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June 6-9th Severe Weather


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It was looking like CR might get missed, but a nasty storm blew up at the last minute at the tail end of the line. It hailed here for about ten minutes with most of it ~0.50" diameter. There were other larger chunks with at least one 1.25" chunk that bounced up on the deck. I think that stone was about equal to the largest I've ever seen here. I guess I can no longer say we never get hail. There were a couple reports of golfball size just northeast of me in the city.

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Nice couplet with this storm West of Harrison

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE GRAND RAPIDS MI

1045 PM EDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...

CLARE COUNTY IN CENTRAL MICHIGAN...

* UNTIL 1115 PM EDT

* AT 1041 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE

TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS

DANGEROUS STORM WAS LOCATED 5 MILES WEST OF HARRISON...AND MOVING

EAST AT 30 MPH.

* THIS TORNADIC STORM WILL BE NEAR...

HARRISON AROUND 1050 PM EDT...

DODGE LAKE AROUND 1100 PM EDT...

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...

HARRISON... CLARE... FARWELL...

SEBEWA TWP... DODGE LAKE... LONG LAKE HEIGHTS...

FRANKLIN TWP... SHERIDEN TWP... LAKE GEORGE...

LAKE... LEOTA... MEREDITH...

BROWNS CORNER... DOVER...

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE GRAND RAPIDS MI

1045 PM EDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...

CLARE COUNTY IN CENTRAL MICHIGAN...

* UNTIL 1115 PM EDT

post-277-0-16689500-1307587345.png

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The line segment near Mount Carroll looks pretty impressive. Looks like it's going to race east and impact Dekalb eventually, and maybe even Chicago later on. We're about to get outflowed here, so wind damage threat here looks minimal from the stuff moving in from the west.

Decent amount of reports coming out of the line(Jo Daviess Co.)

Not sure why the portion around Freeport isn't warned...greatest wind damage potential is in that area.

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The line segment near Mount Carroll looks pretty impressive. Looks like it's going to race east and impact Dekalb eventually, and maybe even Chicago later on. We're about to get outflowed here, so wind damage threat here looks minimal from the stuff moving in from the west.

It will be interesting to watch the evolution of this line as it moves east. OFB from the WI storms in central Kane Co about on Rt 64 heading south.

How is the lighthing to your north?

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BULLETIN - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

947 PM CDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

NORTHWESTERN LA SALLE COUNTY IN NORTH CENTRAL ILLINOIS...

LEE COUNTY IN NORTH CENTRAL ILLINOIS...

OGLE COUNTY IN NORTH CENTRAL ILLINOIS...

SOUTHERN WINNEBAGO COUNTY IN NORTH CENTRAL ILLINOIS...

* UNTIL 1045 PM CDT

* AT 943 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF DOLLAR SIZE

HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE

LOCATED ALONG A LINE EXTENDING FROM RIDOTT TO 6 MILES SOUTHWEST OF

SHANNON TO 19 MILES WEST OF COLETA...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...

MOUNT MORRIS...ROCKFORD AIRPORT...OREGON...DIXON...WALTON...

ROCHELLE...FORRESTON...POLO...BYRON...STILLMAN VALLEY...AMBOY...

FRANKLIN GROVE...ASHTON...HILLCREST...PAW PAW...ADELINE...LEAF

RIVER...NELSON...HARMON AND NEW MILLFORD.

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It will be interesting to watch the evolution of this line as it moves east. OFB from the WI storms in central Kane Co about on Rt 64 heading south.

How is the lighthing to your north?

Not too bad. There's a lot of lower clouds overhead now that's blocking quite a bit of it I think. Getting quite a few flashes, but they're pretty faint due to the thick lower clouds.

Outflow just blew through here. Temp only dropped from 84 to 83, but my dewpoint dropped from 70 to 64.

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Came in with some nice gust approaching 60, sick lightning but no hail go figure. Power went out immediately for about 10 mins. The good stuff lasted about 15 seconds and then it was just an ordinary garden variety t-storm. Good thing the line crapped the bed as 60mph gust are about all this area can handle me thinks before the **** really hits the fan.

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interesting to watch the obs. as the line of storms that runs east/west across michigan moves east, the showers at the leading edge are drying up and causing mini heat bursts with temps jumping 3-6 degrees and dps dropping 5-10 degrees only to rebound within a half hour.

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I'm not sure if the Michigan portion of the line will be able to maintain its severity all the way over to my neck of the woods, as shear is pretty week and the HRRR shows CAPE on the wane as the night goes on. Still though, I'd expect to at least get some lightning/thunder later tonight, which will be nice after eight days of no precipitation.

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Wondered why my satellite kept cutting out. Checked the echo tops and there's a 40kt tall cell blowing up right overhead. Not even raining here though.

The overall trend in eastern Iowa is for the storms to weaken. Looks like things are progressing more towards heavy rain threat from here on out for areas to the west here.

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I'm not sure if the Michigan portion of the line will be able to maintain its severity all the way over to my neck of the woods, as shear is pretty week and the HRRR shows CAPE on the wane as the night goes on. Still though, I'd expect to at least get some lightning/thunder later tonight, which will be nice after eight days of no precipitation.

Yeah I am concerned over the shear aspect although the 0-1km shear is not bad atm, and the instability hasn't waned too much yet.

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BULLETIN - EAS ACTIVATION REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE GRAND RAPIDS MI

1130 PM EDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

ALLEGAN COUNTY IN SOUTHWEST MICHIGAN...

* UNTIL 100 AM EDT

* AT 1126 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE

TRACKING A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING

DESTRUCTIVE WINDS IN EXCESS OF 75 MPH. THESE STORMS WERE LOCATED

ALONG A LINE EXTENDING FROM 15 MILES NORTHWEST OF SAUGATUCK TO 20

MILES WEST OF SOUTH HAVEN..AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...

SAUGATUCK... ALLEGAN... FENNVILLE...

PLAINWELL... WAYLAND... GANGES...

MOLINE... PULLMAN... CASTLE PARK...

SAUGATUCK STATE PARK... GRAAFSCHAP...

HOLLAND TULIP ARPT... BURNIPS... BRADLEY...

DOUGLAS... SHELBYVILLE... MARTIN...

OTSEGO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER NOW. THIS IS AN EXTREMELY DANGEROUS SITUATION WITH

TORNADO LIKE WINDS AND SIGNIFICANT DAMAGE EXPECTED. MOBILE HOMES AND

HIGH PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS

MAGNITUDE AND MAY BE OVERTURNED. TAKE COVER NOW...MOVE TO AN INTERIOR

ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

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Although most of the areas getting hard hit with rain this week can take a few inches of rain at least, I would think flooding might be an issue by the end of the week. Many areas in the Western Great Lakes are probably getting 1-4 inches tonight, with another 1-2 possible on Friday.

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TAKE SHELTER NOW. THIS IS AN EXTREMELY DANGEROUS SITUATION WITH

TORNADO LIKE WINDS AND SIGNIFICANT DAMAGE EXPECTED. MOBILE HOMES AND

HIGH PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS

MAGNITUDE AND MAY BE OVERTURNED. TAKE COVER NOW...MOVE TO AN INTERIOR

ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

Interesting...the portion of the line heading for Allegan County looks pretty disorganized IMO.

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