Hail, Roseau
- When
- July 29, 8:25 PM CST
- Where
- Roseau County, 0.45 mi E of Pinecreek Arpt
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 49.000, -95.970
Dime to quarter sized hail fell.
Hail and Damaging Wind in Minnesota, July 29, 2012
A thunderstorm complex over southern Manitoba moved southeast during the evening of July 29th, eventually affecting areas around the Lake of the Woods with some large hail. A few other thunderstorms also fired up along the surface boundary, which by sunset extended from the Lake of the Woods to Grand Forks/East Grand Forks to near Valley City.
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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 9
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 FGF wrote it up.
A thunderstorm complex over southern Manitoba moved southeast during the evening of July 29th, eventually affecting areas around the Lake of the Woods with some large hail. A few other thunderstorms also fired up along the surface boundary, which by sunset extended from the Lake of the Woods to Grand Forks/East Grand Forks to near Valley City.
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 Grand Forks, ND wrote its last area forecast discussion before the first event at Jul 29, 7:45 PM CST, 40 minutes earlier.
Area forecast discussion, Jul 29, 7:45 PM CST, 40 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE GRAND FORKS ND 845 PM CDT SUN JUL 29 2012 .DISCUSSION... TSTM CHANCES ALONG BOUNDARY IS IN QUESTION. MAIN COMPLEX IN MANITOBA MOVING TOWARD LAKE OF THE WOODS REGION. FAR NORTHEAST FCST AREA IS IN SVR WATCH. CELLS ALONG THE REST OF THE FRONTAL BOUNDARY SOUTHWEST INTO ERN ND HAVE HAD A MUCH HARDER TIME GETTING GOING...BUT A FEW ARE TRYING...WITH ONE NR JMS-VCY A BIT STRONGER. UNSURE HOW MUCH WILL CONTINUE PAST DARK...BUT 850 MB INFLOW INTO MANITOBA COMPLEX MAY MAINTAIN THAT. TWEEKED POPS DOWNWARD IN MOST AREAS AS COVERAGE OUTSIDE OF NORTHEAST FCST AREA WILL BE ISOLATED. && .AVIATION... CHANCE OF ANY STORM HITTING A TAF SITE TONIGHT IS QUITE LOW BUT MAINTAINED SOME VCTS UNTIL PICTURE IS CLEARER. VFR OUTSIDE OF ANY STORM AS CLOUD BASES ARE QUITE HIGH. && .PREV DISCUSSION... /ISSUED 316 PM CDT SUN JUL 29 2012/ ..ISOLATED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON INTO THIS EVENING... SYNOPSIS... AT 3PM A SURFACE BOUNDARY EXTENDED FROM A LOW PRESSURE CENTER WEST OF WINNIPEG MB... SOUTHWESTWARD ALG A SARLES-RUGBY- WASHBURN-HETTINGER LINE. ALONG AND AHEAD OF THAT LINE... THROUGH ERN ND AND NWRN MN... SURFACE BASED CAPE VALUES OF FROM 2000-4000 J/KG AND LIS FROM -5 TO -10 WERE COMMON. AS DIURNAL HEATING AND BLAYER MOISTURE CONVERGENCE MAXIMIZES AHEAD OF THIS BOUNDARY WE CAN EXPECT AREAS OF THUNDERSTORMS TO DEVELOP ACROSS NERN AND ECNTRL ND YET THIS AFTERNOON... AND PROGRESS EASTWARD ACROSS THE RRV INTO NWRN MN THROUGH THE EVENING. AT THIS POINT... THE FOCUS FOR CONVECTION IS STILL QUITE DIFFUSE SO MORE WIDESPREAD CONVECTIVE CLUSTERS ARE EXPECTED EARLY ON. HOWEVER... AS CONVECTION GETS MORE ORGANIZED LATE THIS AFTERNOON THERE IS A POSSIBILITY FOR THE DEVELOPMENT OF ISOLATED SEVERE THUNDERSTORMS WITH THE POTENTIAL FOR SOME LARGER HAIL AND DOWNBURST WINDS. SOUTHERLY FLOW SHOULD INCREASE A BIT AHEAD OF THE BOUNDARY... BUT A STRONG LOW LEVEL JET IS NOT EVIDENT OR EXPECTED ATTM. A CONVECTIVE OUTLOOK REMAINS IN EFFECT FOR A SLIGHT RISK OF SEVERE WEATHER MAINLY ALONG AND NORTH OF THE HWY 200 CORRIDOR FROM LATE AFTERNOON INTO EARLY EVENING. SHORT TERM (MONDAY THROUGH WED)... SURFACE BOUNDARY PUSHES ACROSS NCNTRL AND WCNTRL MN LATE THIS EVENING /FM 06 TO 09Z/ WITH MOST OF THE FA SEEING INCREASING NORTHWESTERLY FLOW... WITH A MUCH MORE STABLE AND DRYING AIRMASS FOLLOWING THE FROPA. SOME RESIDUAL CONVECTION AND SHOWERY CONDITIONS REMAINS POSSIBLE ACROSS THE LAKE OF THE WOODS AREA INTO EARLY MORNING WITH DEEPENING LOW PRESSURE POSSIBLE OVER THE ARROWHEAD. MONDAY SHOULD SEE GENLY FAIR SKIES AND LIGHT NORTHERLY FLOW AND A SLIGHTLY DRIER AIRMASS... KEEPING HEAT INDICES AND TEMPERATURES GENLY IN THE MIDDLE 80S. SEASONABLY MILD AND DRY CONDITIONS WILL PERSIST OVERNIGHT INTO EARLY TUESDAY... AS A SURFACE HIGH PRESSURE RIDGE TRANSITS THE AREA. OVERALL AIRMASS TEMPERATURES WILL REMAIN QUITE WARM AS AN H5 RIDGE CONTINUES TO BUILD INTO THE WESTERN DKTAS FROM MONDAY INTO TUESDAY. BY MIDDAY TUESDAY... SOUTHERLY RETURN FLOW WILL DEVELOP AHEAD OF THE NEXT APPROACHING SHRTWV TROF... THIS ONE CURRENTLY PROJECTED TO OVERTOP THE MID LVL RIDGE ALG THE MT/ND BORDER AND RIDE A NW FLOW PATTERN INTO EASTERN ND AND NWRN MN LATE ON TUESDAY INTO EARLY WEDNESDAY. WEDNESDAY COULD SEE GENLY FAIR... BUT WARM AND HUMID CONDITIONS PERSISTING. MODEL GUIDANCE SHOWS THE H5 RIDGE FLATTENING A BIT ON WEDNESDAY IN RESPONSE TO A SOMEWHAT STRONGER SHRTWV TROF DIGGING INTO THE NORTHERN ROCKIES... SIGNALING A TRANSITION TO A SOMEWHAT COOLER AND WETTER PATTERN FOR THE LATE WEEK PERIOD. LONG TERM (WED NITE THROUGH SUN)... CWFA REMAINS ON THE EAST LIMB OF UPPER RIDGE WITH PREVALENT WEST/NORTHWEST FLOW. ABOVE AVERAGE TEMPERATURE REGIME WILL TRANSITION TO BELOW AVERAGE LATE IN EXTENDED WITH POTENT UPPER WAVE...ADVERTISED FOR SOME TIME...EXPECTED TO PUSH STRONG EARLY AUGUST FRONT THROUGH THE CWFA. A WAVE MOVING ALONG BAROCLINIC ZONE WEDNESDAY WILL PAIR WITH LOW LEVEL WAA AND MOISTURE SURGE ALONG/AHEAD OF FRONT TO PRODUCE CONVECTIVE COMPLEX ACROSS THE VALLEY REGION. DESPITE THE WIND SHIFT VERY WARM AIRMASS WILL FOLLOW BOUNDARY SO EXPECT LITTLE CHANGE IN TEMPERATURES. DEPENDING ON SPEED OF BOUNDARY...BEST RISK OF RAIN SHOULD BE DONE BY LATE IN THE DAY. HIGH PRESSURE EXPECTED OVER THE REGION ON THURSDAY....RESULTING IN LOWEST RISK FOR PRECIPITATION. MUCH STRONGER UPPER WAVE AND FRONT WILL IMPACT AREA ON FRIDAY WITH VARIOUS SOLUTIONS ALL FORECASTING ANOTHER CONVECTIVE COMPLEX AT VARIOUS TIMES OF THE DAY. COOLER TEMPERATURES WILL FOLLOW ON SATURDAY...ANY POPS REFLECTIVE OF DESTABILIZATION ATTRIBUTABLE TO COOL POOL ALOFT. HIGH PRESSURE BUILDS BACK IN SUNDAY TO END NEXT WEEKEND ON A DRY NOTE. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && RIDDLE/GUST
Hazardous weather outlook, Jul 29, 2:59 AM CST, 17 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 359 AM CDT SUN JUL 29 2012 MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-301200- WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS- WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE- EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN- SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER- PEMBINA-BENSON-RAMSEY-EASTERN WALSH-EDDY-NELSON-GRAND FORKS- GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT-RICHLAND- WESTERN WALSH- 359 AM CDT SUN JUL 29 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA LATER THIS AFTERNOON INTO THE EVENING HOURS. IT APPEARS THE MAIN HAZARD WILL BE STRONG WINDS ALONG WITH SOME LARGE HAIL AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORM CHANCES EXIST TUESDAY NIGHT INTO WEDNESDAY AND AGAIN LATE THURSDAY INTO SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND EVENING. TG
In the hours before
Special weather statement, Jul 29, 7:11 PM CST, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 811 PM CDT SUN JUL 29 2012 NDZ038-300145- BARNES ND- 811 PM CDT SUN JUL 29 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BARNES COUNTY UNTIL 845 PM CDT... AT 809 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM 10 MILES WEST OF VALLEY CITY...MOVING TO THE EAST AT 50 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THE STORM. THE STORM WILL BE NEAR... VALLEY CITY AROUND 820 PM CDT. ORISKA AROUND 835 PM CDT. FOR MOTORISTS ON INTERSTATE 94...THE STORM WILL BE BETWEEN...MILE MARKER 282 AROUND 810 PM CDT...AND MILE MARKER 305 AROUND 835 PM CDT... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. LAT...LON 4706 9771 4676 9772 4680 9841 4707 9840 TIME...MOT...LOC 0111Z 271DEG 42KT 4691 9817 EWENS
Local storm report, Jul 29, 7:36 PM CST, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
836 PM CDT SUN JUL 29 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0827 PM HAIL VALLEY CITY 46.92N 98.01W
07/29/2012 E0.75 INCH BARNES ND PUBLIC
&&
JAMSpecial weather statement, Jul 29, 7:57 PM CST, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 857 PM CDT SUN JUL 29 2012 NDZ027-300230- GRAND FORKS ND- 857 PM CDT SUN JUL 29 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GRAND FORKS COUNTY UNTIL 930 PM CDT... AT 850 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM NEAR LARIMORE...OR 23 MILES WEST OF GRAND FORKS...MOVING TO THE EAST AT 30 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THE STORM. THIS STORM HAS PRODUCED PEA SIZED HAIL THE STORM WILL BE NEAR... GRAND FORKS AFB AND EMERADO AROUND 905 PM CDT. GRAND FORKS AND THOMPSON AROUND 930 PM CDT. FOR MOTORISTS ON INTERSTATE 29...THE STORM WILL BE BETWEEN...MILE MARKER 129 AROUND 930 PM CDT...AND MILE MARKER 140 AROUND 925 PM CDT... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. LAT...LON 4800 9713 4774 9694 4781 9765 4799 9763 TIME...MOT...LOC 0156Z 275DEG 28KT 4789 9749 EWENS
Special weather statement, Jul 29, 7:58 PM CST, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
858 PM CDT SUN JUL 29 2012
MNZ005-006-300300-
LAKE OF THE WOODS MN-ROSEAU MN-
858 PM CDT SUN JUL 29 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ROSEAU AND WESTERN LAKE
OF THE WOODS COUNTIES UNTIL 1000 PM CDT...
AT 855 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
THUNDERSTORM 18 MILES NORTHWEST OF ROSEAU...MOVING TO THE EAST-SOUTHEAST
AT 35 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THE STORM.
THE STORM WILL BE NEAR...
ROSS AROUND 905 PM CDT.
ROSEAU AROUND 920 PM CDT.
SALOL AROUND 935 PM CDT.
WARROAD AROUND 950 PM CDT.
BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.
LAT...LON 4905 9494 4871 9512 4890 9618 4901 9609
4901 9516 4912 9516 4913 9515
TIME...MOT...LOC 0158Z 291DEG 29KT 4907 9592
DTRThe radar
The Fargo/Grand Forks radar (KMVX), 192 km away, was scanning. The volume nearest the first event began at 02:25 UTC.
Event by event
8 hail, 1 thunderstorm wind. Local standard time, as filed.
Hail, Roseau
- When
- July 29, 8:35 PM CST
- Where
- Roseau County, 0.45 mi W of Pinecreek
- Measured
- 0.75 in hail
- Reported by
- Public
- Coordinates
- 48.980, -95.940
Hail, Roseau
- When
- July 29, 8:50 PM CST
- Where
- Roseau County, 2.74 mi E of Greenbush
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 48.700, -96.120
Hail, Roseau
- When
- July 29, 8:55 PM CST
- Where
- Roseau County, 4.15 mi N of Roseau Arpt
- Measured
- 0.88 in hail
- Reported by
- Trained Spotter
- Coordinates
- 48.910, -95.700
Thunderstorm Wind, Roseau
- When
- July 29, 8:55 PM CST
- Where
- Roseau County, 0.45 mi W of Roseau
- Measured
- 65 kt (75 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 48.850, -95.760
One camper was flipped, a shed under construction was blown over, and numerous trees were blown down.
Hail, Roseau
- When
- July 29, 8:58 PM CST
- Where
- Roseau County, 4.53 mi NNW of Roseau
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 48.910, -95.790
Wind gusts up to about 45 mph also occurred with the hail.
Hail, Roseau
- When
- July 29, 8:58 PM CST
- Where
- Roseau County, Badger
- Measured
- 0.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 48.780, -96.020
Hail, Polk
- When
- July 29, 9:29 PM CST to 9:34 PM CST
- Where
- Polk County, 2.76 mi N of Eldred
- Measured
- 0.75 in hail
- Reported by
- Public
- Coordinates
- 47.720, -96.800
Dime to quarter sized hail fell on and off along with very heavy rain.
Hail, Polk
- When
- July 29, 9:30 PM CST
- Where
- Polk County, 2.27 mi NNE of Eldred
- Measured
- 0.88 in hail
- Reported by
- Public
- Coordinates
- 47.710, -96.780
Dime to nickel sized hail fell.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flooding and Heavy Rain in Arizona, July 29, 2012
- Tornado and Hail in Florida, July 29 to 31, 2012
- Flash Flooding and Lightning Strike in Arizona, July 29, 2012
- Wildfire in Oklahoma, July 29, 2012
- Damaging Winds in Missouri, July 29, 2012
- Damaging Winds in South Carolina, July 29, 2012
- Damaging Winds and Lightning Strike in Georgia, July 29, 2012
- Damaging Winds in Arizona, July 29, 2012
- Damaging Wind in Kansas, July 29, 2012
- Damaging Wind in Michigan, July 29, 2012
- Lightning Strike in South Carolina, July 29, 2012
- Damaging Winds in Kansas, July 29, 2012
More
Every storm in Minnesota in 2012Every state in 2012This day in weather historyWarnings in Minnesota, July 2012
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 2026-09-24. Each event’s entry at NCEI: 390099, 390100, 390104, 390102, 390105, 390101, 390106, 390107, 390103.