Very unstable conditions existed in advance of an approaching cold front during the afternoon of June 27, 2010. Thunderstorms developed over southern Lake Michigan and moved northeast into Van Buren and Kalamazoo 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 GRR wrote it up.
Very unstable conditions existed in advance of an approaching cold front during the afternoon of June 27, 2010. Thunderstorms developed over southern Lake Michigan and moved northeast into Van Buren and Kalamazoo Counties. A brief tornado touched down just south of Gobles in Van Buren County just after 1:00 PM EDT.
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 Rapids, MI wrote its last area forecast discussion before the first event at Jun 27, 9:08 AM EST, 2 hours 42 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1008 AM EDT SUN JUN 27 2010 LATEST UPDATE...SHORT TERM... .SYNOPSIS...(300 AM EDT SUN JUN 27 2010) A COLD FRONT WILL TRACK SOUTHEAST THROUGH LOWER MICHIGAN TODAY BRINGING SOME SHOWERS AND THUNDERSTORMS... SOME OF WHICH MAY BE STRONG TO SEVERE. DRY WEATHER IS ANTICIPATED FOR THE UPCOMING WEEK ALONG WITH THE ARRIVAL OF A VERY COOL AIRMASS FROM MONDAY NIGHT THROUGH MIDWEEK. && .SHORT TERM...(1008 AM EDT SUN JUN 27 2010) (THSI AFTERNOON THROUGH TUESDAY AFTERNOON) THE FIRST ROUND OF STORMS IS MOVING EAST ACROSS THE CENTRAL CWA. THE SRN CWA DIDN/T SEE MUCH OUT OF THAT LINE. AS SUCH...THE ATM REMAINS SOMEWHAT UNSTABLE THERE. LATEST VIS IMAGERY SHOWS SOME CLEARING OVER SRN LWR WHICH WILL RESULT IN MORE DESTABILIZATION. MESOANALYSIS SHOWS 2500 J/KG MIXED LAYER CAPE MOVING OVER SRN LAKE MI. THIS WILL MOVE ACROSS THE SRN CWA THIS AFTERNOON. A DEVELOPING LINE OF TSRA OVER NRN IL WILL TAP INTO THAT JUICE THIS AFTERNOON AS IT MOVES EAST. I BELIEVE IT/S REASONABLE TO SUGGEST THAT THESE STORMS MAY INTENSIFY THIS AFTERNOON ACROSS THE SRN CWA. UPDATED THE GRIDS TO REFLECT HIGHER POPS AND GUSTY WINDS OVER THE SRN CWA. MORE STORMS WILL FIRE ALONG THE COLD FRONT CURRENTLY STRETCHING FROM SW IOWA TO A LOW IN CENTRAL WISCONSIN AS IT MOVES EAST. THUS WE MAY BE IN FOR A PROLONGED PERIOD OF CONVECTION THIS AFTERNOON/EVENING. A MUCH DRIER AND COOLER AIRMASS WILL ADVECT IN EARLY THIS WEEK. IN FACT BY MONDAY NIGHT LOW TEMPS WILL DIP INTO THE UPPER 40S TO LOWER 50S WITH TEMPS ONLY RECOVERING INTO THE LOWER 70S TUESDAY IN A NW FLOW CAA REGIME. && .LONG TERM...(300 AM EDT SUN JUN 27 2010) (TUESDAY NIGHT THROUGH SATURDAY) MY CONFIDENCE CONTINUES TO INCREASE ON THE COOL AND INACTIVE PERIOD OF WEATHER THIS COMING WEEK OVER ALL OF SOUTHWEST LOWER MICHIGAN. THE DEVELOPING OMEGA BLOCK ACROSS CANADA... THAT WILL SLOWLY MOVE EAST OVER TIME... WILL DO WHAT OMEGA BLOCKS TYPICALLY DO... KEEP THE OVERALL WEATHER PATTERN THE SAME FOR AN EXTENDED PERIOD OF TIME. IN THIS CASE...BEING BETWEEN THE UPSTREAM RIDGE AND DOWN STREAM TROUGH WILL MEAN PLENTY OF COOL DRY CANADIAN AIR FOR MOST OF THIS COMING WEEK. BY LATE IN THE WEEK THE SURFACE HIGH GETS EAST OF LOWER MICHIGAN AND UPSTREAM RIDGE AXIS WILL BE NEARLY OVERHEAD. AT THAT POINT A SLOW WARM UP WILL BEGIN. HIGHS WILL MOSTLY BE IN THE 70S INTO THURSDAY... BUT THE WARM TO THE 80S BY THE END OF THE WEEK. && .AVIATION...(738 AM EDT SUN JUN 27 2010) DEVELOPING SURFACE LOW WILL FOCUS LOW LEVEL INFLOW ON SOUTHWEST LOWER MICHIGAN TODAY. WE SHOULD SEE PERIODS OF THUNDERSTORMS. FIRST THIS MORNING WITH THE WARM FRONT THAN THIS AFTERNOON WITH THE COLD FRONT. THE LOW LEVEL JET STRENGTHS AND IS FOCUSED ON I-94 BY 21Z. I DO BELIEVE THERE WILL BE THUNDERSTORMS. CLEARING WILL BE SLOW... IS EXPECTED LATER TONIGHT. && .MARINE...(300 AM EDT SUN JUN 27 2010) FAIRLY MINIMAL WAVE ACTION IS ANTICIPATED TODAY BUT THUNDERSTORMS WILL POSE A HAZARD TO MARINERS AND ALSO BRIEFLY BUILD WAVE HEIGHTS. WAVE HEIGHTS WILL INCREASE SOMEWHAT WITH THE COOL AIR ADVECTION MONDAY AND TUESDAY. && .HYDROLOGY...(300 AM EDT SUN JUN 27 2010) LOCALLY HEAVY RAIN IS POSSIBLE THIS AFTN AND EARLY EVE WITH THE STRONGER STORMS WITH PRECIPTABLE WATER VALUES UP AROUND 2 INCHES. HOWEVER WIDESPREAD HEAVY RAIN IS CERTAINLY NOT ANTICIPATED TODAY. A DRY WX PATTERN WILL DEVELOP FOR MOST IF NOT ALL OF THE UPCOMING WEEK. && .GRR WATCHES/WARNINGS/ADVISORIES... MI....NONE. LM....NONE. && SYNOPSIS: LAURENS SHORT TERM: 93 LONG TERM: WDM AVIATION: WDM MARINE: LAURENS HYDROLOGY: LAURENS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1205 PM EDT SUN JUN 27 2010 MIZ037>040-043>046-050>052-056>059-064>067-071>074-280930- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 1205 PM EDT SUN JUN 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS SOUTHWEST LOWER MI TODAY. THE HIGHEST CHANCE IS SOUTH OF I-96 WHERE WINDS IN EXCESS OF 60 MPH WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED THIS AFTERNOON. LMZ844>849-280930- ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI- HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI- WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI- 1205 PM EDT SUN JUN 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS SOUTHWEST LOWER MI TODAY. THE HIGHEST CHANCE IS SOUTH OF SAINT JOSEPH WHERE WINDS IN EXCESS OF 60 KNOTS WILL BE POSSIBLE. SOUTH WINDS OF 15 TO 25 KNOTS MAY BUILD WAVES TO 4 FEET NORTH OF GRAND HAVEN INTO EARLY THIS AFTERNOON. THIS WILL INCREASE THE RISK OF RIP CURRENTS TOO. CONDITIONS WILL IMPROVE BY EVENING AS WINDS SHIFT TO THE WEST AND DIMINISH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED THIS AFTERNOON. WDM 93
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
751 AM EDT SUN JUN 27 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0744 AM TSTM WND GST 5 W HOLLAND 42.78N 86.21W
06/27/2010 M43 MPH OTTAWA MI PUBLIC
SPYGLASS CONDOS HAD A PEAK WIND GUST TO 43 MPH AT 744 AM.
&&
BMARINOSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
816 AM EDT SUN JUN 27 2010
MIZ045-046-051-052-056>059-064>066-271315-
ALLEGAN-BARRY-CLINTON-EATON-GRATIOT-IONIA-ISABELLA-KENT-MECOSTA-
MONTCALM-OTTAWA-
816 AM EDT SUN JUN 27 2010
...SIGNIFICANT WEATHER ADVISORY...
AT 811 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 18 MILES NORTH OF
GREENVILLE TO 25 MILES NORTHWEST OF HASTINGS TO 9 MILES WEST OF
ALLEGAN...MOVING EAST AT 30 MPH.
FUNNEL CLOUDS...PEA SIZE HAIL...WINDS GREATER THAN 30 MPH...FREQUENT
CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
EDMORE... GREENVILLE... DUTTON...
CASCADE... DORR... ALLEGAN...
MCBRIDE... MOLINE... SIDNEY...
CEDAR LAKE... STANTON... FALLASSBURG...
SMYRNA... BELDING... HOPKINS...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.
&&
LAT...LON 4300 8465 4245 8511 4250 8618 4289 8571
4349 8518 4356 8461 4347 8460 4347 8437
4345 8436
TIME...MOT...LOC 1216Z 260DEG 27KT 4343 8512 4291 8558
4258 8597
WDMSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
858 AM EDT SUN JUN 27 2010
MIZ051-052-058-059-066-067-271400-
CLINTON-EATON-GRATIOT-INGHAM-IONIA-MONTCALM-
858 AM EDT SUN JUN 27 2010
...SIGNIFICANT WEATHER ADVISORY...
AT 856 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES SOUTH OF
ALMA TO 12 MILES WEST OF ST. JOHNS TO 11 MILES SOUTHWEST OF ST. JOHNS
TO 14 MILES NORTHWEST OF LANSING TO 28 MILES WEST OF LANSING...MOVING
EAST AT 50 MPH.
FUNNEL CLOUDS...WINDS GREATER THAN 30 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
NORTH STAR... BRIDGEVILLE... BRECKENRIDGE...
LAFAYETTE TWP... WHEELER... ASHLEY...
GRAND LEDGE... EUREKA... DEWITT...
ST. JOHNS... BANNISTER... WAVERLY...
POTTERVILLE... BATH... LANSING...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.
&&
LAT...LON 4260 8414 4261 8508 4283 8489 4292 8484
4301 8491 4345 8470 4346 8437 4278 8436
4278 8415
TIME...MOT...LOC 1258Z 273DEG 44KT 4323 8465 4301 8477
4291 8471 4282 8475 4271 8506
WDMSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1250 PM EDT SUN JUN 27 2010 MIZ066-067-073-074-271730- CALHOUN-EATON-INGHAM-JACKSON- 1250 PM EDT SUN JUN 27 2010 ...SIGNIFICANT WEATHER ADVISORY... AT 1247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 20 MILES SOUTH OF CHARLOTTE...MOVING NORTH AT 20 MPH. PENNY SIZE HAIL...WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THIS AREA...AND IT IS POSSIBLE THIS STORM WILL REQUIRE A SEVERE THUNDERSTORM WARNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY EVENING FOR SOUTHWESTERN MICHIGAN. && LAT...LON 4258 8498 4256 8453 4222 8477 4225 8499 TIME...MOT...LOC 1649Z 198DEG 19KT 4229 8491 TJT
The Grand Rapids radar (KGRR), 78 km away, was scanning. The volume nearest the first event began at 16:51 UTC.
4 thunderstorm wind, 1 tornado. Local standard time, as filed.
State police reported that a couple of trees were blown down one mile north of Bangor.
A trained spotter reported two trees were blown down two miles north northwest of Marengo.
The tornado touched down briefly just south of 20th Avenue causing damage to one property. A metal outbuilding lost its tin roof. Numerous snapped branches were found at treetop level. No damage to the residence was evident. The tornado then skipped across an open area with little to no damage. The tornado then touched down in a cornfield with evidence in the broken cornstalks. The path then moved into a line of trees. Approximately 20 trees were uprooted or snapped. A new camping trailer was flipped into a house. The tornado then lifted in the backyard of the residence.
The broadcast media reported numerous trees were damaged and that there were power outages in Parchment as a result of wind gusts up to 65 mph.
Allegan county officials reported that a couple of trees were blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2010Every state in 2010This day in weather historyThe tornado archive for Michigan, 2010Warnings in Michigan, June 2010
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: 235776, 235780, 227680, 235784, 235786.