS 2 OR BETTER. WET BULB ZERO OF 9 KFT AGL ALONG WITH MID LEVEL DRY AIR PRODUCING 15 DEGREE K EQUIVALENT POTENTIAL TEMPERATURE LAPSE SUPPORTS POSSIBLE HAIL/WIND THREAT THIS AFTERNOON AND EARLY EVENING. A SECOND ROUND OF CONVECTION IS THEN LIKELY JUST AHEAD OF THE COLD FRONT...WITH SHEAR VALUES INCREASING AS 40 KT 850 MB JET ARRIVES BY MIDNIGHT...BUT WITH DIMINISHING SFC BASED INSTABILITY. CONVECTIVE MODE MAY SHIFT FROM WIND AND HAIL THREAT THIS AFTN TO SHALLOW SHEARED CONVECTION WITH LINEAR FEATURES AND ISOLD TORNADO THREAT LATER THIS EVENING. FROPA EARLY SATURDAY MORNING WILL PRODUCE GENERALLY FALLING TEMPERATURES THROUGH THE DAY ON SATURDAY...WITH SNOW LEVELS GRADUALLY DROPPING TO 4000 FT MSL BY NOON SATURDAY...AND DIPPING INTO THE LOWER MOUNTAIN VALLEYS BY MIDNIGHT SATURDAY NIGHT. BEST PERIOD OF NW FLOW MOISTURE SHOULD YIELD SOME LIGHT ACCUMULATING SNOWFALL FROM PM SAT THROUGH AM SUNDAY...WITH 1 TO 2 INCHES LIKELY AT THE HIGHER ELEVATIONS. WARM GROUND TEMPERATURES MAY MAKE ACCUMULATIONS HARD TO COME BY IN THE LOWER VALLEYS. WINDS WILL LIKELY GUST INTO THE 40S DURING THE BEST COLD ADVECTION...AND FREEZING TEMPERATURES SHOULD BE FAIRLY WIDESPREAD. WILL ISSUE SPS TO ADDRESS THE VARIETY OF WINTER WX CONCERNS. LONG TERM (SUNDAY NIGHT THROUGH THURSDAY)... ADDITIONAL SHORTWAVE ENERGY WILL DIG SOUTHWARD ON THE BACK SIDE OF THE SAME ONTARIO VORTEX THAT IS PRODUCING THE WEATHER IN THE SHORT RANGE. MOISTURE AND PRECIPITATION AHEAD OF THIS NEXT DIGGING SYSTEM IS SLATED MAINLY FOR TUESDAY...BUT TIMING CONCERNS WILL REQUIRE STRETCHING CHC POPS INTO WED PER PREVIOUS FORECAST. TEMPERATURES WILL SLOWLY REBOUND THROUGH THE LATE WEEK AS A SOUTHEAST RIDGE RECOVERS. AVIATION... PERIODS OF IFR FOG WILL CONTINUE AT KAVL UNTIL SUNRISE. LOW PRESSURE OVER THE PLAINS WILL DEEPEN AND TRACK EAST ALONG A STALLED FRONT. AS THE DEEPENING LOW APPROACHES...THE PRESSURE GRADIENT WILL INCREASE OVER THE WESTERN CAROLINAS. BY MID MORNING...ALL TERMINALS SHOULD SEE A DECENT SW WIND (SOUTH AT KAVL). WINDS WILL BECOME GUSTY AS THE MIXING HEIGHT INCREASES IN THE AFTERNOON. TEMPERATURES WILL CLIMB INTO THE MID TO UPPER 70S WITH DWPTS IN THE MID 50S OR BETTER. BY LATE THIS AFTERNOON...CAPES ARE EXPECTED TO BUILD TO 900-1500 J/KG WITH VERY LITTLE CIN. ENOUGH FORCING TO TRIGGER DEEP CONVECTION MAY ARRIVE THIS AFTERNOON AS ONE IN A SERIES OF VORTS PASS OVER THE REGION. WILL HANDLE WITH A LATE AFTERNOON/EARLY EVENING TEMPO FOR TSRA AT ALL TERMINALS. ANOTHER WAVE OF TS IS EXPECTED WITH THE PASSAGE OF THE FRONT AFTER 0Z SAT. AT THIS POINT...WILL LIMIT MENTION OF TS AFTER 0Z SAT TO KAND. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SHORT TERM...MCAVOY
Hazardous weather outlook, Apr 22, 5:55 AM EDT, 6 hours before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 555 AM EDT FRI APR 22 2005 GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-240955- ABBEVILLE SC-ALEXANDER NC-ANDERSON SC-AVERY NC-BUNCOMBE NC-BURKE NC- CABARRUS NC-CALDWELL NC-CATAWBA NC-CHEROKEE SC-CHESTER SC- CLEVELAND NC-DAVIE NC-ELBERT GA-FRANKLIN GA-GASTON NC-GRAHAM NC- GREATER GREENVILLE SC-GREATER OCONEE SC-GREATER PICKENS SC- GREENVILLE MOUNTAINS SC-GREENWOOD SC-HABERSHAM GA-HART GA-HAYWOOD NC- HENDERSON NC-IREDELL NC-LAURENS SC-LINCOLN NC-MACON NC-MADISON NC- MCDOWELL NC-MECKLENBURG NC-MITCHELL NC-NORTHERN JACKSON NC- OCONEE MOUNTAINS SC-PICKENS MOUNTAINS SC-POLK NC-RABUN GA-ROWAN NC- RUTHERFORD NC-SOUTHERN JACKSON NC-SPARTANBURG SC-STEPHENS GA- SWAIN NC-TRANSYLVANIA NC-UNION SC-UNION NC-YANCEY NC-YORK SC- 555 AM EDT FRI APR 22 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA... UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA. .DAY ONE... VERY WINDY CONDITIONS WILL DEVELOP BY AFTERNOON ACROSS THE NORTH CAROLINA MOUNTAINS...WITH WINDY CONDITIONS EXPECTED ACROSS THE REMAINDER OF THE WESTERN CAROLINAS AND NORTHEAST GEORGIA. NORTHWEST WINDS OF 25 TO 35 MPH...WITH GUSTS TO 45 MPH...ARE EXPECTED ACROSS THE NORTH CAROLINA MOUNTAINS FROM NOON TODAY THROUGH NOON SUNDAY. THE STRONG NORTHWEST FLOW WILL ALSO USHER IN VERY COLD TEMPERATURES...WITH FREEZING LOWS LIKELY TONIGHT ACROSS THE NORTH CAROLINA MOUNTAINS...THE NORTHERN NORTH CAROLINA FOOTHILLS...AND THE GEORGIA AND UPSTATE SOUTH CAROLINA MOUNTAINS FROM RABUN COUNTY TO NORTHERN GREENVILLE COUNTY. FOR FURTHER DETAILS ON THE WIND AND FREEZE THREAT...PLEASE SEE THE LATEST URGENT WEATHER MESSAGE...NPWGSP...FROM THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG. THE NORTHWEST WINDS WILL ALSO PUSH ABUNDANT LOW LEVEL MOISTURE INTO THE WESTERN SLOPES OF THE NORTH CAROLINA MOUNTAINS LATE TODAY THROUGH LATE SUNDAY. ACCUMULATING SNOWFALL IS EXPECTED...WITH 1 TO 2 INCHES POSSIBLE NEAR THE SMOKY MOUNTAINS...AND 1 TO 3 INCHES POSSIBLE IN NORTHERN MOUNTAIN LOCATIONS. FOR FURTHER DETAILS...SEE THE LATEST URGENT WINTER WEATHER MESSAGE...WSWGSP...FROM THE NATIONAL WEATHER SERVICE. .DAYS TWO THROUGH SEVEN... FREEZING TEMPERATURES WILL BE POSSIBLE AGAIN ON SUNDAY NIGHT...AND PIEDMONT LOCATIONS MAY BE AT RISK AS WELL AS THE MOUNTAINS. TEMPERATURES THEN RECOVER THROUGH MID WEEK...AS ANOTHER STRONG STORM SYSTEM DEVELOPS IN THE PLAINS. SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS THE REGION FROM TUESDAY INTO WEDNESDAY AS THIS SYSTEM MOVES EAST. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. GERAPETRITIS
In the hours before
Special weather statement, Apr 22, 11:33 AM EDT, 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1133 AM EDT FRI APR 22 2005 GAZ010-017-018-026-NCZ051-052-058-059-062>064-SCZ001-002-004-005- 221630- FRANKLIN GA-GRAHAM NC-GREATER OCONEE SC-GREATER PICKENS SC- HABERSHAM GA-HAYWOOD NC-MACON NC-NORTHERN JACKSON NC- OCONEE MOUNTAINS SC-PICKENS MOUNTAINS SC-RABUN GA- SOUTHERN JACKSON NC-STEPHENS GA-SWAIN NC-TRANSYLVANIA NC- 1133 AM EDT FRI APR 22 2005 ...STRONG THUNDERSTORMS DEVELOPING RAPIDLY ACROSS NORTHEAST GEORGIA AND WESTERN NORTH CAROLINA... AT 1130 AM EDT...WEATHER RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING RAPIDLY WEST OF CLAYTON GEORGIA. THESE STORMS LIKELY ALREADY HAVE HAIL REACHING THE SURFACE. WIDESPREAD STORMS WERE ABOUT TO MOVE INTO THE WESTERN NORTH CAROLINA MOUNTAINS...AND DEVELOPING ACTIVITY WILL SOON MOVE INTO OCONEE COUNTY SOUTH CAROLINA. SOME OF THESE STORMS WILL LIKELY BECOMING SEVERE...WITH LARGE HAIL AND DAMAGING WINDS. LISTEN TO NOAA ALL HAZARDS WEATHER RADIO OR YOUR FAVORITE MEDIA SOURCE FOR LATER STATEMENTS AND WARNINGS. JONES
Local storm report, Apr 22, 11:50 AM EDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1150 AM EDT FRI APR 22 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1140 AM HAIL 10 W CLAYTON 34.88N 83.58W
04/22/2005 0.50 INCH RABUN GA TRAINED SPOTTER
PEA TO MARBLE HAIL FELL FOR SEVERAL MINUTES
&&
JONESNearby
Severe Thunderstorm Warnings in North Carolina, 2005Every severe thunderstorm 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.