Ice built up on area rivers following very cold temperatures through February and early March. The last cold snap in early March was followed by a round of unseasonably warm temperatures that caused the ice to began melting and to break-up on the Big Horn and Nowood rivers in Big Horn and Washakie counties.
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 RIW wrote it up.
Ice built up on area rivers following very cold temperatures through February and early March. The last cold snap in early March was followed by a round of unseasonably warm temperatures that caused the ice to began melting and to break-up on the Big Horn and Nowood rivers in Big Horn and Washakie counties. The result was ice jam flooding that impacted areas from Worland to north of Greybull on the Big Horn River, and from near Ten Sleep to Manderson on the Nowood River.
The flooding began on Friday morning, March 7, in Worland near the Highway 789 bridge on the west side of town. Several homes received at least minor flooding, the local radio station had to be sandbagged to protect it, and at least 80 people were evacuated. A gas pipeline also broke in Riverside Park under the weight of the massive chunks of ice that were as big as trucks. The ice jams affecting Worland gradually gave way and moved downstream on March 8, but downstream areas north to the Big Horn County line still experienced flooding for the next few days. Flooding on the Nowood River in Washakie County inundated ranch lands, corrals, and a barn, and caused at least one resident to evacuate their home.
Additional flooding occurred downstream along both rivers in Big Horn County. One ranch along the Nowood River was significantly impacted by the rising water created by the ice jams. The town of Manderson, near the confluence of the Big Horn and Nowood, was threatened for a couple of days as the ice jams moved down both rivers. One business was flooded and water surrounded more than a few homes on March 9 and 10. At one time, water was flowing down the main street of town. Aggressive sandbagging efforts diverted water around Manderson school and the water treatment plant. Farther downstream on the Big Horn River, flooding threatened the town of Greybull. A levee system served well to protect the community and only three homes outside the levee received minor flooding. The Spence Oil Field north of Greybull and other low-lying areas north of town were flooded during the ice jam episode.
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 Riverton, WY wrote its last area forecast discussion before the first event at Mar 7, 5:48 AM MST, 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 548 AM MST FRI MAR 7 2014 .SHORT TERM...FRIDAY THROUGH SUNDAY NIGHT UPDATED FOR A DENSE FOG ADVISORY FOR JOHNSON COUNTY UNTIL 9 AM MST. ALSO HIT NATRONA COUNTY WITH SEVERAL INCHES OF SNOW THIS MORNING WITH MODERATE TO HEAVY SNOW FALLING WITH ACCUMULATION. RATHER PROGRESSIVE 5 WAVE LW PATTERN (WHICH WE HAVE NOT BEEN PRIVY TO MOST OF THE WINTER) WILL KEEPS THINGS ACTIVE AND UNSETTLED IN BETWEEN BRIEF INTERLUDES WITH DRY/STABLE/NICE WEATHER. SPRING IS FINALLY BEGINNING TO SHOW ITSELF. DISCOMBOBULATED FRONT JUST STARTING TO ENTER THE NRN PORTIONS OF WY TONIGHT...AND WILL ACCELERATE AS FRONTOGENESIS PROCEEDS AND TRACK SWD OVERNIGHT...MOSTLY CLEARING THE STATE AND HEADING INTO CO BY SUNRISE. OTHERWISE...MINUS 8 TO 10 DEG C H7 TEMPS HAVE REPLACED THE MINUS 3 DEG C THAT WE HAD 24 HRS AGO...KEEPING THE THE FA UNDER LOW END UNSTABLE CONDITIONS WITH ISOLATED TO WIDELY SCATTERED RAIN/SNOW SHOWERS AROUND THE REGION. AREAS BEST SUITED FOR GETTING MEASURABLE AMOUNTS OF LIQUID INCLUDE THE WRN WIND RIVER MOUNTAINS...SRN ABSAROKAS...AND THE BIG HORN MOUNTAINS WITH MUCH LESS/LIGHTER CHC/AMOUNTS IN BETWEEN. SAT IMAGERY SHOWS MAIN TROF AXIS CUTTING FROM N TO S RIGHT THRU THE CENTER OF ID AND WILL MOSTLY CLEAR THE CWA BY THIS EVENING...WITH PRECIP CHCS GENERALLY FOLLOWING THIS W TO E SHIFT THRU THE DAY. PATCHY FOG WILL ALSO BE POSSIBLE AROUND THE CWA THIS MORNING...AND PERHAPS AGAIN SAT MORNING. WILL WAIT TO SEE WHAT KIND OF ABOVE SFC DRYING PROCEEDS LATER TONIGHT. POST FRONTAL LIGHT CONVECTIVE PRECIP WILL LINGER THRU TODAY WITH COLD MID/UPR LVLS CONTINUING TO KEEP THING JUST ENOUGH UNSETTLED TO PRODUCE SOME SHOWERY BOUTS OF RAIN OR SNOW SHOWERS. ONLY UP TO A COUPLE OF INCHES AT MOST SHOULD BE EXPECTED IN FAVORED LOCATIONS TODAY. TONIGHT THROUGH SUN...ATMOSPHERE DRIES OUT STATE WIDE WITH HI SFC P AND UPR RIDGING LARGELY PROTECTING THE FA. BRIGHT SUNSHINE WILL TAKE OVER THE STATE SAT WITH HIGH TEMPS CLIMBING BACK INTO THE UPPER 40S AND 50S E OF THE DIVIDE AND MOSTLY 40S WEST AFTER A COOL FRI. SAT NIGHT...W TO SW WINDS WILL ONCE AGAIN BEGIN TO INCREASE OVR AND IN THE LEE OF THE ABSAROKA MOUNTAINS...POSSIBLY GETTING DOWN INTO THE CODY FOOTHILL REGION. ATTM...IT DOES NOT LOOK LIKE A WARNING SITUATION...ALTHOUGH BY SUN AFTERNOON IT SHOULD BE QUITE GUSTY IN ALL OF THE USUAL SPOTS. GENERALLY SPEAKING...WARMING SHOULD BE WELL ON THE WAY BY SUN E OF THE DIVIDE WITH NEAR 60 TO MID 60S COMMONS AT LOWER ELEVATIONS. W OF THE DIVIDE...ALTHOUGH UNDER A MODEST RIDGE...EPAC MOISTURE WILL BEGIN TO MOVE INTO THE WRN FA WITH FETCH/TRAJECTORY OF LOW/MID LVL FLOW FAVORING TERRAIN FORCED PRECIP. IT LOOKS LIKE UPR LVLS (JET PROXIMITY) WILL BE INCREASINGLY FAVORABLE BY SUN NIGHT TO START TO AID IN SOME MODEST UPR QG FORCING AHEAD OF THE NEXT LARGE TROF DUE TO REPLACE THE RIDGE LATER ON MONDAY. WILL HAVE TO WATCH DEVELOPMENT INTO THE NRN TETON/YELLOWSTONE AREA SUNDAY NIGHT AND ONWARD AS SIGNIFICANT PRECIP MAY END UP FALLING THERE AT FOR THE BEGINNING OF THE NEXT WORK WEEK. .LONG TERM...MONDAY THROUGH FRIDAY AS ELUDED AT THE END OF THE SHORT TERM DISCUSSION...A SIGNIFICANT PRECIP EVENT MAY DEVELOP ACROSS PORTIONS OF THE AREA MONDAY INTO TUESDAY. THIS SYSTEM IS NOW TRACKING ACROSS THE FAR WRN PACIFIC AND EVEN THOUGH THERE ARE STILL TIMING DIFFERENCES...THE OP GFS AND ECMWF ARE IN MUCH CLOSER AGREEMENT TONIGHT. THE ECMWF IS ABOUT 6 HOURS FASTER BUT OTHERWISE...THEY ARE GOOD ENOUGH TO RAISE THE CONFIDENCE AND INTRODUCE HIGHER POPS SPREADING FROM WEST TO EAST MONDAY INTO MONDAY NIGHT. NICE ISENTROPIC UPGLIDE IMPACTS THE WEST ON MONDAY WHILE MOST AREAS EAST OF THE DIVIDE WILL BE WINDY AND DRY. THE FRONT MAY EDGE INTO THE FAR NORTH LATE IN THE DAY MONDAY BUT OTHERWISE...EXPECT MILD TEMPERATURES IN THE 50S FOR MOST OF CENTRAL WYOMING. THINGS CHANGE MONDAY NIGHT EAST OF THE DIVIDE...AS THE UPPER LOW DIGS INTO IDAHO AND POTENTIALLY CLOSES OFF AS IT TRACKS ACROSS SRN WYO OR NRN CO MONDAY NIGHT AND TUESDAY MORNING. STILL TOO FAR AWAY TO HAVE HIGH CONFIDENCE BECAUSE OF THE POTENTIAL COMPLEXITY OF THE TROUGH BUT AT LEAST THE MODELS ARE STARTING TO COME TOGETHER BETTER TONIGHT. POTENTIAL SIGNIFICANT SNOWSTORM IS POSSIBLE FOR THE WRN WYOMING MOUNTAINS MONDAY AND MONDAY NIGHT...AND IN PORTIONS OF CENTRAL WYOMING MONDAY NIGHT AND TUESDAY. IF THE STORM LAYS DOWN SOME FRESH SNOW THEN WEDNESDAY MORNING COULD BE QUITE CHILLY WITH COLD TEMPERATURES ALOFT...FRESH SNOW COVER AND LIGHT WINDS. SLOW WARM-UP ON WEDNESDAY WITH FURTHER WARMING THURSDAY. MARCH SUN WILL HELP. MODELS DIVERGE AT THE END OF THE PERIOD. LAST NIGHT IT WAS THE ECMWF THAT SHOWED A LOW BARGING UNDERNEATH THE WRN U.S. RIDGE AND TONIGHT IT IS FURTHER NORTH IN MONTANA BUT STILL CLOSE ENOUGH FOR POTENTIAL SNOW IN THE MOUNTAINS. THE GFS NOW SHOWS AN UPPER LOW TOO BUT MUCH FURTHER SOUTH AND DIGGING INTO NEVADA FRIDAY. ONLY INTRODUCED SOME SMALL POPS IN MAINLY THE MOUNTAINS FOR NOW WITH HIGH UNCERTAINTY ON HOW THIS SYSTEM MAY ACTUALLY TRACK. .AVIATION.../12Z ISSUANCE/ EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL ROUTES ISOLATED TO LOCALLY SCATTERED CONVECTION WILL BE POSSIBLE EARLY THIS MORNING...WITH A CONCENTRATION OVER JOHNSON AND NATRONA COUNTIES. THE BEST SHOT AT WIDESPREAD PRECIP WILL BE AROUND KCPR WHERE THERE IS THE POTENTIAL FOR A BRIEF PERIOD OF UPSLOPE INDUCED LIGHT SNOWFALL...IN COMBINATION WITH ACTIVITY SLIDING SOUTHEAST OFF THE BIGHORN MOUNTAINS THIS MORNING. THUS MVFR CEILINGS ARE LIKELY THIS MORNING ACROSS NATRONA AND JOHNSON COUNTIES...WITH LOCALIZED IFR AREAS. PARTS OF THE BIG HORN BASIN COULD ALSO SEE SOME FOG THIS MORNING...BUT COUNTING ON MID LEVEL CLOUDS/ISOLD SHOWERS TO KEEP FOG TO A MINIMUM. OTHERWISE...ISOLATED TO SCATTERED MOUNTAIN SNOW SHOWERS WILL REMAIN THROUGH THE DAY...PUSHING SOUTHEAST INTO THE LOWER ELEVATIONS AT TIMES...ESPECIALLY IN THE AFTERNOON. DRIER CONDITIONS AND DECREASING CLOUDINESS ARE EXPECTED TONIGHT. WINDS WILL GENERALLY BE LIGHT NORTHERLY OR VARIABLE TODAY. WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS ROUTES FOG WILL BE THE MAIN CONCERN ACROSS THE UPPER GREEN RIVER BASIN THIS MORNING...WHILE MVFR CEILINGS AND POSSIBLY LINGERING LIGHT SNOW SHOWERS COULD CONTINUE TO IMPACT KJAC THIS MORNING. THIS AFTERNOON THE MAIN CONCERN WILL BE MAINLY SNOW SHOWERS DEVELOPING OVER THE MOUNTAINS AND PUSHING SOUTHEAST INTO THE LOWER ELEVATIONS. DRIER CONDITIONS AND DECREASING CLOUDINESS ARE EXPECTED TONIGHT...WITH THE POSSIBILITY OF FOG IN THE WESTERN VALLEYS AND BASINS. .FIRE WEATHER... NO FIRE WEATHER CONCERNS THROUGH THE WEEKEND. WIDESPREAD LIGHT SHOWER ACTIVITY WILL BE POSSIBLE ACROSS THE ENTIRE REGION TODAY...BUT WILL HAVE LESS AND LESS MOISTURE TO WORK WITH THROUGH THE DAY. ONLY A COUPLE OF INCHES OF ADDITIONAL SNOWFALL CAN BE EXPECTED IN THE HIGHER FAVORED REGIONS OF THE MOUNTAINS TODAY...WITH ONLY A TRACE TO LESS THAN AN INCH ELSEWHERE. SATURDAY WILL BE HIGH AND DRY ACROSS THE REGION WITH PLENTY OF SUNSHINE AND A WARMING TREND BEGINNING...WITH TEMPERATURES RISING NEAR OR INTO THE 60S ACROSS MOST OF THE LOWER ELEVATIONS EAST OF THE DIVIDE ON SUNDAY. WINDS WILL BEGIN TO GET GUSTY ONCE AGAIN ACROSS THE USUAL WIND CORRIDOR IN THE SOUTH AND SOUTHEAST ZONES...AS WILL AS IN THE WIND RIVER AND ABSAROKA MOUNTAINS BY SATURDAY NIGHT. THE NEXT PRECIPITATION PRODUCING SYSTEM WILL BEGIN TO ARRIVE SUNDAY NIGHT IN THE WESTERN MOUNTAINS. && .RIW WATCHES/WARNINGS/ADVISORIES... DENSE FOG ADVISORY UNTIL 9 AM MST THIS MORNING WYZ010-011. && SHORT TERM...BRAUN LONG TERM...SKRBAC AVIATION...WM FIRE WEATHER...BRAUN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 545 AM MST FRI MAR 7 2014 WYZ001>020-022>030-081200- ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST- BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS- EAST SWEETWATER COUNTY-FLAMING GORGE- GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS- NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN- NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS- ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN- SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY- TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN- UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN- WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- YELLOWSTONE NATIONAL PARK- 545 AM MST FRI MAR 7 2014 ...DENSE FOG FOR JOHNSON COUNTY UNTIL 9 AM MST... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT A QUICK 1 TO 2 INCHES OF SNOW IS EXPECTED ACROSS THE LOWER ELEVATIONS OF JOHNSON COUNTY THIS MORNING WITH 3 TO 5 INCHES ON CASPER MOUNTAIN WITH LOCALLY HIGHER AMOUNTS. DENSE FOG IS EXPECTED ACROSS THE LOWER ELEVATIONS OF JOHNSON COUNTY THROUGH 9 AM THIS MORNING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY MONDAY...SIGNIFICANT SNOW POSSIBLE ACROSS THE WESTERN MOUNTAINS. MONDAY NIGHT AND TUESDAY...SNOW ACROSS CENTRAL WYOMING WITH A CHANCE OF SIGNIFICANT SNOWFALL. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE URGED TO REPORT ANY NEW SNOWFALL TOTALS...BY PHONE... EMAIL...OR SOCIAL MEDIA. THANK YOU. TEAM RIVERTON
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 240 AM MST FRI MAR 7 2014 WYZ010-071200- NORTHEAST JOHNSON COUNTY- 240 AM MST FRI MAR 7 2014 PATCHY FOG IS DEVELOPING ACROSS NORTHERN JOHNSON COUNTY THIS MORNING AND MAY BE ACCOMPANIED BY LIGHT SNOW SHOWERS OR FLURRIES FROM TIME TO TIME. VISIBILITIES WILL GENERALLY RANGE FROM ONE HALF TO ONE MILE. BOTH INTERSTATE 25 AND 90 MAY BE AFFECTED THROUGH 5 AM. JB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 440 AM MST FRI MAR 7 2014 WYZ020-022-071400- CASPER MOUNTAIN-NATRONA COUNTY LOWER ELEVATIONS- 440 AM MST FRI MAR 7 2014 ...A PERIOD OF MODERATE TO HEAVY SNOW WILL FALL ACROSS MUCH OF NATRONA COUNTY THIS MORNING... SNOW SHOWERS WILL CONTINUE TO MOVE SOUTHEAST ACROSS NATRONA COUNTY THIS MORNING WITH A QUICK 1 TO 2 INCHES EXPECTED ACROSS THE LOWER ELEVATIONS AND 3 TO 5 INCHES IN THE MOUNTAINS WITH LOCALLY HIGHER AMOUNTS. ROADS WILL BECOME SLICK OR SNOW COVERED IN MANY AREAS AND VISIBILITIES WILL BE SHARPLY REDUCED TO ONE HALF MILE OR LESS AT TIMES. USE CAUTION IF YOU ARE GOING TO BE TRAVELLING ACROSS NATRONA COUNTY THIS MORNING. SKRBAC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 512 AM MST FRI MAR 7 2014 WYZ020-022-071430- CASPER MOUNTAIN-NATRONA COUNTY LOWER ELEVATIONS- 512 AM MST FRI MAR 7 2014 ...A PERIOD OF MODERATE TO HEAVY SNOW WILL FALL ACROSS MUCH OF NATRONA COUNTY THIS MORNING... SNOW SHOWERS WILL CONTINUE TO MOVE SOUTHEAST ACROSS NATRONA COUNTY THIS MORNING WITH A QUICK 1 TO 2 INCHES EXPECTED ACROSS THE LOWER ELEVATIONS AND 3 TO 5 INCHES IN THE MOUNTAINS WITH LOCALLY HIGHER AMOUNTS. ROADS WILL BECOME SLICK OR SNOW COVERED IN MANY AREAS AND VISIBILITIES WILL BE SHARPLY REDUCED TO ONE HALF MILE OR LESS AT TIMES. USE CAUTION IF YOU ARE GOING TO BE TRAVELLING ACROSS NATRONA COUNTY THIS MORNING. WYZ010-071430- NORTHEAST JOHNSON COUNTY- 512 AM MST FRI MAR 7 2014 AREAS OF DENSE FOG WILL REDUCE THE VISIBILITY UNDER ONE QUARTER MILE AT TIMES THROUGH ABOUT SUNRISE BEFORE VISIBILITY IMPROVES. TRAVELLERS ON INTERSTATE 25 AND 90 FROM AROUND BUFFALO NORTH TO PINEY CREEK SHOULD BE PREPARED TO ENCOUNTER SHARPLY REDUCED VISIBILITIES. SLOW DOWN AND USE LOW BEAM HEADLIGHTS. WYZ017-071430- WIND RIVER BASIN- 512 AM MST FRI MAR 7 2014 A BAND OF HEAVY SNOW WAS DROPPING SOUTH ACROSS FAR EASTERN FREMONT COUNTY. TRAVELLERS HEADING EAST FROM SHOSHONI WILL ENCOUNTER THIS BAND OF SNOW AND IT CONTINUES ACROSS MUCH OF NATRONA COUNTY. EXPECT SNOW COVERED ROADS AND SHARPLY REDUCED VISIBILITY. CONDITIONS WILL IMPROVE ACROSS EASTERN FREMONT COUNTY AROUND SUNRISE. A QUICK 1 TO 2 INCHES OF SNOW IS EXPECTED IN FAR EASTERN FREMONT COUNTY. SKRBAC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 613 AM MST FRI MAR 7 2014 WYZ020-022-071600- CASPER MOUNTAIN-NATRONA COUNTY LOWER ELEVATIONS- 613 AM MST FRI MAR 7 2014 ...A PERIOD OF MODERATE TO HEAVY SNOW WILL FALL ACROSS MUCH OF NATRONA COUNTY THIS MORNING... SNOW SHOWERS WILL CONTINUE TO MOVE SOUTHEAST ACROSS NATRONA COUNTY THIS MORNING WITH A QUICK 1 TO 2 INCHES EXPECTED ACROSS THE LOWER ELEVATIONS AND 3 TO 5 INCHES IN THE MOUNTAINS WITH LOCALLY HIGHER AMOUNTS. ROADS WILL BECOME SLICK OR SNOW COVERED IN MANY AREAS AND VISIBILITIES WILL BE SHARPLY REDUCED TO ONE HALF MILE OR LESS AT TIMES. USE CAUTION IF YOU ARE GOING TO BE TRAVELLING ACROSS NATRONA COUNTY THIS MORNING. WYZ019-071600- GREEN MOUNTAINS AND RATTLESNAKE RANGE- 613 AM MST FRI MAR 7 2014 SNOW SHOWERS WILL CONTINUE TO MOVE SOUTHEAST ACROSS FAR SOUTHEAST FREMONT COUNTY AND SOUTHWEST NATRONA COUNTY. A QUICK 1 TO 2 INCHES OF SNOW IS EXPECTED WITH LOCALLY HIGHER AMOUNTS. TRAVELLERS BETWEEN JEFFREY CITY...MUDDY GAP AND INDEPENDENCE ROCK CAN EXPECT SLICK TRAVEL AND SHARPLY REDUCED VISIBILITY AT TIMES IN SNOW. SLOW DOWN AND ARRIVE SAFELY AT YOUR DESTINATION. SKRBAC
The national radar mosaic for the moment the first event began.
4 flood. Local standard time, as filed.
Ice jam flooding caused damage in Worland. Neighborhoods near the river north and south of the Highway 789 bridge reported flooding of some homes. The water extended 100-200 yards from the river's edge at a depth of 12 to 18 inches.
Flooding of two ranches occurred along the Nowood River north of Ten Sleep. The ice jams formed on several bends in the serpentine river flooding ranch lands. At least one resident evacuated their residence as the water level climbed.
Flooding of the Spence Oil Field and other areas north of Greybull occurred along the Big Horn River. Three homes outside the Greybull levee system had minor flooding.
An ice jam caused flooding around the town of Manderson near the confluence of the Big Horn and Nowood rivers. The National Guard was called in to assist with sandbagging and other protective measures on March 9 and 10.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2014Every state in 2014This day in weather historyWarnings in Wyoming, March 2014
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: 508946, 509205, 509207, 508947.