South Carolina, 2015

Flash Flood and Flood in South Carolina, April 19 to 20, 2015

April 19 to 20, 2015 · NWS GSP · 3 events in 2 counties and zones

Numerous heavy rain showers and thunderstorms moved across the South Carolina Piedmont during the afternoon and evening in association with a warm front. This was after a round of moderate to heavy rain moved across the area early in the day, producing up to 2 inches of rain.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$11,000
Crop damage
None recorded
Events
3

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.

What happened

The episode as NWS GSP wrote it up.

Numerous heavy rain showers and thunderstorms moved across the South Carolina Piedmont during the afternoon and evening in association with a warm front. This was after a round of moderate to heavy rain moved across the area early in the day, producing up to 2 inches of rain. A brief severe thunderstorm affected part of Greenwood County during the afternoon, while a quick inch of additional rainfall resulted in flash flooding across portions of York County during the evening.

What forecasters said that day

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 Apr 19, 1:58 PM EST, 49 minutes earlier.

Area forecast discussion, Apr 19, 1:58 PM EST, 49 minutes before
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Hazardous weather outlook, Apr 19, 12:14 PM EST, 2 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
114 PM EDT SUN APR 19 2015

GAZ029-NCZ048-051-052-058-059-201715-
ELBERT-MADISON-SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-
114 PM EDT SUN APR 19 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS WILL MOVE IN ACROSS
THE REGION FROM THE SOUTHWEST TODAY. A FEW STORMS MAY BE
SEVERE...WITH DAMAGING WIND GUSTS AS THE PRIMARY THREAT. LOCALLY
HEAVY RAINFALL WILL ALSO BE POSSIBLE WHERE THUNDERSTORMS
REPEATEDLY PASS OVER THE SAME AREAS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

..MONDAY...SEVERE THUNDERSTORMS POSSIBLE. A COLD FRONT WILL CROSS
THE AREA MONDAY AFTERNOON. THERE MAY BE A FEW STRONG TO SEVERE
THUNDERSTORMS ALONG AND AHEAD OF THE FRONT...PRODUCING DAMAGING
WIND GUSTS AND LARGE HAIL.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ010-017-018-026-028-NCZ033-035>037-049-050-053-056-057-062>065-
068-069-501>510-SCZ001>008-010-201715-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-AVERY-ALEXANDER-IREDELL-DAVIE-
YANCEY-MITCHELL-BUNCOMBE-CATAWBA-ROWAN-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN-CALDWELL MOUNTAINS-
GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-
EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-
POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-PICKENS MOUNTAINS-
GREENVILLE MOUNTAINS-GREATER OCONEE-GREATER PICKENS-
GREATER GREENVILLE-SPARTANBURG-CHEROKEE-ANDERSON-
114 PM EDT SUN APR 19 2015

...FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

IN ADDITION TO THE FLOOD WATCH...THERE WILL BE A THREAT OF SEVERE
THUNDERSTORMS...WITH DAMAGING WIND GUSTS AS THE PRIMARY THREAT. AN
ISOLATED TORNADO THREAT WILL ALSO EXIST ACROSS THE FOOTHILLS AND
PIEDMONT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

..MONDAY...SEVERE THUNDERSTORMS POSSIBLE. A COLD FRONT WILL CROSS
THE AREA MONDAY AFTERNOON. THERE MAY BE A FEW STRONG TO SEVERE
THUNDERSTORMS ALONG AND AHEAD OF THE FRONT...PRODUCING DAMAGING
WIND GUSTS AND LARGE HAIL.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NCZ082-SCZ011>014-019-201715-
UNION-ABBEVILLE-LAURENS-CHESTER-GREENWOOD-
114 PM EDT SUN APR 19 2015

...TORNADO WATCH 79 IN EFFECT UNTIL 8 PM EDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND
UPSTATE SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   TORNADO WATCH.

ADDITIONALLY...LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE...PARTICULARLY IN AREAS AFFECTED BY MULTIPLE ROUNDS OF
THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

..MONDAY...SEVERE THUNDERSTORMS POSSIBLE. A COLD FRONT WILL CROSS
THE AREA MONDAY AFTERNOON. THERE MAY BE A FEW STRONG TO SEVERE
THUNDERSTORMS ALONG AND AHEAD OF THE FRONT...PRODUCING DAMAGING
WIND GUSTS AND LARGE HAIL.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NCZ070>072-SCZ009-201715-
GASTON-MECKLENBURG-CABARRUS-YORK-
114 PM EDT SUN APR 19 2015

...FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...TORNADO WATCH 79 IN EFFECT UNTIL 8 PM EDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND
UPSTATE SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.
   TORNADO WATCH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

..MONDAY...SEVERE THUNDERSTORMS POSSIBLE. A COLD FRONT WILL CROSS
THE AREA MONDAY AFTERNOON. THERE MAY BE A FEW STRONG TO SEVERE
THUNDERSTORMS ALONG AND AHEAD OF THE FRONT...PRODUCING DAMAGING
WIND GUSTS AND LARGE HAIL.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

WIMBERLEY

In the hours before

Special weather statement, Apr 19, 1:30 PM EST, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
230 PM EDT SUN APR 19 2015

SCZ007-012-191900-
LAURENS SC-SPARTANBURG SC-
230 PM EDT SUN APR 19 2015

...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF NORTH
CENTRAL LAURENS AND SPARTANBURG UNTIL 300 PM EDT...

AT 229 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES SOUTH OF REIDVILLE
TO 4 MILES EAST OF GRAY COURT...AND MOVING NORTH AT 35 MPH.

WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES UP TO 2 INCHES
PER HOUR WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
SPARTANBURG...LAURENS...BOILING SPRINGS...WOODRUFF...DUNCAN...
LYMAN...WELLFORD...INMAN...ROEBUCK AND REIDVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS WILL
CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM.

&&

LAT...LON 3445 8203 3473 8217 3478 8215 3482 8219
      3519 8206 3519 8199 3479 8180
TIME...MOT...LOC 1829Z 201DEG 28KT 3481 8213 3460 8203

TDP
Special weather statement, Apr 19, 2:00 PM EST, 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
300 PM EDT SUN APR 19 2015

SCZ007-013-191930-
SPARTANBURG SC-UNION SC-
300 PM EDT SUN APR 19 2015

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF EASTERN SPARTANBURG
AND NORTHWESTERN UNION UNTIL 330 PM EDT...

AT 258 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5
MILES SOUTHWEST OF CROFT STATE PARK...OR 10 MILES SOUTH OF
SPARTANBURG...MOVING NORTHEAST AT 35 MPH.

WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES UP TO 2 INCHES
PER HOUR WILL BE POSSIBLE WITH THIS STORM. WEAK ROTATION IS ALSO
PRESENT IN THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SPARTANBURG...PACOLET...COWPENS...JONESVILLE...PACOLET MILLS...CROFT
STATE PARK...CEDAR SPRINGS...MOORE...ROEBUCK AND PAULINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS WILL
CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM.

&&

LAT...LON 3478 8203 3508 8182 3506 8181 3504 8181
      3503 8179 3493 8176 3493 8174 3491 8170
      3491 8168 3490 8167 3490 8165 3488 8164
      3487 8162 3467 8184
TIME...MOT...LOC 1858Z 217DEG 30KT 3480 8189

TDP
Special weather statement, Apr 19, 2:02 PM EST, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
302 PM EDT SUN APR 19 2015

SCZ012-191930-
LAURENS SC-
302 PM EDT SUN APR 19 2015

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF CENTRAL LAURENS
UNTIL 330 PM EDT...

AT 301 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
GRAY COURT...OR 5 MILES NORTHWEST OF LAURENS...MOVING NORTHEAST AT 25
MPH.

WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LAURENS...GRAY COURT...ORA...HICKORY TAVERN AND ENOREE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3454 8223 3474 8209 3472 8208 3472 8207
      3470 8207 3470 8206 3466 8200 3465 8195
      3460 8191 3459 8189 3460 8188 3459 8188
      3444 8206
TIME...MOT...LOC 1901Z 212DEG 23KT 3454 8211

TDP
Special weather statement, Apr 19, 2:17 PM EST, 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
317 PM EDT SUN APR 19 2015

SCZ011-019-191945-
ABBEVILLE SC-GREENWOOD SC-
317 PM EDT SUN APR 19 2015

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN
ABBEVILLE AND WESTERN GREENWOOD UNTIL 345 PM EDT...

AT 317 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
TROY...OR 11 MILES SOUTHEAST OF ABBEVILLE...MOVING NORTHEAST AT 30
MPH.

WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES UP TO 2 INCHES
PER HOUR WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GREENWOOD...COKESBURY...HODGES...TROY...LAKE GREENWOOD...NINETY
SIX...PROMISED LAND...BRADLEY AND CORONACA.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3406 8233 3406 8241 3438 8220 3435 8217
      3433 8217 3432 8214 3431 8212 3430 8208
      3424 8201 3424 8198 3397 8219 3399 8221
      3402 8225 3397 8231
TIME...MOT...LOC 1917Z 213DEG 28KT 3403 8229

TDP
Special weather statement, Apr 19, 2:31 PM EST, 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
331 PM EDT SUN APR 19 2015

SCZ008-013-192000-
CHEROKEE SC-UNION SC-
331 PM EDT SUN APR 19 2015

...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHEROKEE
AND NORTH CENTRAL UNION UNTIL 400 PM EDT...

AT 331 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR PRIME OUTLET MALL TO
NEAR JONESVILLE...AND MOVING NORTHEAST AT 35 MPH.

WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES UP TO 2 INCHES
PER HOUR WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
GAFFNEY...BLACKSBURG...BUFFALO...JONESVILLE...PRIME OUTLET MALL...
COWPENS NATIONAL BATTLEFIELD...DRAYTONVILLE...THICKETTY...SARATT AND
CHEROKEE FALLS.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3486 8176 3491 8171 3493 8174 3493 8176
      3503 8179 3504 8181 3509 8182 3518 8177
      3517 8147 3505 8144 3505 8147 3503 8149
      3498 8148 3494 8149 3494 8148 3467 8172
TIME...MOT...LOC 1931Z 210DEG 30KT 3508 8177 3480 8171

TDP
Special weather statement, Apr 19, 2:42 PM EST, 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
342 PM EDT SUN APR 19 2015

SCZ012-019-192015-
LAURENS SC-GREENWOOD SC-
342 PM EDT SUN APR 19 2015

...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CENTRAL
LAURENS AND CENTRAL GREENWOOD UNTIL 415 PM EDT...

AT 342 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR COKESBURY TO 8 MILES
EAST OF TROY...AND MOVING NORTHEAST AT 40 MPH.

WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES UP TO 2 INCHES
PER HOUR WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
GREENWOOD...LAURENS...NINETY SIX...CROSS HILL...WATERLOO...LAKE
GREENWOOD...NINETY SIX HISTORIC SITE...GREENWOOD STATE PARK...
COKESBURY AND CORONACA.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3433 8221 3467 8201 3465 8195 3461 8191
      3430 8189 3420 8194 3417 8191 3398 8207
      3399 8215 3397 8218
TIME...MOT...LOC 1942Z 210DEG 33KT 3432 8217 3400 8215

TDP

The radar

The Greer radar (KGSP), 77 km away, was scanning. The volume nearest the first event began at 19:48 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind, 1 flash flood, 1 flood. Local standard time, as filed.

Thunderstorm Wind, Greenwood

When
April 19, 2:47 PM EST
Where
Greenwood County, 2.39 mi WNW of Greenwood to 1.85 mi WNW of Coronaco
Measured
50 kt (58 mph) estimated gust
Reported by
Law Enforcement
Coordinates
34.190, -82.210

Highway Patrol reported a tree blown down at Rosemont Dr and Highway 72 on the west side of the city of Greenwood and another tree blown down at Old Laurens Rd and Highway 246 (6 NE Greenwood).

Flash Flood, York

When
April 19, 6:15 PM EST to 9:00 PM EST
Where
York County, 0.91 mi E of Ogden to 1.88 mi SW of Newport
Cause
Heavy Rain
Property damage
$10,000
Reported by
River/Stream Gage
Coordinates
34.869, -81.084

Highway Patrol reported flash flooding developed across eastern York County after about an inch of rain fell in about an hour associated with an area of thunderstorms. This was on top of 1-2 inches that had already fallen earlier in the day. Automated stream gauges on Wildcat Creek southwest of Rock Hill, and on Big Dutchman Creek north of the city. Multiple roads were closed due to flooding along these creeks and due to poor drainage. Affected roads included Mt Gallant Rd, McConnells Highway at Saluda Rd, and Paraham Rd at Highway 49.

Flood, York

When
April 19, 9:00 PM EST to April 20, 1:00 AM EST
Where
York County, 1.31 mi SE of Ogden to 1.55 mi NE of Ogden
Cause
Heavy Rain
Property damage
$1,000
Reported by
River/Stream Gage
Coordinates
34.858, -81.082

Although heavy rain ended across York County during the evening of the 19th, flooding continued along the Wildcat Creek basin into the early part of the overnight.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in South Carolina in 2015Every state in 2015This day in weather historyWarnings in South Carolina, April 2015

Sources

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 2026-10-01. Each event’s entry at NCEI: 567117, 567119, 567132.