A stationary front in combination with a warm unstable air mass, resulted in scattered strong to severe thunderstorms across southeast Georgia.
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 CHS wrote it up.
A stationary front in combination with a warm unstable air mass, resulted in scattered strong to severe thunderstorms across southeast Georgia.
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 Charleston, SC wrote its last area forecast discussion before the first event at Apr 22, 3:05 PM EST, 1 hour 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON SC 405 PM EDT FRI APR 22 2011 .SYNOPSIS... A LINGERING FRONT AND AN INLAND WEDGE OF HIGH PRESSURE WILL GRADUALLY DISSIPATE TONIGHT. ATLANTIC HIGH PRESSURE WILL PREVAIL SATURDAY THROUGH MIDWEEK. A COLD FRONT WILL MOVE THROUGH THE REGION WEDNESDAY NIGHT OR THURSDAY. && .NEAR TERM /UNTIL 6 AM SATURDAY MORNING/... SATELLITE TRENDS SUGGEST THAT THE INLAND WEDGE OF HIGH PRESSURE...INDICATED BY THE SWATH OF LOW CLOUDS ACROSS THE CAROLINAS AND NORTHERN GEORGIA...IS SLOWLY ERODING TO THE NORTH BY MID AFTERNOON. THE LINGERING BOUNDARY TO THE SOUTH WILL BE LIFTING NORTH AS A WARM FRONTAL FEATURE ACCORDINGLY. SHOWERS AND THUNDERSTORMS ACROSS MAINLY THE CHARLESTON TRI COUNTY AREA PERSIST WITHIN THE DEEP MOISTURE OF THE ERODING WEDGE...WHILE ISOLATED THUNDERSTORMS HAVE INITIATED SOUTH OF THE BOUNDARY WITHIN WARMER AND MORE UNSTABLE AIR. WILL FOLLOW PRECIPITATION EVOLUTION INDICATED IN BOTH THE 12Z AND 18Z NAM SOLUTIONS...WHICH SHOW PRECIPITATION LIFTING NORTH DURING THE EVENING HOURS FOLLOWING THE DEPARTING DEEP MOISTURE OF THE INLAND WEDGE. SURFACE HIGH PRESSURE WILL SET UP OVER THE ATLANTIC TONIGHT...WHILE UPPER LEVEL RIDGING REBUILDS FROM THE SOUTH. THIS PATTERN CHANGE FURTHER SUGGESTS REDUCED SHOWER/THUNDERSTORM POTENTIAL TONIGHT...AND WILL THUS STEADILY DECREASE POPS FROM SOUTH TO NORTH THIS EVENING TO RAIN-FREE CONDITIONS AFTER MIDNIGHT. LINGERING CLOUD COVER AND A MORE SOLID SOUTHERLY FLOW WILL MAINTAIN MILD OVERNIGHT CONDITIONS. EXPECT LOW TEMPERATURES TO RANGE FROM THE LOWER TO MID 60S. && .SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/... SATURDAY...RIDGING AND SUBSIDENCE WILL PREVAIL AT THE SURFACE AND ALOFT. CANNOT RULE OUT AN ISOLATED SHOWERS/THUNDERSTORM OR TWO ALONG THE INLAND PROGRESSING SEA BREEZE. HOWEVER...MODEL SOUNDINGS APPEAR SUFFICIENTLY DRY/CAPPED TO PREVENT MEASURABLE RAINFALL AT MOST/ALL LOCATIONS. OTHERWISE...UNDER MOSTLY SUNNY SKIES TEMPERATURES IN THE MID/UPPER 80S WILL BE COMMON AWAY FROM THE IMMEDIATE COAST. SATURDAY NIGHT...MAINLY CLEAR SKIES...LOW LEVEL MOISTURE AND DECOUPLING/LIGHT SURFACE WINDS SHOULD SUPPORT PATCHY FOG OVERNIGHT. OTHERWISE...EXPECT ANOTHER UNSEASONABLE WARM NIGHT...FEATURING LOWS IN THE LOWER TO MID 60S INLAND AND CLOSE TO 70F ON THE BEACHES. SUNDAY THROUGH MONDAY...EXPECT LITTLE CHANGE FROM THE SATURDAY REGIME. UNDER DEEP LAYER HIGH PRESSURE...ABOVE NORMAL TEMPERATURES WILL PREVAIL...AND POPS WILL REMAIN VERY LOW MAINLY ALONG THE SEA BREEZE DURING THE AFTERNOON/EARLY EVENING. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... THE UPPER RIDGE WILL WEAKEN TUESDAY AND DEEPER MOISTURE WILL SPREAD INTO THE REGION FROM THE S/SE. THUS...THE PROSPECT FOR SHOWERS/THUNDERSTORMS WILL INCREASE TO SOME DEGREE...ESPECIALLY DURING THE AFTERNOON/EVENING...AND HIGH TEMPERATURES COULD END UP A FEW DEGREES COOLER BUT STILL IN THE LOWER/MID 80S AWAY FROM THE COAST. MEANWHILE...A POTENT LOW PRESSURE SYSTEM SPAWNING OFF THE SOUTHERN ROCKIES WILL SHIFT RAPIDLY NE FROM THE SOUTHERN PLAINS TUE-WED TO THE GREAT LAKES BY THU. IN CONJUNCTION WILL BE A RAPIDLY DEEPENING UPPER LEVEL LONGWAVE TROUGH THAT WILL ROTATE THROUGH THE MISSISSIPPI RIVER VALLEY WED AND CROSS THE APPALACHIANS THU. GULF MOISTURE WILL POOL AHEAD OF THE FRONT...SUPPORTING MORE ORGANIZED PRECIPITATION DEVELOPMENT FOR WED NIGHT INTO THU. THERE ARE STILL PLENTY OF TIMING ISSUES AMONG THE MODELS BUT HAVE INCREASED POPS INTO THE LOW-MID CHC RANGE FOR THIS SCENARIO. THE FRONT LOOKS TO MOVES THROUGH THU LEADING TO DRIER CONDITIONS BEYOND. TEMPS WILL CONTINUE TO RUN WARMER THAN NORMAL AHEAD OF THE FRONT...REACHING THE MID 80S...THEN HAVE SHOWN A SLIGHT COOL DOWN THU WITH THE POTENTIAL FROPA. WILL ALSO NEED TO SEE HOW WELL MID-UPPER LEVEL JETTING AND INSTABILITY COMBINE WITH THIS SYSTEM AS SOME MODELS TO TRY TO ADVERTISE STRONG TSTM ORGANIZATION. WILL NEED A FEW MORE MODEL RUNS TO EVALUATE THIS POTENTIAL. && .AVIATION /20Z FRIDAY THROUGH WEDNESDAY/... KCHS...THE KCHS TERMINAL REMAINS EMBEDDED IN THE DEEP MOISTURE OF THE INLAND HIGH PRESSURE WEDGE THIS AFTERNOON. EXPECT MVFR CONDITIONS AND SCATTERED SHOWERS/THUNDERSTORMS TO CONTINUE TO IMPACT THE AREA FOR A FEW MORE HOURS...UNTIL THE MAIN SWATH OF CONVECTION LIFTS NORTH LATER TODAY. ALTHOUGH THERE COULD BE A BRIEF PERIOD WHERE MVFR CEILINGS LIFT OR SCATTER...LINGERING LOW LEVEL MOISTURE INTO THE EVENING AND OVERNIGHT HOURS WILL ALLOW LOW CEILINGS TO RETURN AND MVFR VISIBILITIES TO POTENTIALLY DEVELOP. DRIER AIR WILL SHIFT INTO THE REGION ON SATURDAY AS THE WEDGE LIFTS OUT OF THE REGION AND HIGH PRESSURE BUILDS ALOFT. EXPECT VFR CONDITIONS TO PREVAIL FOR SATURDAY AS A RESULT. KSAV...A LINGERING FRONT MARKING THE SOUTHERN EXTENT ON AN INLAND WEDGE OF HIGH PRESSURE WILL GRADUALLY LIFT NORTH TOWARD THE EVENING HOURS. AS A RESULT...THE KSAV TERMINAL HAS REMAINED OUTSIDE OF THE LOW CLOUD SHIELD AND SCATTERED SHOWERS TO THE NORTH. THERE IS SOME DISAGREEMENT IN THE MODELS CONCERNING RAIN POTENTIAL FOR SOUTHEAST GEORGIA LATER THIS AFTERNOON...AND PREFER TO ONLY MENTION CB AT KSAV UNTIL CONVECTIVE TRENDS SOUTH OF THE FRONT BECOME MORE APPARENT. SOME GUIDANCE SUGGEST KSAV WILL HAVE LESS MVFR IMPACTS TONIGHT THAN AREAS TO THE NORTH...LIKELY DUE TO LESS RAINFALL AND OVERALL MOISTURE AT THE TERMINAL TODAY. AT THIS POINT...PREFER TO INDICATE MVFR CONDITIONS DEVELOPING FOR A FEW HOURS NEAR DAYBREAK SATURDAY. OTHERWISE...EXPECT VFR CONDITIONS TO PREVAIL ON SATURDAY AS DRIER AIR SHIFTS INTO THE REGION. EXTENDED AVIATION OUTLOOK...MVFR OR LOWER CONDITIONS ARE LIKELY AROUND DAYBREAK IN LOW STRATUS/FOG EACH MORNING SUNDAY THROUGH TUESDAY. OTHERWISE VFR WEATHER WILL PREVAIL. && .MARINE... AN INLAND HIGH PRESSURE WEDGE WILL SLOWLY ERODE NORTHWARD TONIGHT...WHILE A LINGERING BOUNDARY ALSO LIFTS NORTH BEFORE DISSIPATING. SOUTHEAST WINDS OVER THE MARINE ZONES THIS AFTERNOON WILL STEADILY VEER MORE TO THE SOUTH BY DAYBREAK SATURDAY...AS SURFACE HIGH PRESSURE TO THE NORTH SETS UP OVER THE ATLANTIC WATERS. WIND SPEEDS WILL REMAIN AT 10 TO 15 KT...WITH SEAS A COMBINATION OF WIND WAVES AND SWELLS AT 5 FT OR LESS. CONDITIONS WILL REMAIN BELOW SMALL CRAFT ADVISORY THRESHOLDS THIS THE WEEKEND AND EARLY NEXT WEEK. CIRCULATION AROUND BERMUDA HIGH PRESSURE WILL MAINTAIN SYNOPTIC S TO SE WINDS THROUGH THE PERIOD...ENHANCED BY THE SEA BREEZE CIRCULATION EACH AFTERNOON/EARLY EVENING SATURDAY THROUGH TUESDAY. SEAS WILL RANGE FROM 2-4 FT WITHIN NEARSHORE WATERS TO 4-5 FT BEYOND 20 NM...DOMINATED BY AN 8-10 SECOND PERIOD SWELL. MEANWHILE...THE SREF MODEL CONTINUES TO INDICATE A CHANCE OF MARINE FOG THIS WEEKEND. HOWEVER...GIVEN THAT WATER TEMPS ARE 70F OR HIGHER WE FEEL THAT THIS MAY BE OVERDONE AND WE WILL INDICATE MARINE FOG WITHIN ANY FORECASTS. HOWEVER... RADIATION FOG COULD IMPACT CHARLESTON HARBOR DURING THE LATE NIGHT/EARLY MORNING HOURS SATURDAY-SUNDAY...AND PERHAPS MONDAY-TUESDAY AS WELL. AHEAD OF AN APPROACHING COLD FRONT...A TIGHTENING SURFACE PRESSURE GRADIENT COULD SUPPORT SMALL CRAFT ADVISORY WINDS/SEAS ACROSS PARTS OF OR ALL OF THE COASTAL WATERS. RIP CURRENTS...THE COMBINATION OF MODERATE ONSHORE FLOW AND SMALL SWELLS WILL RESULT IN A MARGINAL MODERATE RISK OF RIP CURRENTS THROUGH SATURDAY. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...NONE. SC...NONE. MARINE...NONE. &&
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE CHARLESTON SC 340 PM EDT FRI APR 22 2011 GAZ117-119-139-141-SCZ048>051-231100- COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-COASTAL MCINTOSH- BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER- 340 PM EDT FRI APR 22 2011 ...MODERATE RISK FOR RIP CURRENTS THROUGH 8 PM EDT SATURDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND SOUTHEAST 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. MODERATE RISK FOR RIP CURRENTS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. MODERATE RISK FOR RIP CURRENTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. AMZ330-350-352-354-374-GAZ087-088-099>101-114>116-118-137-138-140- SCZ040-042>045-047-052-231100- CHARLESTON HARBOR- WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM- WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO 60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS- INLAND BRYAN-INLAND CHATHAM-LONG-INLAND LIBERTY-INLAND MCINTOSH- ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INLAND JASPER-TIDAL BERKELEY- 340 PM EDT FRI APR 22 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 345 PM EDT FRI APR 22 2011 GAZ101-SCZ047-222015- EFFINGHAM-INLAND JASPER- 345 PM EDT FRI APR 22 2011 ...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EFFINGHAM AND JASPER COUNTIES THROUGH 415 PM EDT... AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM...NEAR TARBORO...MOVING SOUTHEAST AT 15 MPH. SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE... SWITZERLAND...TARBORO AND TILLMAN... PREPARE NOW FOR THE FOLLOWING HAZARDS... GUSTY WINDS OF 40 MPH... DIME SIZE HAIL... PRECAUTIONARY/PREPAREDNESS ACTIONS... HAVE AN ACTION PLAN READY IN THE EVENT THIS STORM STRENGTHENS OR A WARNING IS ISSUED. CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS FOR THE LATEST WEATHER INFORMATION. && LAT...LON 3246 8095 3231 8111 3247 8123 3256 8113 TIME...MOT...LOC 1944Z 315DEG 15KT 3248 8115
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 412 PM EDT FRI APR 22 2011 GAZ101-SCZ047-048-051-222045- BEAUFORT-COASTAL JASPER-EFFINGHAM-INLAND JASPER- 412 PM EDT FRI APR 22 2011 ...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EFFINGHAM...BEAUFORT AND JASPER COUNTIES THROUGH 445 PM EDT... AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM...NEAR DEERFIELD...MOVING SOUTHEAST AT 15 MPH. SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE... JASPER...LEMON ISLAND...SUN CITY AND SWITZERLAND... PREPARE NOW FOR THE FOLLOWING HAZARDS... GUSTY WINDS OF 40 TO 50 MPH... PENNY SIZE HAIL... PRECAUTIONARY/PREPAREDNESS ACTIONS... HAVE AN ACTION PLAN READY IN THE EVENT THIS STORM STRENGTHENS OR A WARNING IS ISSUED. CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS FOR THE LATEST WEATHER INFORMATION. && LAT...LON 3237 8079 3223 8101 3240 8120 3249 8104 TIME...MOT...LOC 2012Z 315DEG 15KT 3240 8106
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 417 PM EDT FRI APR 22 2011 GAZ100-101-222045- BULLOCH-EFFINGHAM- 417 PM EDT FRI APR 22 2011 ...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BULLOCH AND EFFINGHAM COUNTIES THROUGH 445 PM EDT... AT 415 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM...NEAR BROOKLET...MOVING EAST AT 15 MPH. SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE... BROOKLET...GEORGIA SOUTHERN...LEEFIELD...STATESBORO AND STILSON... PREPARE NOW FOR THE FOLLOWING HAZARDS... GUSTY WINDS OF 40 TO 50 MPH... PENNY SIZE HAIL... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY FLOOD DITCHES AND LOW-LYING AREAS. REDUCE VEHICLE SPEED TO LOWER THE RISK OF HYDROPLANING. DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE ROAD. SEEK AN ALTERNATE ROUTE. && LAT...LON 3247 8148 3226 8150 3235 8184 3247 8181 TIME...MOT...LOC 2018Z 279DEG 15KT 3237 8166
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
431 PM EDT FRI APR 22 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0615 PM MARINE TSTM WIND 2 ENE JAMES ISLAND 32.75N 79.90W
04/21/2011 M48 MPH CHARLESTON SC OFFICIAL NWS OBS
FT JOHNSON NERRS HAD 30 MPH SUSTAINED WIND WITH 48 MPH
PEAK GUST.
&&
EVENT NUMBER CHS1100357
JRLSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 437 PM EDT FRI APR 22 2011 SCZ047-048-051-222100- BEAUFORT-COASTAL JASPER-INLAND JASPER- 437 PM EDT FRI APR 22 2011 ...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BEAUFORT AND JASPER COUNTIES THROUGH 500 PM EDT... AT 436 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM...NEAR OKATIE...MOVING SOUTHEAST AT 10 MPH. SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE... JASPER...SUN CITY AND SWITZERLAND... PREPARE NOW FOR THE FOLLOWING HAZARDS... GUSTY WINDS OF 40 TO 50 MPH... PENNY SIZE HAIL... PRECAUTIONARY/PREPAREDNESS ACTIONS... HAVE AN ACTION PLAN READY IN THE EVENT THIS STORM STRENGTHENS OR A WARNING IS ISSUED. CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS FOR THE LATEST WEATHER INFORMATION. && LAT...LON 3237 8083 3221 8100 3238 8114 3244 8102 TIME...MOT...LOC 2037Z 306DEG 8KT 3237 8103
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
450 PM EDT FRI APR 22 2011
GAZ088-100-101-SCZ042-222115-
BULLOCH-EFFINGHAM-HAMPTON-SCREVEN-
450 PM EDT FRI APR 22 2011
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF SCREVEN...BULLOCH...
EFFINGHAM AND HAMPTON COUNTIES THROUGH 515 PM EDT...
AT 449 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR GRIFFIN LAKE...MOVING EAST AT 20 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
EGYPT...GUYTON...KILDARE...NEWINGTON...OLIVER...SHAWNEE...SPRINGFIELD
AND STILSON...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
DIME SIZE HAIL...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY
FLOOD DITCHES AND LOW-LYING AREAS. REDUCE VEHICLE SPEED TO LOWER THE
RISK OF HYDROPLANING. DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE
ROAD. SEEK AN ALTERNATE ROUTE.
&&
LAT...LON 3263 8128 3231 8126 3229 8158 3249 8155
3259 8160
TIME...MOT...LOC 2050Z 264DEG 18KT 3238 8149The Charleston,SC radar (KCLX), 40 km away, was scanning. The volume nearest the first event began at 21:27 UTC.
3 hail, 1 thunderstorm wind. Local standard time, as filed.
Law enforcement reported powerlines down along North Ash Street.
The public reported dime to nickel size hail 2 miles southeast of Marlow, Georgia.
Law enforcement reported quarter size hail on Courthouse Road near Midland Road.
A trained spotter reported quarter size hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2011Every state in 2011This day in weather historyWarnings in Georgia, April 2011
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: 304254, 304251, 304252, 304253.