Heavy Rain, Sheridan
- When
- June 11, 9:00 AM MST
- Where
- Sheridan County, 0.83 mi NNW of Antelope
- Reported by
- Social Media
- Coordinates
- 48.690, -104.460
Public reported, via Facebook, heavy rain totaling 3.8 inches from overnight.
Recent unsettled weather and a strong cold front from the night before lingered through this day to allow a few efficient thunderstorms to develop and move through Daniels and Sheridan Counties, resulting in some heavy rain.
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 GGW wrote it up.
Recent unsettled weather and a strong cold front from the night before lingered through this day to allow a few efficient thunderstorms to develop and move through Daniels and Sheridan Counties, resulting in some heavy rain.
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 Glasgow, MT wrote its last area forecast discussion before the first event at Jun 11, 7:48 AM MST, 1 hour 12 minutes earlier.
Area Forecast Discussion National Weather Service Glasgow MT 848 AM MDT Fri Jun 11 2021 .DISCUSSION... Update: Made a quick update this morning to ramp up pops for the now exiting storm system over far NE Montana. System should be into North Dakota / Southern Canada by midday, so the remainder of the forecast is in good shape. Gilchrist Previous discussion: Strong shortwave trof lifting across northeast Montana this morning with surface low over southeast Saskatchewan. Showers linger across the region with the cold air advection behind yesterdays cold front passage. Tight gradient also keeping winds gusty. Showers should end from the southwest through the morning, but winds will be strong enough for most of the day to keep Lake Wind Advisory in place. As the system moves east and high pressure builds into the region, clearing skies and diminishing winds are expected by evening. Upper ridge will begin building north along the Rockies during the weekend. Dry conditions and warming temperatures are expected, with reading peaking around 100 on Tuesday. RAE && .AVIATION... Occasional MVFR conditions this morning as showers lift out of the region. Skies will be clearing through the afternoon for VFR conditions through tonight. Gusty west to northwest winds will persist through the day. && .GLASGOW WATCHES/WARNINGS/ADVISORIES... Lake Wind Advisory until 7 PM MDT this evening For Fort Peck Lake for Central and Southeast Phillips...Central and Southern Valley...Garfield...McCone...Petroleum. && weather.gov/glasgow
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GLASGOW MT
553 AM MDT FRI JUN 11 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0258 PM TSTM WND DMG 5 S FLAXVILLE 48.73N 105.17W
06/10/2021 DANIELS MT PUBLIC
GRAIN BIN DESTROYED BY THUNDERSTORM WINDS
SOUTH OF FLAXVILLE ON THE R Y RD. TIME
ESTIMATED FROM RADAR.
0258 PM TSTM WND DMG 5 S FLAXVILLE 48.73N 105.17W
06/10/2021 DANIELS MT PUBLIC
GRAIN BIN DESTROYED BY THUNDERSTORM WINDS
SOUTH OF FLAXVILLE ON THE R Y RD. TIME
ESTIMATED FROM RADAR.
0333 PM HAIL 18 W SIDNEY 47.71N 104.55W
06/10/2021 M1.50 INCH RICHLAND MT TRAINED SPOTTER
.
0333 PM HAIL 18 W SIDNEY 47.71N 104.55W
06/10/2021 M1.50 INCH RICHLAND MT TRAINED SPOTTER
0337 PM HAIL 5 N CULBERTSON 48.22N 104.50W
06/10/2021 E1.00 INCH ROOSEVELT MT TRAINED SPOTTER
AND HEAVY RAIN.
0337 PM HAIL 5 N CULBERTSON 48.22N 104.50W
06/10/2021 E1.00 INCH ROOSEVELT MT TRAINED SPOTTER
AND HEAVY RAIN.
0340 PM TSTM WND DMG 17 E BREDETTE 48.46N 104.94W
06/10/2021 ROOSEVELT MT PUBLIC
THUNDERSTORM WINDS ROLLED GRAIN BINS,
KNOCKED DOWN POWER POLES, AND DAMAGED
OUTBUILDINGS.
0340 PM TSTM WND DMG 17 E BREDETTE 48.46N 104.94W
06/10/2021 ROOSEVELT MT PUBLIC
THUNDERSTORM WINDS ROLLED GRAIN BINS,
KNOCKED DOWN POWER POLES, AND DAMAGED
OUTBUILDINGS.
0400 PM HAIL OUTLOOK 48.89N 104.78W
06/10/2021 E1.00 INCH SHERIDAN MT PUBLIC
CALL REPORTING NICKEL TO QUARTER SIZE HAIL
ONGOING.
0400 PM HAIL OUTLOOK 48.89N 104.78W
06/10/2021 E1.00 INCH SHERIDAN MT PUBLIC
CALL REPORTING NICKEL TO QUARTER SIZE HAIL
ONGOING.
0400 PM HAIL OUTLOOK 48.89N 104.78W
06/10/2021 E1.00 INCH SHERIDAN MT TRAINED SPOTTER
CALL REPORTING NICKEL TO QUARTER SIZE HAIL
ONGOING.
0415 PM HAIL 7 W RESERVE 48.61N 104.61W
06/10/2021 M1.00 INCH SHERIDAN MT PUBLIC
PEA TO QUARTER SIZE HAIL FROM 4 TO 4:14 PM.
REPORT VIA SOCIAL MEDIA.
0415 PM HAIL 7 W RESERVE 48.61N 104.61W
06/10/2021 M1.00 INCH SHERIDAN MT PUBLIC
PEA TO QUARTER SIZE HAIL FROM 4 TO 4:14 PM.
REPORT VIA SOCIAL MEDIA.
0422 PM HAIL SIDNEY 47.71N 104.16W
06/10/2021 E1.75 INCH RICHLAND MT EMERGENCY MNGR
CONTINUED PEA SIZE HAIL, WITH BRIEFLY UP TO
PING PONG BALL SIZE.
0422 PM HAIL SIDNEY 47.71N 104.16W
06/10/2021 E1.50 INCH RICHLAND MT EMERGENCY MNGR
CORRECTS PREVIOUS HAIL REPORT FROM SIDNEY.
CONTINUED PEA SIZE HAIL, WITH BRIEFLY UP TO
PING PONG BALL SIZE.
0422 PM HAIL SIDNEY 47.71N 104.16W
06/10/2021 E1.75 INCH RICHLAND MT EMERGENCY MNGR
CONTINUED PEA SIZE HAIL, WITH BRIEFLY UP TO
PING PONG BALL SIZE.
0422 PM HAIL SIDNEY 47.71N 104.16W
06/10/2021 E1.50 INCH RICHLAND MT EMERGENCY MNGR
CORRECTS PREVIOUS HAIL REPORT FROM SIDNEY.
CONTINUED PEA SIZE HAIL, WITH BRIEFLY UP TO
PING PONG BALL SIZE.
0425 PM HAIL 6 W RESERVE 48.61N 104.59W
06/10/2021 E0.88 INCH SHERIDAN MT TRAINED SPOTTER
0425 PM HAIL 6 W RESERVE 48.61N 104.59W
06/10/2021 E0.88 INCH SHERIDAN MT TRAINED SPOTTER
0433 PM HAIL ANTELOPE 48.69N 104.46W
06/10/2021 M1.00 INCH SHERIDAN MT PUBLIC
QUARTER SIZE HAIL FELL FOR 20 MINUTES.
RECEIVED OVER ONE INCH OF RAIN.
0433 PM HAIL ANTELOPE 48.69N 104.46W
06/10/2021 M1.00 INCH SHERIDAN MT PUBLIC
QUARTER SIZE HAIL FELL FOR 20 MINUTES.
RECEIVED OVER ONE INCH OF RAIN.
0436 PM TSTM WND GST 4 SE ANTELOPE 48.65N 104.40W
06/10/2021 E60 MPH SHERIDAN MT TRAINED SPOTTER
0436 PM TSTM WND GST 4 SE ANTELOPE 48.65N 104.40W
06/10/2021 E60 MPH SHERIDAN MT TRAINED SPOTTER
0442 PM HAIL 4 SE ANTELOPE 48.65N 104.40W
06/10/2021 E1.50 INCH SHERIDAN MT TRAINED SPOTTER
SAME LOCATION AS 60 MPH WIND AT 436 PM.
0442 PM HAIL 4 SE ANTELOPE 48.65N 104.40W
06/10/2021 E1.50 INCH SHERIDAN MT TRAINED SPOTTER
SAME LOCATION AS 60 MPH WIND AT 436 PM.
0550 PM HAIL 22 N WIBAUX 47.30N 104.19W
06/10/2021 M1.75 INCH WIBAUX MT PUBLIC
QUARTER TO GOLF BALL SIZE HAIL.
0550 PM HAIL 22 N WIBAUX 47.30N 104.19W
06/10/2021 M1.75 INCH WIBAUX MT PUBLIC
QUARTER TO GOLF BALL SIZE HAIL.
0616 PM HAIL 9 ENE SAVAGE 47.50N 104.16W
06/10/2021 M1.75 INCH RICHLAND MT PUBLIC
.
0616 PM HAIL 9 ENE SAVAGE 47.50N 104.16W
06/10/2021 M1.75 INCH RICHLAND MT PUBLIC
0730 PM TSTM WND DMG 8 WSW CROW ROCK 46.87N 106.23W
06/10/2021 GARFIELD MT TRAINED SPOTTER
WEAKER TREE AT LEAST A FOOT IN DIAMETER
FELL. DRIFTING HAIL ESTIMATED AS PEA SIZE.
0730 PM TSTM WND DMG 8 WSW CROW ROCK 46.87N 106.23W
06/10/2021 GARFIELD MT TRAINED SPOTTER
WEAKER TREE AT LEAST A FOOT IN DIAMETER
FELL. DRIFTING HAIL ESTIMATED AS PEA SIZE.
0752 PM NON-TSTM WND GST 2 E FORT PECK 48.01N 106.40W
06/10/2021 M60 MPH MCCONE MT MESONET
ALONG FRONTAL PASSAGE- MESONET STATION GGWFP
2.4 E FORT PECK (GGWWFO).
0752 PM NON-TSTM WND GST 2 E FORT PECK 48.01N 106.40W
06/10/2021 M60 MPH MCCONE MT MESONET
ALONG FRONTAL PASSAGE- MESONET STATION GGWFP
2.4 E FORT PECK (GGWWFO).
0755 PM HAIL 10 WNW MCCLOUD 46.95N 105.80W
06/10/2021 E3.00 INCH PRAIRIE MT TRAINED SPOTTER
3 INCH HAIL AND TORRENTIAL RAINFALL.
0755 PM TSTM WND DMG 10 WNW MCCLOUD 46.95N 105.80W
06/10/2021 PRAIRIE MT TRAINED SPOTTER
ASH TREES BROKEN ABOUT HALFWAY UP. APPLE
TREES AND AN 80-YEAR-OLD SPRUCE TREE BLOWN
DOWN.
0755 PM TSTM WND DMG 10 WNW MCCLOUD 46.95N 105.80W
06/10/2021 PRAIRIE MT TRAINED SPOTTER
ASH TREES BROKEN ABOUT HALFWAY UP. APPLE
TREES AND AN 80-YEAR-OLD SPRUCE TREE BLOWN
DOWN.
0755 PM HAIL 10 WNW MCCLOUD 46.95N 105.80W
06/10/2021 E3.00 INCH PRAIRIE MT TRAINED SPOTTER
3 INCH HAIL AND TORRENTIAL RAINFALL.
0800 PM HAIL 19 NW TERRY 46.99N 105.60W
06/10/2021 M2.00 INCH PRAIRIE MT TRAINED SPOTTER
.
0800 PM HAIL 19 NW TERRY 46.99N 105.60W
06/10/2021 M2.00 INCH PRAIRIE MT TRAINED SPOTTER
0808 PM TSTM WND GST 13 NW MCCLOUD 47.03N 105.80W
06/10/2021 M59 MPH PRAIRIE MT MESONET
MESONET STATION LCFM8 MCCLOUD 13WNW/BIG
SHEEP MTN.
0808 PM TSTM WND GST 13 NW MCCLOUD 47.03N 105.80W
06/10/2021 M59 MPH PRAIRIE MT MESONET
MESONET STATION LCFM8 MCCLOUD 13WNW/BIG
SHEEP MTN.
0812 PM NON-TSTM WND GST 3 ENE WOLF POINT 48.10N 105.58W
06/10/2021 M66 MPH ROOSEVELT MT ASOS
FRONTAL PASSAGE- WITH A SUSTAINED WIND OF 44
MPH. FROM ASOS STATION KOLF WOLF POINT
AIRPORT.
0812 PM NON-TSTM WND GST 3 ENE WOLF POINT 48.10N 105.58W
06/10/2021 M66 MPH ROOSEVELT MT ASOS
FRONTAL PASSAGE- WITH A SUSTAINED WIND OF 44
MPH. FROM ASOS STATION KOLF WOLF POINT
AIRPORT.
0815 PM TSTM WND GST 8 WSW LINDSAY 47.18N 105.31W
06/10/2021 E75 MPH DAWSON MT PUBLIC
HURRICANE-FORCE WIND GUSTS. TELEPHONE POLES
READY TO BLOW OVER. 75-YEAR-OLD TREES BLOWN
OVER.
0815 PM HAIL 8 WSW LINDSAY 47.18N 105.31W
06/10/2021 E2.75 INCH DAWSON MT PUBLIC
BASEBALL-SIZED AND LARGER HAIL.
0815 PM HAIL 9 WNW LINDSAY 47.28N 105.33W
06/10/2021 M2.00 INCH DAWSON MT TRAINED SPOTTER
TWITTER PHOTO OF HAIL MEASUREMENT WITH HAIL
COVERING THE GROUND.
0815 PM HAIL 9 WNW LINDSAY 47.28N 105.33W
06/10/2021 M2.00 INCH DAWSON MT TRAINED SPOTTER
TWITTER PHOTO OF HAIL MEASUREMENT WITH HAIL
COVERING THE GROUND.
0815 PM HAIL 8 WSW LINDSAY 47.18N 105.31W
06/10/2021 E2.75 INCH DAWSON MT PUBLIC
BASEBALL-SIZED AND LARGER HAIL.
0815 PM TSTM WND GST 8 WSW LINDSAY 47.18N 105.31W
06/10/2021 E75 MPH DAWSON MT PUBLIC
HURRICANE-FORCE WIND GUSTS. TELEPHONE POLES
READY TO BLOW OVER. 75-YEAR-OLD TREES BLOWN
OVER.
0818 PM HAIL 5 SW LINDSAY 47.17N 105.24W
06/10/2021 E3.00 INCH DAWSON MT TRAINED SPOTTER
CALL WITH REPORT OF TEA CUP SIZE HAIL.
0818 PM HAIL 5 SW LINDSAY 47.17N 105.24W
06/10/2021 E3.00 INCH DAWSON MT TRAINED SPOTTER
CALL WITH REPORT OF TEA CUP SIZE HAIL.
0828 PM HEAVY RAIN 8 NE LINDSAY 47.28N 105.02W
06/10/2021 M1.50 INCH DAWSON MT PUBLIC
RAINFALL WITH 1.5 INCHES TOTAL AT THIS TIME.
0828 PM HEAVY RAIN 8 NE LINDSAY 47.28N 105.02W
06/10/2021 M1.50 INCH DAWSON MT PUBLIC
RAINFALL WITH 1.5 INCHES TOTAL AT THIS TIME.
0835 PM HAIL 8 NNE LINDSAY 47.33N 105.12W
06/10/2021 E1.00 INCH DAWSON MT UNKNOWN
DIME TO QUARTER-SIZED HAIL. 0.13 INCHES OF
RAIN MEASURED.
0835 PM HAIL 8 NNE LINDSAY 47.33N 105.12W
06/10/2021 E1.00 INCH DAWSON MT UNKNOWN
DIME TO QUARTER-SIZED HAIL. 0.13 INCHES OF
RAIN MEASURED.
0838 PM TSTM WND GST 8 NNE CIRCLE 47.52N 105.52W
06/10/2021 E79 MPH MCCONE MT TRAINED SPOTTER
THIS GUST IS LIKELY ENHANCED BY THE COLD
FRONT COMING THROUGH AS WELL, THE STORM IS
MOSTLY SOUTH OF THIS AREA.
0838 PM TSTM WND GST 8 NNE CIRCLE 47.52N 105.52W
06/10/2021 E79 MPH MCCONE MT TRAINED SPOTTER
THIS GUST IS LIKELY ENHANCED BY THE COLD
FRONT COMING THROUGH AS WELL, THE STORM IS
MOSTLY SOUTH OF THIS AREA.
0840 PM HEAVY RAIN 3 N LUSTRE 48.44N 105.88W
06/10/2021 M4.00 INCH VALLEY MT PUBLIC
RAINFALL ONGOING WITH 4 INCHES TOTAL AS OF
8:40 PM.
0840 PM HEAVY RAIN 3 N LUSTRE 48.44N 105.88W
06/10/2021 M4.00 INCH VALLEY MT PUBLIC
RAINFALL ONGOING WITH 4 INCHES TOTAL AS OF
8:40 PM.
0842 PM NON-TSTM WND DMG 7 NNW BLOOMFIELD 47.50N 104.98W
06/10/2021 DAWSON MT PUBLIC
CORRECTS PREVIOUS NON-TSTM WND DMG REPORT
FROM 7 NNW BLOOMFIELD. MULTIPLE TREES DOWN,
ONE OF WHICH BROKE THROUGH A HOUSE WINDOW.
0845 PM HAIL 8 S RICHEY 47.53N 105.07W
06/10/2021 E1.00 INCH DAWSON MT PUBLIC
GROUND WHITE WITH HAIL ONGOING- UP TO
QUARTER SIZE.
0845 PM HAIL 8 S RICHEY 47.53N 105.07W
06/10/2021 E1.00 INCH DAWSON MT PUBLIC
GROUND WHITE WITH HAIL ONGOING- UP TO
QUARTER SIZE.
0848 PM TSTM WND GST 8 S RICHEY 47.53N 105.07W
06/10/2021 E70 MPH DAWSON MT PUBLIC
ESTIMATED 70 MPH WIND GUST WITH TREE
BRANCHES DOWN.
0848 PM TSTM WND GST 8 S RICHEY 47.53N 105.07W
06/10/2021 E70 MPH DAWSON MT PUBLIC
ESTIMATED 70 MPH WIND GUST WITH TREE
BRANCHES DOWN.
0900 PM TSTM WND GST 12 SSE SPROLE 47.95N 104.94W
06/10/2021 M61 MPH RICHLAND MT MESONET
MESONET STATION FW2498 BADGER CREEK.
0900 PM TSTM WND GST 4 WNW MIDWAY 47.53N 104.39W
06/10/2021 M66 MPH RICHLAND MT MESONET
MESONET STATION FW8536 SAVAGE.
0900 PM TSTM WND GST 1 SSW MIDWAY 47.50N 104.33W
06/10/2021 M66 MPH RICHLAND MT MESONET
MESONET STATION DW8636 SIDNEY.
0900 PM TSTM WND GST 12 SSE SPROLE 47.95N 104.94W
06/10/2021 M61 MPH RICHLAND MT MESONET
CORRECTS PREVIOUS TSTM WND GST REPORT FROM
12 SSE SPROLE. MESONET STATION FW2498 BADGER
CREEK.
0900 PM TSTM WND GST 1 SSW MIDWAY 47.50N 104.33W
06/10/2021 M66 MPH RICHLAND MT MESONET
MESONET STATION DW8636 SIDNEY.
0900 PM TSTM WND GST 4 WNW MIDWAY 47.53N 104.39W
06/10/2021 M66 MPH RICHLAND MT MESONET
MESONET STATION FW8536 SAVAGE.
0900 PM TSTM WND GST 8 S RICHEY 47.53N 105.07W
06/10/2021 E75 MPH DAWSON MT PUBLIC
ESTIMATED WINDS OF OVER 70 MPH WITH TREES
THAT HAVE LOST LEAVES AND WINDOWS OUT.
0900 PM HAIL 8 S RICHEY 47.53N 105.08W
06/10/2021 E1.00 INCH DAWSON MT PUBLIC
ESTIMATED HAIL AROUND A QUARTER SIZE.
0900 PM HAIL 8 S RICHEY 47.53N 105.08W
06/10/2021 E1.00 INCH DAWSON MT PUBLIC
ESTIMATED HAIL AROUND A QUARTER SIZE.
0900 PM TSTM WND GST 8 S RICHEY 47.53N 105.07W
06/10/2021 E75 MPH DAWSON MT PUBLIC
ESTIMATED WINDS OF OVER 70 MPH WITH TREES
THAT HAVE LOST LEAVES AND WINDOWS OUT.
0910 PM TSTM WND GST 1 NE LAMBERT 47.70N 104.60W
06/10/2021 M70 MPH RICHLAND MT MESONET
MESONET STATION DW8633 LAMBERT.
0910 PM TSTM WND GST 1 NE LAMBERT 47.70N 104.60W
06/10/2021 M70 MPH RICHLAND MT MESONET
MESONET STATION DW8633 LAMBERT.
0914 PM TSTM WND GST 7 NW SIDNEY 47.79N 104.25W
06/10/2021 M74 MPH RICHLAND MT PUBLIC
FROM BRORSON NDAWN MESONET STATION.
0914 PM TSTM WND GST 7 NW SIDNEY 47.79N 104.25W
06/10/2021 M74 MPH RICHLAND MT PUBLIC
FROM BRORSON NDAWN MESONET STATION.
0916 PM TSTM WND GST 7 NW SIDNEY 47.79N 104.25W
06/10/2021 M90 MPH RICHLAND MT PUBLIC
FROM THE NDAWN MESONET- BRORSON STATION.
0916 PM TSTM WND GST 7 NW SIDNEY 47.79N 104.25W
06/10/2021 M90 MPH RICHLAND MT PUBLIC
FROM THE NDAWN MESONET- BRORSON STATION.
0924 PM TSTM WND GST SIDNEY 47.72N 104.16W
06/10/2021 E74 MPH RICHLAND MT STORM CHASER
ESTIMATED HURRICANE FORCE WINDS.
0924 PM TSTM WND GST SIDNEY 47.72N 104.16W
06/10/2021 E74 MPH RICHLAND MT STORM CHASER
ESTIMATED HURRICANE FORCE WINDS.
1001 PM TSTM WND GST 2 N WOOLEY 47.79N 104.11W
06/10/2021 M74 MPH RICHLAND MT STORM CHASER
.
1001 PM TSTM WND GST 2 N WOOLEY 47.79N 104.11W
06/10/2021 M74 MPH RICHLAND MT STORM CHASER
1003 PM TSTM WND GST 8 NNE SNOWDEN 48.14N 104.05W
06/10/2021 M78 MPH ROOSEVELT MT DEPT OF HIGHWAYS
US-2 @ STATE LINE DOT SITE.
1018 PM TSTM WND GST 8 E BAINVILLE 48.14N 104.05W
06/10/2021 M80 MPH ROOSEVELT MT DEPT OF HIGHWAYS
US 2 AT STATELINE DOT SITE.
1058 PM TSTM WND GST 2 SE MEDICINE LAKE 48.49N 104.48W
06/10/2021 M65 MPH SHERIDAN MT MESONET
MEDICINE LAKE RAWS SITE (MLKM8) REPORTED 65
MPH WIND GUSTS IN THE HOUR LEADING UP TO
10:58 PM.
1110 PM TSTM WND GST 7 W RESERVE 48.61N 104.61W
06/10/2021 E80 MPH SHERIDAN MT PUBLIC
PUBLIC ESTIMATED 80 MPH WIND GUSTS, WHICH
MOVED THEIR OUTDOOR PROPANE TANK.
&&The national radar mosaic for the moment the first event began.
3 heavy rain. Local standard time, as filed.
Public reported, via Facebook, heavy rain totaling 3.8 inches from overnight.
Public reported, via Facebook, a rainfall total of 2.18 inches near the town of Peerless.
Public reported, via Facebook, a rainfall total of 2 inches from overnight in the town of Flaxville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2021Every state in 2021This day in weather historyWarnings in Montana, June 2021
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: 969391, 969394, 969395.