9 thunderstorm wind, 3 hail, as filed by the National Weather Service.
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 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 28, 7:33 PM CST, 2 hours 42 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 833 PM CDT FRI JUL 28 2006 .UPDATE... PER WATER VAPOR A 500 MB SHORT WAVE WAS NOTED MOVING INTO SW MANITOBA. AN AREA OF MOISTURE NEAR 500 MB WAS NOTED MOVING OVER MOST OF ND EARLY THIS EVENING...AND IN AREAS OF NW SD/SW ND WHERE TEMPS REACHED NR 110F HIGH BASED TSTMS FORMED AND ARE MOVING EAST THRU SOUTH CENTRAL ND AND NW SD. EXPECT SVR POTENTIAL AND TSTM COVERAGE TO INCREASE QUICKLY OVER THE NEXT 1-3 HOURS. 850 MB WINDS WILL INCREASE TO 30-35 KTS AND OVERRUN THE STRONG 850 MB FRONT OVER FAR SRN ND. SFC FRONT HAS SAGGED INTO FAR NRN SD...WITH ALL OF THE FCST AREA NOW IN NORTHEAST WINDS. VERY TIGHT TEMP/MOISTURE GRADIENT WITH FRONT ALONG SOUTH DAKOTA BORDER WITH LOW 50 DEW PTS ALONG MANITOBA BORDER TO MID 70 DEW PTS IN THE FAR SOUTH. ALTHOUGH THERE HAS BEEN CONSIDERABLE MOVEMENT SOUTHWARD OF DRIER SFC AIR IN THE PAST FEW HOURS WITH FARGO DEW PT FALLING TO NEAR 60 AT 01Z WHILE 70-75 DEW PTS REMAIN IN THE WADENA-FERGUS FALLS-WAHPETON AREAS. 00Z BISMARCK SOUNDING SHOWS A VERY CAPPED ENVIRONMENT WITH MOISTURE QUITE HIGH UP ROOTED ABV 12000 FT. AS LOW LEVEL JET DEVELOPS NEXT 1-3 HOURS IT WILL HELP SPREAD SOME RICHER 850 MB MOISTURE NORTHWARD OVER 850 THERMAL BOUNDARY ALONG SD/ND BORDER WITH VERY LARGE INCREASES IN THETA-E EXPECTED IN THE JMS-FAR-DTL CORRIDOR 03-06Z TIME PERIOD. THIS ADVECTION WILL SPREAD NORTHWARD REACHING THE GFK-BJI AREA 06-09Z. ATTM TSTMS MOVING INTO JAMESTOWN AREA ARE HIGH BASED...BUT AS 850-700 THERMAL AND MOISTURE FIELDS GET BETTER BASED WILL LOWER AND SUFICIENT STEEP LAPSE RATES IN THE 850-500 MB LAYER FOR INCREASINGLY STRONGER TSTMS AROUND 03Z. ALL MODELS HIGHLIGHT THE 03Z TIME PERIOD AS THE START OF THE MAIN TSTM ACTION...WITH NAM APPEARING TO BE A BIT BETTER DEFINED. EVOLUTION TO MCS SHOULD OCCUR PRETTY QUICKLY IN THE 06Z-09Z PERIOD TONIGHT AND THEN EXIT MINNESOTA PART OF FCST AREA AROUND 12Z OR SO. FREEZING LEVELS ARE QUITE HIGH IN THE 14500 TO 15000 FT RANGE...BUT WITH ELEVATED CONVECTION AND STRONG ISENTROPIC LIFT EXPECTED OVER THE FRONT OVERNIGHT STRONG ENOUGH UPDRAFTS SHOULD OCCUR FOR LARGE HAIL. IN ADDITION....EXAMINATION OF DOWNDRAFT CAPE REVEALS OVER 1500 J/KG AVBL THRU 06Z IN THE FAR SOUTH JUST NORTH OF THE SFC FRONT. WOULD APPEAR AN AREA FROM THE SFC FRONT NORTHWARD TO THE MIDDLE PART OF THE FCST WOULD STAND THE BEST THREAT FOR SEVERE TONIGHT WITH WIND THREAT PROBABLY CLOSER TO RICHER SFC MOISTURE JUST NORTH OF SFC FRONT ITSELF IN THE FAR SOUTHERN AREAS OF THE FCST AREA. SWODY1 AND HWOFGF CURRENTLY OUT EXPLAINS THINGS WELL AND WILL ISSUE NOWCAST TO HIGHLIGHT THREAT FOR RAPID SEVERE DEVELOPMENT OF CURENT ACTIVITY SPREADING INTO ECNTRL/SE ND. && .PREV DISCUSSION... (ISSUED 241 PM CDT FRI JUL 28 2006) SHORT TERM (THRU MON)...CHALLENGES ABOUND FOR THIS FORECAST DEALING MAINLY WITH THE EVOLUTION OF AN MCS OVERNIGHT. A FAIRLY POTENT COLD FRONT IS PUSHING SOUTH THIS AFTERNOON CURRENTLY RESIDING ALONG A LINE FROM KINL-KPKD-KBWP. THIS FRONT IS EXPECTED TO DROP ABOUT ANOTHER 50 MILES SE THEN STALL OUT OVERNIGHT BEFORE RETREATING NORTH AS A WARM FRONT ON SAT. A TIGHT TEMP/DEWPOINT GRADIENT HAS SET UP FROM NORTH TO SOUTH WITH TEMPS IN THE LOW 70S NORTH TO AROUND 100 DEGREES NEAR THE SD BORDER. THIS GRADIENT WILL ONLY ENHANCE THE INSTABILITY AND EFFECTIVE SHEAR NEEDED TO FUEL STORMS TONITE. AS AN UPPER LEVEL WAVE NOW SEEN IN NORTH CENTRAL MT SLIDES EAST...THE INTERACTION OF THIS FEATURE ALONG WITH STRONG SURFACE HEATING AND THE BOUNDARY WILL GENERATE STORMS STRETCHING FROM CENTRAL ND INTO NE MN. STORMS NORMALLY FORM 50-100 MILES NORTH OF THE BOUNDARY...WHICH WOULD PUT THE LIKELY CORRIDOR FOR THUNDER ALONG I-94. WE HAVE SEVERAL JET STRUCTURES AT WORK TONITE WITH AN 80KT SPEED MAX RIDING THE WESTERLIES ACROSS CENTRAL ND AND AN INCREASING H85 LLJ OF AROUND 30KTS POKING INTO SOUTH CENTRAL ND. THIS CREATES SUFFICIENT SPEED AND DIRECTIONAL SHEAR TO POSSIBLY SUSTAIN SUPERCELLS, WITH A BOW ECHO STRUCTURE MORE LIKELY. THE THUNDERSTORM COMPLEX SHOULD PROPAGATE W-E WITH A SOUTHERLY TURN AS THE LLJ VEERS CLOSER TO DAY BREAK ON SAT. THE STORMS SHOULD MOVE SWIFTLY, BUT WITH UP TO 2 INCHES OF PRECIPITABLE WATER...VERY HEAVY RAIN IS ANOTHER CONCERN. UNFORTUNATELY...NOT EVERYONE WILL BE IMPACTED BY THIS COMPLEX, BUT THOSE WHO SEE RAIN MAY GET MORE THAN THEY BARGAINED FOR. AS THE WARM FRONT RETREATS NORTH TOWARD THE CANADIAN BORDER BY EARLY SUNDAY...VERY HOT AIR WILL BE PULLED NORTH. MORE OF A SOUTHWESTERLY TRAJECTORY SETS UP ON SUN...WHICH IS A WARMING WIND...ALLOWING TEMPS TO EASILY EXCEED 100 DEGREES IN CENTRAL ND TAPERING TO THE MID 90S FURTHER NORTH AND EAST. ALSO DURING THIS TIME...DEWPOINTS REMAIN QUITE HIGH IN THE MID 60S RESULTING IN SWELTERING HEAT INDEX VALUES WELL OVER 105 DEGREES. THE HOT AIR WILL EFFECTIVE CAP US OFF FROM MUCH IF ANY CONVECTIVE DEVELOPMENT FROM SUN ON...BUT STORMS MAY TRY TO FORM ON THE PERIPHERY OF THE WARM AIR IN NRN MN...ESPECIALLY DURING THE OVERNIGHT HOURS AS THE NOCTURNAL LLJ INCREASES. FINALLY THE OFFENDING LOW PRESSURE SYSTEM AND ASSOCIATED FRONTS MAKE SOME EASTWARD PROGRESS ON MON...BUT IT SHOULD BE ANOTHER HOT DAY EAST OF THE RED RIVER WHERE SOUTHERLY WINDS WILL PREVAIL FOR ONE MORE DAY. LONG TERM (TUES THRU FRI)...GENERALLY ZONAL PATTERN FOR THE EARLY FORECAST PERIOD...WITH EMBEDDED SHORT WAVE SWINGING THROUGH ON TUESDAY...OFFERING BEST PRECIP. CHANCES TO THE SOUTH AND EAST. THIS TO BE FOLLOWED BY ANOTHER SWITCH TO NORTHWEST FLOW THURSDAY AND FRIDAY...ACCOMPANIED BY SEASONAL CONDITIONS WITH DAILY HIGHS NOT TOO FAR FROM 80. KEPT FORECAST DRY DURING THIS TIME FRAME...BUT INEVITABLY CHANCES FOR ISOLATED TRW WILL OCCUR IN THE NORTHWEST FLOW. AVIATION...INTRODUCED PROB30/TEMPO FOR SCATTERED THUNDER LATER THIS EVENING AND OVERNIGHT AS STORM COMPLEX MOVES THROUGH AREA. TRW RELATED WINDS MAY HAVE TO BE BOLSTERED IN NEW TAF ISSUANCE. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && RIDDLE
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE GRAND FORKS ND 319 PM CDT FRI JUL 28 2006 MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-292030- 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 COUNTY-EDDY-NELSON- GRAND FORKS-GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT- RICHLAND-WESTERN WALSH COUNTY- 319 PM CDT FRI JUL 28 2006 ...SEVERE THUNDERSTORMS POSSIBLE ACROSS EASTERN NORTH DAKOTA AND WESTERN MINNESOTA OVERNIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS WILL DEVELOP THIS EVENING AND MOVE EAST OVERNIGHT. THE PRIMARY THREAT FROM THESE STORMS WILL BE POTENTIALLY DESTRUCTIVE WINDS AND POSSIBLY LARGE HAIL. THE PRIME TIME FOR STORMS WILL MAINLY BE FROM AROUND MIDNIGHT TO 7 AM ON SATURDAY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY STORMS WILL BE ONGOING EARLY SATURDAY MORNING THEN VERY WARM AIR WITH POTENTIALLY LIFE THREATENING HEAT INDICIES OVER 100 DEGREES ENTER THE PICTURE FOR SUNDAY AND MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. JCA/AYD
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
927 PM CDT FRI JUL 28 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0440 PM HAIL 4 SE HALLOCK 48.73N 96.88W
07/27/2006 E0.88 INCH KITTSON MN PUBLIC
0440 PM TSTM WND DMG 4 SE HALLOCK 48.73N 96.88W
07/27/2006 KITTSON MN PUBLIC
SIGNIFICANT TREE DAMAGE DUE TO STRAIGHT LINE WINDS.
0450 PM FUNNEL CLOUD 3 ESE KENNEDY 48.63N 96.85W
07/27/2006 KITTSON MN PUBLIC
A FUNNEL CLOUD BEGAN TO DEVELOP UNDER A PERSISTENT WALL
CLOUD FORMATION AND WAS VIEWED BY A FARMER IN HIS FIELD
SOUTHEAST OF KENNEDY. THE WALL CLOUD APPEARED TO TURN TO
THE RIGHT OF ITS ORIGINAL SOUTHEAST PATH AND TOWARDS A
MORE SOUTHERLY DIRECTION AT THAT POINT. A TORNADIC
TOUCHDOWN INITIATED SEVERAL MINUTES LATER EAST OF
DONALDSON.
0458 PM HAIL 5 ENE DONALDSON 48.60N 96.80W
07/27/2006 M2.75 INCH KITTSON MN NWS STORM SURVEY
SEVERAL SQUARE MILES OF CROPS WERE SHATTERED OR FLATTENED
BY LARGE HAIL IN EASTERN DAVIS AND WESTERN SPRINGBROOK
TOWNSHIPS.
0501 PM HAIL 4 E DONALDSON 48.57N 96.81W
07/27/2006 E1.75 INCH KITTSON MN LAW ENFORCEMENT
0502 PM TORNADO 3 ENE DONALDSON 48.59N 96.84W
07/27/2006 F1 KITTSON MN NWS STORM SURVEY
A TORNADO TOUCHED DOWN IN A FIELD JUST NORTH OF HIGHWAY
11 AND TRAVELED FOR ABOUT 3.5 MILES BEFORE IT ENDED IN
MARSHALL COUNTY. TORNADIC WINDS SNAPPED SEVERAL
COTTONWOOD TREES AT A HOMESTEAD AND SWIRLED TREE BRANCHES
AROUND THE YARD. SMALLER TREE BRANCHES WERE LOFTED OVER A
MILE TO THE SOUTH BY THE TORNADO AND CROPS WERE SWIRLED
BY THE WINDS. THE TORNADO CONTINUED SOUTH BY
SOUTH-SOUTHEAST AND CROSSED INTO MARSHALL COUNTY ABOUT 5
ESE OF DONALDSON AROUND 509 PM. PEAK WINDS ARE ESTIMATED
AT 80 MPH.
0504 PM HAIL 9 NE STEPHEN 48.54N 96.74W
07/27/2006 E1.75 INCH MARSHALL MN PUBLIC
0509 PM TORNADO 6 NNE STEPHEN 48.53N 96.83W
07/27/2006 F1 MARSHALL MN NWS STORM SURVEY
A TORNADO CONTINUED FROM KITTSON COUNTY INTO MARSHALL
COUNTY AND TRACKED FOR ABOUT 1 MORE MILE TO THE SOUTH
UNTIL 512 PM. THE TORNADO BLEW OVER A ROAD SIGN AND
CAUSED ADDITIONAL EXTREME WIND STRESS AS CROPS WERE
SWIRLED BY THE WINDS. PEAK WINDS SPEEDS WERE ESTIMATED TO
80 MPH.
0629 PM HAIL 13 SW THIEF RIVER FALLS 47.98N 96.37W
07/27/2006 E0.88 INCH PENNINGTON MN PUBLIC
MARBLE TO NICKEL SIZED HAIL CONTINUED FOR ABOUT 5 MINUTES
NEAR THE RED LAKE COUNTY LINE UNTIL 634 PM.
0630 PM HAIL 1 NE DOROTHY 47.94N 96.43W
07/27/2006 M0.88 INCH RED LAKE MN PUBLIC
MARBLE TO NICKEL SIZED HAIL CONTINUED FOR ABOUT 5 MINUTES
UNTIL 635 PM.
0637 PM FUNNEL CLOUD 1 SSE DOROTHY 47.91N 96.44W
07/27/2006 RED LAKE MN AMATEUR RADIO
A PERSISTENT WALL CLOUD WITH DEVELOPING FUNNEL WAS
OBSERVED MOVING TO THE SOUTH-SOUTHEAST. A TOUCHDOWN LATER
OCCURED EAST OF HUOT.
0644 PM HAIL RED LAKE FALLS 47.89N 96.27W
07/27/2006 E1.00 INCH RED LAKE MN CO-OP OBSERVER
0646 PM TORNADO 1 E HUOT 47.87N 96.40W
07/27/2006 F0 RED LAKE MN NWS STORM SURVEY
A TORNADO TOUCHED DOWN INTERMITTENTLY ALONG A 2.5 MILE
TRACK TO THE SOUTH. THE TORNADO CROSSED INTO POLK COUNTY
AFTER TRAVELING A LITTLE OVER ONE MILE. IT EXITED RED
LAKE COUNTY ABOUT 1.5 MILES SOUTHEAST OF HUOT AT ABOUT
650 PM. THE TORNADO SWIRLED SWATHS OF GRAIN AND FLIPPED A
SHED DOOR UP ONTO THE SHED ROOF. IT ALSO BROKE OFF
NUMEROUS LARGE TREE BRANCHES IN SHELTERBELTS ALONG ITS
PATH. PEAK WINDS ARE ESTIMATED AT ABOUT 65 MPH.
0650 PM TORNADO 4 NNE GENTILLY 47.84N 96.42W
07/27/2006 F0 POLK MN NWS STORM SURVEY
THE TORNADO CROSSED FROM RED LAKE COUNTY INTO POLK COUNTY
AND CONTINUED FOR ABOUT 1.5 MILES. THE TORNADO BROKE
NUMEROUS LARGE BRANCHES IN VARIOUS SHELTER BELTS ALONG
ITS ROUTE AND LIFTED ABOUT 2.5 MILES NE OF GENTILLY
AROUND 654 PM. PEAK WINDS ARE ESTIMATED AT 65 MPH.
0654 PM FUNNEL CLOUD 14 NW MENTOR 47.84N 96.36W
07/27/2006 POLK MN TRAINED SPOTTER
0657 PM TORNADO 4 SSW RED LAKE FALLS 47.83N 96.31W
07/27/2006 F0 RED LAKE MN AMATEUR RADIO
A WALL CLOUD AND FUNNEL WAS ORIGINALLY REPORTED AND
TRACKED BY TWO TRAINED SPOTTERS WHOSE VIEW OF THE SURFACE
WAS OBSCURED BY TREES. A STORM SURVEY CONFIRMED AN
INTERMITTENT SURFACE TRACK FOR ABOUT 2.5 MILES WHICH
ENDED ABOUT 6 MILES SOUTH OF RED LAKE FALLS BY ABOUT 708
PM. NUMEROUS LARGE TREE BRANCHES WERE BROKEN OFF IN
SHELTER BELTS ALONG THE ROUTE AND LARGE HAY BALES WERE
TUMBLED. ESTIMATED PEAK WIND SPEEDS WERE ABOUT 70 MILES
AN HOUR.
0709 PM HAIL 3 SE GENTILLY 47.76N 96.40W
07/27/2006 E1.00 INCH POLK MN PUBLIC
0710 PM HAIL 7 SW TERREBONNE 47.76N 96.24W
07/27/2006 M2.50 INCH RED LAKE MN PUBLIC
QUARTER TO TENNIS BALL SIZED HAIL FELL FOR ABOUT 5
MINUTES UNTIL 715 PM. HAIL CROSSED INTO POLK COUNTY.
0711 PM HAIL 6 NW MENTOR 47.76N 96.24W
07/27/2006 M2.50 INCH POLK MN PUBLIC
HAIL FROM QUARTER TO TENNIS BALL SIZED HAIL FELL FOR
ABOUT 5 MINUTES UNTIL 716 PM.
0724 PM HAIL MENTOR 47.70N 96.14W
07/27/2006 E1.00 INCH POLK MN PUBLIC
0729 PM HAIL 3 SW MENTOR 47.67N 96.19W
07/27/2006 M1.75 INCH POLK MN TRAINED SPOTTER
0745 PM HAIL 4 S MENTOR 47.64N 96.14W
07/27/2006 E1.00 INCH POLK MN PUBLIC
0746 PM TSTM WND GST 7 SW ERSKINE 47.59N 96.12W
07/27/2006 E65.00 MPH POLK MN PUBLIC
DAMAGING WINDS AND HAIL TO THE SIZE OF GOLF BALLS HIT
PORTIONS OF UNION LAKE. NUMEROUS LARGE TREE BRANCHES AND
SMALLER TREES WERE WERE SNAPPED OFF. HEAVY LOG BUILT LAWN
FURNITURE AND A SMALL STORAGE SHED WERE BLOWN AROUND.
0747 PM HAIL 5 S ERSKINE 47.59N 96.01W
07/27/2006 M0.75 INCH POLK MN TRAINED SPOTTER
0752 PM HAIL 6 W WINGER 47.54N 96.11W
07/27/2006 E0.88 INCH POLK MN TRAINED SPOTTER
0758 PM HAIL 3 W WINGER 47.54N 96.05W
07/27/2006 M2.00 INCH POLK MN TRAINED SPOTTER
HAIL FROM QUARTER TO HEN EGG SIZED COVERING THE ROAD.
ESTIMIMATED WIND GUSTS TO 45 MILES AN HOUR.
0800 PM HAIL 4 N BEJOU 47.50N 95.97W
07/27/2006 E1.00 INCH MAHNOMEN MN PUBLIC
0800 PM HAIL WINGER 47.54N 95.99W
07/27/2006 E1.75 INCH POLK MN PUBLIC
0802 PM HAIL 3 NE RANUM 47.49N 96.09W
07/27/2006 M0.75 INCH NORMAN MN PUBLIC
MARBLE TO PENNY SIZED HAIL COVERED THE GROUND.
0827 PM HAIL 4 NE MAHNOMEN 47.36N 95.91W
07/27/2006 E0.88 INCH MAHNOMEN MN PUBLIC
&&
GGUSTThe Fargo/Grand Forks radar (KMVX), 175 km away, was scanning. The volume nearest the first event began at 04:13 UTC.
9 thunderstorm wind, 3 hail. Local standard time, as filed.
A 100 foot tall cottonwood tree three feet wide at the base was blown down by downburst wind.
Nickle to quarter sized hail fell.
2 inch diameter tree branches were blown down with reports of power outages.
2 inch diameter tree branches were blown down.
2 inch diameter tree branches were snapped off.
A 6 inch diameter tree was snapped off and 5 smaller trees were blown down. Other tree branches were also snapped off by the strong wind.
Several trees were blown down in town.
2 inch diameter tree branches were blown down.
The wind gust was measured by a MNDOT RWIS sensor along U.S. Highway 10 at mile post 94.
The wind gust was measured at the Staples airport in southeast Wadena county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2006Every state in 2006This day in weather historyWarnings in Minnesota, July 2006
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: 5527515, 5527516, 5527517, 5527518, 5527519, 5527520, 5526362, 5526366, 5526367, 5526363, 5526364, 5526365.