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July 5th and beyond Severe Weather thread


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1025 AM TSTM WND GST 2 ESE ARGOS 41.69N 86.20W

07/11/2011 E75 MPH ST. JOSEPH IN TRAINED SPOTTER

0955 AM TSTM WND GST 2 NNW MICHIGAN CITY 41.74N 86.91W

07/11/2011 M85 MPH LMZ046 IN C-MAN STATION

0955 AM TSTM WND DMG MICHIGAN CITY 41.71N 86.90W

07/11/2011 LAPORTE IN TRAINED SPOTTER

REPORTS OF TREES AND POWERLINES DOWN IN MICHIGAN

CITY...TIME ESTIMATED FROM RADAR.

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Disagree.

hope your right. Todays derecho line looks similar as far as time of day and size to one a few years ago that hit the central counties. Came on a day where severe weather wasn't expected and the line was racing east about 70-80 MPH. Can't find a link on it for SE MI and it occured I believe in 2008. Think it hit chicago before becomming more intense.

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Didn't evaporate like you suggested, so just fine. Still a line of storms moving through.

Nope, nowhere in my post did I say anything about evaporating, I said weaken, which it did and is still doing.

Depends.

The instability/moisture axis is still off to the west (Northern Illinois into Indiana and SE), and the WRF-NMM weakens the storms as they cross Michigan (just a few rain showers and some debris). I'm thinking they're going to evolve similar to what the WRF-NMM shows, but I could be wrong (though there's nothing to suggest otherwise).

We would need some rapid destabilization/moisture advection to take place this way in order for them to hold, but it's pretty much a race for time with the speed these storms are moving.

Either way, the storms probably won't weaken fast enough to not disrupt any chance for development later.

Actually the way the line is evolving isn't too dissimilar from what the 00z WRF-NMM showed. Its biggest vice is that it was too slow.

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hope your right. Todays derecho line looks similar as far as time of day and size to one a few years ago that hit the central counties. Came on a day where severe weather wasn't expected and the line was racing east about 70-80 MPH. Can't find a link on it for SE MI and it occured I believe in 2008. Think it hit chicago before becomming more intense.

Completely different setup.

If you're talking about that event in April 2008, for starters we had full sunshine ahead of it (no MCS or debris ahead of it) and a very intense MCV to hold the line together.

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Nope, nowhere in my post did I say anything about evaporating, I said weaken, which it did and is still doing.

Actually the way the line is evolving isn't too dissimilar from what the 00z WRF-NMM showed. Its biggest vice is that it was too slow.

Why don't we wait until both lines are through before we go through this.

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE NORTHERN INDIANA

1047 AM EDT MON JUL 11 2011

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* TORNADO WARNING FOR...

WESTERN BRANCH COUNTY IN SOUTHWEST MICHIGAN...

ST. JOSEPH COUNTY IN SOUTHWEST MICHIGAN...

* UNTIL 1130 AM EDT

* AT 1043 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED

TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE.

ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF SCHOOLCRAFT TO 6

MILES NORTHWEST OF CONSTANTINE TO 4 MILES NORTHEAST OF BRISTOL...

AND MOVING EAST AT 50 MPH.

* LOCATIONS IN THE PATH OF THESE SEVERE STORMS INCLUDE...

CENTREVILLE...

STURGIS...

COLON...

UNION CITY AND BRONSON...

Side note, I wouldn't be shocked if K-zoo County gets a Tornado warning soon, nice rotation forming in the line there.

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...SEICHE WARNING FOR THE ILLINOIS SHORE OF LAKE MICHIGAN UNTIL

100 PM CDT...

.A STRONG LINE OF STORMS MOVING ACROSS THE LAKE THIS MORNING

LIKELY WILL CAUSE WATER TO PILE UP ALONG THE MICHIGAN AND INDIANA

SHORES AND BE REFLECTED BACK TOWARD THE ILLINOIS SHORELINE. THIS

PHENOMENA IS KNOWN AS A SEICHE.

ILZ006-014-111800-

/O.NEW.KLOT.LS.W.0002.110711T1431Z-110711T1800Z/

LAKE IL-COOK-

931 AM CDT MON JUL 11 2011

...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 1 PM CDT THIS

AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A LAKESHORE

FLOOD WARNING...WHICH IS IN EFFECT UNTIL 1 PM CDT THIS

AFTERNOON...IN ANTICIPATION OF A POSSIBLE SEICHE.

* LAKE SHORE FLOODING...ALONG THE ILLINOIS SHORELINE OF LAKE MICHIGAN.

* TIMING...THROUGH THE MORNING INTO THE EARLY AFTERNOON.

* IMPACTS...WATER LEVELS ARE EXPECTED TO RISE AND FALL...PERHAPS

BY 2 OR MORE FEET...DURING THE PERIOD OF THE WARNING.

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Made out ok here in Dunlap on the se side of Elkhart. I'm terrible at estimating wind speed, but it seems as though the higher winds were nw of us. Did not lose power locally and only small branches down around the office here. Scattered power outages throughout the Michiana area.

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...SEICHE WARNING FOR THE ILLINOIS SHORE OF LAKE MICHIGAN UNTIL

100 PM CDT...

.A STRONG LINE OF STORMS MOVING ACROSS THE LAKE THIS MORNING

LIKELY WILL CAUSE WATER TO PILE UP ALONG THE MICHIGAN AND INDIANA

SHORES AND BE REFLECTED BACK TOWARD THE ILLINOIS SHORELINE. THIS

PHENOMENA IS KNOWN AS A SEICHE.

ILZ006-014-111800-

/O.NEW.KLOT.LS.W.0002.110711T1431Z-110711T1800Z/

LAKE IL-COOK-

931 AM CDT MON JUL 11 2011

...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 1 PM CDT THIS

AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A LAKESHORE

FLOOD WARNING...WHICH IS IN EFFECT UNTIL 1 PM CDT THIS

AFTERNOON...IN ANTICIPATION OF A POSSIBLE SEICHE.

* LAKE SHORE FLOODING...ALONG THE ILLINOIS SHORELINE OF LAKE MICHIGAN.

* TIMING...THROUGH THE MORNING INTO THE EARLY AFTERNOON.

* IMPACTS...WATER LEVELS ARE EXPECTED TO RISE AND FALL...PERHAPS

BY 2 OR MORE FEET...DURING THE PERIOD OF THE WARNING.

Good call by Alek.

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1030 AM TSTM WND DMG N HOLLAND 42.79N 86.11W

07/11/2011 OTTAWA MI 911 CALL CENTER

NUMEROUS TREES AND POWER LINES DOWN. MANY TREES DOWN ON

HOUSES.

1125 AM TSTM WND DMG E CUTLERVILLE 42.84N 85.65W

07/11/2011 KENT MI COUNTY OFFICIAL

*** 1 FATAL *** TREE FELL ON HOUSE. ONE CONFIRMED

FATALITY.

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