With a strong low pressure system approaching the region from the southwest, a highly-unstable atmosphere and warm, moist surface conditions produced another round of organized severe thunderstorms across portions of northeast Montana.
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.
With a strong low pressure system approaching the region from the southwest, a highly-unstable atmosphere and warm, moist surface conditions produced another round of organized severe thunderstorms across portions of northeast Montana.
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, 8:19 AM MST, 26 minutes earlier.
Area Forecast Discussion National Weather Service GLASGOW MT 919 AM MDT SAT JUN 11 2016 .SHORT TERM...for northeast Montana...today through Mon... ...Another round of severe thunderstorms expected across portions of northeast Montana this afternoon and evening with large hail and damaging winds... Update... The inherited forecast is in fine shape depicting the severe weather threat for now. Those with any interests in the area should monitor for latest watches and warnings and be prepared to seek shelter. With gusty winds continuing this evening decided to extend the Lake Wind Advisory until 10 PM. Maliawco Previous Discussion... A low pressure center over Southeastern Montana will track slowly over the next 24 hours into Northwestern North Dakota and then into Minnesota by Monday morning. This will be impact weather event for the short term. This morning some remnant thunderstorms will dot the region and should be gone by 9 am for most areas. Then a brief rest break before the next round of thunderstorms begins after the noon hour. Instability parameters remain strong across all the guidance suites for Northeastern Montana. Best severe weather parameters remain for areas along the North Dakota border closer to the surface low and front. The SPC convective day outlines the finer details which are a reasonable solution for today's convective event expected for the region and thus followed with enhanced convective wording in the forecast. After this system shifts eastward overnight with a break for Sunday from thunderstorms until Monday afternoon when the next chance exists for convective activity for the region. In other news the Lake Wind Advisory will continue, however does look like it can be cancelled early if the guidance is correct in a lull in the winds coming around mid day. Proton .LONG TERM...Mon night through Sat... The extended forecast will continue to feature southwest flow aloft for the western US and Eastern Montana. This will bring some thunderstorms scattered about the region. The exact pin point of which days are better than others will be hard to depict at this time. Went with a general forecast with low chances for favored areas in this flow. As the days move into the short term this week the better highlighting of impact convective events can be outlined. For the general June forecast in Northeast Montana of Isolated afternoon and evening thunderstorms is a safe play during this active period. Not many adjustments made tonight due to the severe ongoing across the area. Proton && .AVIATION... Synopsis: A low pressure center over Southeastern Montana will slowly move northeast into Northwestern North Dakota by 12Z Sunday morning. This low will continue to bring low level moisture into the region aiding in the development of afternoon and evening thunderstorms...some which may have hail and strong gusty wind through the period. WX: Generally vfr conditions are expected through 18Z then look for more thunderstorms to develop. Any thunderstorms that do develop will have the capability to produce large hail, very strong and gusty wind with them. Wind: Outside of Thunderstorms expect east wind to transition slowly into the north at all locations around 00Z. && .GLASGOW WATCHES/WARNINGS/ADVISORIES... Lake Wind Advisory until 10 PM MDT this evening For Fort Peck Lake for Central and Southern Valley...Garfield...McCone. && weather.gov/glasgow
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 325 AM MDT SAT JUN 11 2016 MTZ016>027-059>062-120900- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- DANIELS-SHERIDAN-WESTERN ROOSEVELT-PETROLEUM-GARFIELD-MCCONE- RICHLAND-DAWSON-PRAIRIE-WIBAUX-NORTHERN PHILLIPS- SOUTHWEST PHILLIPS-NORTHERN VALLEY-EASTERN ROOSEVELT- 325 AM MDT SAT JUN 11 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT ACROSS NORTHEAST MONTANA. SOME STORMS WILL BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. LOCALLY HEAVY RAINFALL IS LIKELY IN SOME AREAS. A LAKE WIND ADVISORY IS IN EFFECT FOR THE EAST HALF OF FORT PECK THROUGH 4 PM THIS AFTERNOON FOR EAST WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
719 AM MDT SAT JUN 11 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1120 PM NON-TSTM WND DMG 3 SW CIRCLE 47.38N 105.64W
06/10/2016 MCCONE MT TRAINED SPOTTER
BARN BLOWN DOWN AND CAMPER ROLLED OVER
&&
BBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
851 AM MDT SAT JUN 11 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0145 AM HAIL 5 NE GLASGOW 48.25N 106.56W
06/11/2016 E1.00 INCH VALLEY MT PUBLIC
&&
AEHSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GLASGOW MT 855 AM MDT SAT JUN 11 2016 MTZ018-059-061-111600- NORTHERN PHILLIPS MT-DANIELS MT-NORTHERN VALLEY MT- 855 AM MDT SAT JUN 11 2016 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN VALLEY...NORTHWESTERN DANIELS AND NORTHEASTERN PHILLIPS COUNTIES UNTIL 1000 AM MDT... AT 853 AM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 27 MILES EAST OF WHITEWATER...MOVING EAST AT 50 MPH. NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... OPHEIM...RICHLAND...PORT OF OPHEIM...GLENTANA AND THOENY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN GLASGOW. && LAT...LON 4900 10589 4881 10582 4875 10713 4900 10740 TIME...MOT...LOC 1453Z 263DEG 45KT 4889 10705 RJM
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GLASGOW MT
901 AM MDT SAT JUN 11 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM TSTM WND GST 18 N WINNETT 47.26N 108.35W
06/10/2016 E70.00 MPH PETROLEUM MT STORM CHASER
0845 PM HAIL 18 N WINNETT 47.26N 108.35W
06/10/2016 E2.50 INCH PETROLEUM MT STORM CHASER
&&
AEHPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GLASGOW MT
902 AM MDT SAT JUN 11 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1120 PM TSTM WND DMG 3 SW CIRCLE 47.38N 105.64W
06/10/2016 MCCONE MT TRAINED SPOTTER
BARN BLOWN DOWN AND CAMPER ROLLED OVER
&&
AEHPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GLASGOW MT
907 AM MDT SAT JUN 11 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM TSTM WND GST 19 N WINNETT 47.28N 108.35W
06/10/2016 E70.00 MPH PETROLEUM MT STORM CHASER
0845 PM HAIL 19 N WINNETT 47.28N 108.35W
06/10/2016 E2.50 INCH PETROLEUM MT STORM CHASER
&&
AEHThe Glasgow radar (KGGW), 90 km away, was scanning. The volume nearest the first event began at 15:46 UTC.
4 hail. Local standard time, as filed.
Nickel sized hail was reported at the Port of Opheim border crossing in northern Valley County.
Trained spotter reported quarter sized hail.
Trained spotter reported trees shredded from quarter sized hail.
Trained spotter reported quarter sized hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2016Every state in 2016This day in weather historyWarnings in Montana, June 2016
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: 644996, 644997, 644998, 644999.