A thunderstorm took on supercell characteristics as it moved across the eastern part of Upstate South Carolina. The storm caused some straight-line wind damage but no tornadoes were reported.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GSP wrote it up.
A thunderstorm took on supercell characteristics as it moved across the eastern part of Upstate South Carolina. The storm caused some straight-line wind damage but no tornadoes were reported.
The local office's own words before the first event, 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 the first event at Sep 29, 3:48 PM EST, 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 448 PM EDT SAT SEP 29 2012 .SYNOPSIS... A COLD FRONT AND UPPER LEVEL TROUGH OF LOW PRESSURE WILL REMAIN NEARLY STATIONARY ACROSS THE CAROLINAS INTO SUNDAY. A LOW PRESSURE SYSTEM WILL THEN MOVE OUT OF THE GULF OF MEXICO LATE SUNDAY... PROGRESSING NORTHWARD INTO MONDAY BRINGING UNSETTLED WEATHER FOR THE EARLY PART OF THE WORK WEEK. && .NEAR TERM /THROUGH SUNDAY/... AS OF 435 PM EDT...CURRENTLY HAVE 2 LINES OF CONVECTION MOVING ACROSS THE NORTHERN HALF OF THE CWFA WITH THE SOUTHERNMOST LINE MADE UP OF SOME FAIRLY STRONG CELLS...SOME OF WHICH HAVE BECOME SEVERE OVER THE PAST FEW HOURS. AS DRIER AIR BEGINS TO MAKE ITS WAY IN FROM THE NW...WE EXPECT MOST OF THE TSRA ACTIVITY TO DIE DOWN EARLIER THIS EVENING COMPARED TO YESTERDAY EVENING/NIGHT. CLOUD COVER WILL LIKELY REMAIN BKN TO OVC FOR MOST OF THE SOUTHERN CWFA WITH SKIES SCATTERING OUT TO THE NORTH AFTER 00Z OR SO. PREVIOUS DISCUSSION... ON SUNDAY...MODELS IN GOOD AGREEMENT ON SIGNIFICANT DRYING OF PROFILES ACRS THE CWFA IN DEEP NWLY FLOW. THE SFC FNT SHUD BE TO OUR SOUTH WITH DRY NELY LLVL FLOW ACRS THE AREA. THIS WILL BE A VERY SHORT BREAK IN THE UNSETTLED WX...HOWEVER...AS A LOW PRES SYSTEM DEVELOPS INVOF LWR MS VLY/NW GULF. SOME CIRRUS/CIRROSTRATUS WILL SPREAD IN BY THE AFTN. OVERALL...TEMPS WILL BE NEAR NORMAL. MODELS HAVE BACKED OFF THE TIMING OF GULF MOISTURE/UPGLIDE WORKING BACK INTO THE AREA AHEAD OF THE GULF SYSTEM. MODELS TEND TO BE SLOW WITH ONSET OF PRECIP AHEAD OF CYCLOGENESIS. THE FASTEST MODEL (GFS) SEEMS TO HAVE 700-600 MB FRONTOGENESIS BANDING ACRS NRN GA/SRN UPSTATE BY 00Z MON. WHETHER THIS FORCING WILL BE ABLE TO OVERCOME DRY LLVL AIR BY SUNSET IS UNCERTAIN. SO HAVE JUST SOME LOW-END CHC POPS ENTERING THE SRN FRINGE OF THE CWFA THRU 23Z. && .SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/... AS OF 315 PM SAT...MDLS IN GOOD AGREEMENT ON A DEVELOPING WET CAD SCENARIO FOR THE SHORT RANGE. HOWEVER...THEY DO DIFFER IN THE TIMING OF ONSET AND DEPARTURE. A CLOSED UPPER LOW SITS AND SPINS OVER THE MID SOUTH AS A BERMUDA HIGH STRENGTHENS OFF SHORE. THIS SETS UP A DEEP SLY FLOW OVER THE AREA WITH SHORT WAVES MOVING THRU. AT THE SFC...STRONG LOW ALONG THE GULF COAST MOVES TO THE AL/MS BORDER MONDAY. THE GFS AND ECMWF ARE FASTER WITH THE NORTHWARD MOVEMENT OF THE LOW AND ITS ASSOCIATED MOISTURE AND PRECIP. THE NAM IS SLOWER WHILE THE SREF IS IN THE MIDDLE. WENT WITH A MIDDLE ROAD FOR ONSET WITH LIKELY PRECIP BY MORNING WEST AND CHC EAST. PRECIP THEN SPREADS OVER ALL THE AREA AS CAD STRENGTHENS THRU THE DAY MONDAY. HAVE GONE WITH CAT POP ALL AREAS MONDAY AS IT LOOKS TO BE A WET DAY. THERE WILL BE PLENTY OF ISENTROPIC LIFT OVER THE DEVELOPING CAD DOME. ALSO...THERE IS DECENT QG FORCING AND UPPER DIFFLUENCE WITH THE SYSTEM. HAVE LOWERED HIGHS TUE IN LINE WITH THE BIAS CORRECTED GRIDS AND NAM DUE TO THE PRECIP AND DEVELOPING CAD. SOME INSTABILITY DEVELOPS ON THE SRN EDGE OF THE CWFA AND THE SWRN MTNS...IN LINE WITH A USUAL CAD PATTERN. HAVE INCLUDED THUNDER MENTION THESE AREAS. THE TIMING TRENDS CONTINUE TUE AS THE SFC LOW MOVES INTO THE OH VALLEY AND THE TRAILING COLD FRONT MOVES TOWARD THE AREA FROM THE WEST. THE CAD REMAINS IN PLACE MON NITE BUT BEGINS TO ERODE OF THE FASTER MDLS AND LINGERS ON THE SLOWER TUE. EITHER WAY...CAE POP CONTINUES MON NITE WITH CONTINUED GOOD MOISTURE AND FORCING. THE FASTER MDLS WORK A DRY SLOT INTO THE WRN CWFA BY THE END OF THE DAY TUE. HAVE AGAIN SPLIT THE DIFFERENCE WITH POP AND END UP WITH LIKELY EAST AND CHC WEST BY THE END OF THE DAY. TEMPS SHUD BE A LITTLE WARMER AS CAD ERODES AND PRECIP BECOMES LESS WIDESPREAD. INSTABILITY INCREASES THRU THE DAY AS WELL...SO TREND THE CHARACTER OF PRECIP TO SHOWERS AND THUNDERSTORMS FOR THE AFTERNOON. ALTHOUGH SIGNIFICANT AMOUNTS OF PRECIP ARE POSSIBLE...A CAD SCENARIOS USUALLY KEEPS PRECIP AMOUNTS FROM REACHING EXCESSIVE LEVELS. THAT SAID...WILL HAVE TO KEEP AN EYE OUT TUE AS THE CAD ERODES AND INSTABILITY INCREASES. WILL ALSO HAVE TO WATCH FOR POSSIBLE QLCS STORMS IN THE STRONGLY SHEARED AND WEAKLY UNSTABLE ENVIRONMENT. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... AS OF 330 PM SAT...GENERAL AGREEMENT CONTINUES BETWEEN THE 12Z RUNS OF THE GFS AND ECMWF FOR THE MEDIUM RANGE. A CLOSED UPPER LOW OVER THE MID SOUTH TUE NITE OPENS UP AND MOVES TO THE ERN GREAT LAKES BY WED NITE. THE BERMUDA RIDGE BRIEFLY BUILDS OFF SHORE THU BEFORE A RELATIVELY WEAK SRN STREAM SHORT WAVE MOVES OVER THE AREA FRI. A STRONGER NRN STREAM SHORT WAVE MOVES ACROSS THE NRN TIER OF THE CONUS SAT. AT THE SFC...SEASONAL AND DRY HIGH PRESSURE BUILDS IN BEHIND THE DEPARTING SFC LOW AND ASSOCIATED SFC FRONT. THE HIGH REMAINS CENTERED OVER THE AREA THU...THEN WEAKENS FRI AS A FRONT APPROACHES FROM THE NW. THE GUIDANCE DEVIATES SAT AS THE GFS IS FASTER WITH THE FRONT MOVING OVER THE AREA SAT AND PRECIP DEVELOPING BEHIND THE FRONT. THE ECMWF HAS SLOWED THIS FRONTAL MOVEMENT DOWN BY A FULL DAY. THEREFORE...HAVE GONE WITH LINGERING PRECIP TUE NITE ENDING QUICKLY WED...A DRY FCST THU AND FRI WITH SLIGHT CHC POP FRI NITE AND SAT. TEMPS WILL GENERALLY BE NEAR TO SLIGHTLY ABOVE NORMAL UNTIL SAT WHEN THE FALL SLIGHTLY BELOW NORMAL. && .AVIATION /21Z SATURDAY THROUGH THURSDAY/... AT KCLT...DESPITE OVC100...THE AREA IS DESTABILIZING AHEAD OF AN E-W ORIENTED LINE OF CONVECTION THAT IS SLOWLY DRIFTING SE. SOME OF THIS ACTIVITY IS EXPECTED TO REACH KCLT AFTER 20Z...THEN PUSH OUT OF THE AREA BY AROUND 00Z. A TEMPO GROUP FOR TS STILL LOOKS GOOD. OTHERWISE...VFR WITH LGT WIND...FAVORING A SLY DIR UNTIL THE CONVECTION PASSES BY IN THE 20-22Z TIME FRAME. OVERNIGHT...A FNTL BNDRY WILL SAG SOUTH OF THE AREA...USHERING IN DRIER AIR FROM THE NORTH. SOME OF THE GUIDANCE IS HINTING THAT THE BL WILL REMAIN MOIST ENUF FOR SOME PATCHY FOG AND/OR STRATUS. USUALLY...CONDITIONS STAY VFR BEHIND A BACKDOOR COLD FRONT. SO I DID NOT GO TOO PESSIMISTIC. SUNDAY LOOKS VFR WITH CONTINUED NE WIND. ELSEWHERE...A LINE OF SHRA/TSRA TO AFFECT KAVL AND KHKY WITHIN NEXT HOUR. BEHIND THE LINE...A SCATTERED SHRA AND TSRA WILL CONTINUE TO DEVELOP THRU REST OF AFTN. THE UPSTATE LOOKS LESS LIKELY TO SEE TS ACTIVITY...BUT STILL DECENT COVERAGE OF -RA/SHRA. PRECIP WILL WANE FAIRLY QUICKLY THIS EVENING...AS THE FNTL BNDRY SAGS SOUTH OF THE AREA AND DRIER AIR WORKS IN FROM THE NORTH. GUIDANCE SHOWING SOME LINGERING BL MOISTURE...SO HAVE SOME THREAT FOR PATCHY FOG/STRATUS WHERE MIXING IS AT A MINIMUM. FLOW WILL BE UP THE FRENCH BROAD VALLEY...SO DIFFICULT TO SAY HOW MUCH IF ANY RESTRICTIONS AT KAVL. VFR CONDITIONS ARE EXPECTED SUNDAY WITH LIGHT NELY FLOW THRU MIDDAY. OUTLOOK...A FAIRLY STRONG LOW PRESSURE SYSTEM WILL DEVELOP ACROSS THE DEEP SOUTH LATE IN THE WEEKEND INTO MONDAY. MOISTURE IS EXPECTED TO QUICKLY RETURN SUNDAY NIGHT...WITH PERIODS OF LOW CEILINGS AND RAINFALL LIKELY ACROSS THE REGION INTO MID WEEK. AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)... WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...PAT NEAR TERM...JPT SHORT TERM...RWH LONG TERM...RWH AVIATION...JPT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 343 PM EDT SAT SEP 29 2012 GAZ010-017-018-026-028-029-NCZ068>072-082-507>510-SCZ001>014-019- 301945- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-CLEVELAND-LINCOLN- GASTON-MECKLENBURG-CABARRUS-UNION NC-RUTHERFORD MOUNTAINS- GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 343 PM EDT SAT SEP 29 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE SOUTHERN FOOTHILLS AND PIEDMONT OF NORTH CAROLINA...AND MUCH OF THE UPSTATE AND NORTHEAST GEORGIA THROUGH THIS EVENING. SOME OF THE THUNDERSTORMS WILL BECOME SEVERE PRODUCING DAMAGING WIND GUSTS AND POSSIBLY HAIL. THE OTHER MAIN THREAT AREA WILL BE ALONG AND SOUTH OF INTERSTATE 85 IN NORTH CAROLINA AND THE EASTERN UPSTATE. THE STORMS SHOULD TAPER OFF AND MOVE TO THE EAST LATE THIS EVENING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE. NCZ033-035>037-048>053-056>059-062>065-501>506-301945- AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD- BUNCOMBE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-MACON- SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS- GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS- EASTERN MCDOWELL- 343 PM EDT SAT SEP 29 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND WESTERN NORTH CAROLINA. .DAY ONE...TONIGHT. SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE MOUNTAINS...NORTHERN FOOTHILLS...AND NORTHWEST PIEDMONT OF NORTH CAROLINA THROUGH THIS EVENING. THE MAIN THREAT FROM THESE STORMS WILL BE CLOUD TO GROUND LIGHTNING. THE STORMS SHOULD TAPER OFF AND MOVE TO THE EAST LATE THIS EVENING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
311 PM EDT SAT SEP 29 2012
NCZ056-065-068>070-504-507>510-292000-
CATAWBA-CLEVELAND-EASTERN POLK-GASTON-GREATER BURKE-GREATER
RUTHERFORD-HENDERSON-LINCOLN-POLK MOUNTAINS-RUTHERFORD MOUNTAINS-
311 PM EDT SAT SEP 29 2012
...STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN HENDERSON...NORTHERN
CLEVELAND...NORTHWESTERN GASTON...POLK...RUTHERFORD...SOUTHERN
BURKE...SOUTHWESTERN CATAWBA AND WESTERN LINCOLN COUNTIES THROUGH 400
PM EDT...
AT 311 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES SOUTHEAST OF
PLEASANT GROVE TO 7 MILES SOUTHWEST OF THERMAL CITY TO 3 MILES EAST
OF MOUNTAIN HOME...MOVING SOUTHEAST AT 15 MPH.
THESE STORMS WILL IMPACT LOCATIONS NEAR...
CASAR...
LAKE ADGER...
RUTHERFORDTON...
VALE...
BOSTIC...
FOREST CITY...
PENNY SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.
LAT...LON 3538 8127 3520 8188 3518 8200 3520 8228
3518 8237 3521 8239 3519 8243 3543 8261
3544 8255 3542 8254 3544 8253 3548 8228
3546 8225 3548 8223 3554 8198 3552 8197
3554 8185 3559 8182 3568 8150
HGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
355 PM EDT SAT SEP 29 2012
NCZ072-292030-
CABARRUS-
355 PM EDT SAT SEP 29 2012
...STRONG THUNDERSTORMS WILL AFFECT CABARRUS COUNTY THROUGH 430 PM
EDT...
AT 356 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF
ROCKWELL TO 3 MILES SOUTHWEST OF MOUNT PLEASANT TO HARRISBURG...
MOVING EAST AT 20 MPH.
THESE STORMS WILL IMPACT LOCATIONS NEAR...
MOUNT PLEASANT...
MIDLAND...
PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.
LAT...LON 3522 8048 3528 8067 3533 8069 3536 8071
3540 8056 3550 8054 3550 8030 3549 8030
HGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
410 PM EDT SAT SEP 29 2012
SCZ007-292045-
SPARTANBURG-
410 PM EDT SAT SEP 29 2012
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SPARTANBURG COUNTY
THROUGH 445 PM EDT...
AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CAMPOBELLO...OR 12 MILES SOUTHEAST OF
COLUMBUS...MOVING EAST AT 20 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
BOILING SPRINGS SC...
COWPENS...
PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.
LAT...LON 3488 8183 3503 8222 3519 8215 3519 8211
3512 8184 3506 8181 3504 8181 3503 8179
3500 8178
HGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
426 PM EDT SAT SEP 29 2012
NCZ068-508-SCZ007-008-292100-
CHEROKEE-CLEVELAND-GREATER RUTHERFORD-SPARTANBURG-
426 PM EDT SAT SEP 29 2012
...STRONG THUNDERSTORMS WILL AFFECT CHEROKEE...NORTHEASTERN
SPARTANBURG...SOUTHEASTERN RUTHERFORD AND SOUTHWESTERN CLEVELAND
COUNTIES THROUGH 500 PM EDT...
AT 426 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM CLIFFSIDE TO CHESNEE
TO 3 MILES NORTHWEST OF MAYO...MOVING SOUTHEAST AT 20 MPH.
THESE STORMS WILL IMPACT LOCATIONS NEAR...
MAYO...
BOILING SPRINGS NC...
THICKETTY...
EARL...
PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.
LAT...LON 3520 8145 3503 8152 3491 8166 3507 8204
3519 8191 3536 8184
HGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
431 PM EDT SAT SEP 29 2012
SCZ007-292100-
SPARTANBURG-
431 PM EDT SAT SEP 29 2012
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL SPARTANBURG COUNTY
THROUGH 500 PM EDT...
AT 431 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR BOILING SPRINGS SC...OR 6 MILES NORTH OF
SPARTANBURG...MOVING SOUTHEAST AT 20 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
MAYO...
SPARTANBURG...
COWPENS...
PACOLET...
PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.
LAT...LON 3498 8209 3514 8199 3508 8181 3504 8181
3503 8179 3494 8176 3491 8171 3483 8179
HGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
455 PM EDT SAT SEP 29 2012
SCZ008-009-292130-
CHEROKEE-YORK-
455 PM EDT SAT SEP 29 2012
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CHEROKEE AND
SOUTHWESTERN YORK COUNTIES THROUGH 530 PM EDT...
AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 2 MILES EAST OF THICKETTY...OR 4 MILES SOUTHWEST
OF GAFFNEY...MOVING SOUTHEAST AT 25 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
HICKORY GROVE...
DIME SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.
LAT...LON 3484 8146 3487 8149 3487 8153 3488 8153
3487 8154 3489 8158 3488 8161 3495 8176
3501 8178 3513 8170 3499 8129 3482 8139
3482 8147
HGThe Greer radar (KGSP), 54 km away, was scanning. The volume nearest the first event began at 21:13 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were blown down on highway 18.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2012Every state in 2012This day in weather historyWarnings in South Carolina, September 2012
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 414441.