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July 30th Great Lakes Severe Weather


wisconsinwx

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And so it begins.... The line is intensifying and heading this way....

BULLETIN - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI

110 AM EDT TUE JUL 31 2012

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

BAY COUNTY IN SOUTHEAST MICHIGAN...

MIDLAND COUNTY IN SOUTHEAST MICHIGAN...

* UNTIL 215 AM EDT

* AT 104 AM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE

THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING

WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE

EXTENDING FROM BEAVERTON TO OIL CITY...AND MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...

EDENVILLE AROUND 115 AM EDT.

HOPE AND SANFORD AROUND 120 AM EDT.

AVERILL AROUND 125 AM EDT.

BOMBAY AROUND 130 AM EDT.

BENTLEY AND MOUNT FOREST AROUND 135 AM EDT.

WILLARD AND CRUMP AROUND 145 AM EDT.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...

SANFORD... PINCONNING... OIL CITY...

MIDLAND... LINWOOD... KAWKAWLIN...

ESSEXVILLE... EDENVILLE... COLEMAN...

BENTLEY... BAY CITY... AUBURN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF

YOUR HOME OR BUSINESS.

Edit to add... Interesting to note that DTX has not updated their HWO since 3:04PM on Monday. It reads:

304 PM EDT MON JUL 30 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST

MICHIGAN.

.DAY ONE...TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS THIS EVENING AND THROUGH THE

OVERNIGHT AS A WEAK SHORTWAVE TRACKS THROUGH THE AREA. THESE

THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE...BUT WILL BE CAPABLE OF

PRODUCING HEAVY RAIN. STORM MOTION WILL BE SOUTHEAST AT 20 MPH.

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The line is moving into a less favourable environment across northern Illinois (and northern Indiana/lower Michigan for that matter). CAPE values are low, and the atmosphere is fairly capped. However, 850-mb moisture is good; dewpoint depressions are low. I've noticed in the last scan or two that they are starting to weaken slowly, and they seem slated to continue doing so. Nonetheless, dryness present at around 700 mb is always a plus for some good lightning in the meantime.

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The line is moving into a less favourable environment across northern Illinois (and northern Indiana/lower Michigan for that matter). CAPE values are low, and the atmosphere is fairly capped. However, 850-mb moisture is good; dewpoint depressions are low. I've noticed in the last scan or two that they are starting to weaken slowly, and they seem slated to continue doing so. Nonetheless, dryness present at around 700 mb is always a plus for some good lightning in the meantime.

You have to remember thunderstorms go to Milwaukee to die. That's just the way it works. Show me storms that were intense near Madison or Fon du Lac that maintained their intensity and you have a point. Thus, Chicago's best chances for good storms come from ones moving in from the west, not the north or northwest.

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You have to remember thunderstorms go to Milwaukee to die. That's just the way it works. Show me storms that were intense near Madison or Fon du Lac that maintained their intensity and you have a point. Thus, Chicago's best chances for good storms come from ones moving in from the west, not the north or northwest.

:facepalm:

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I was just out on the deck... Moon is now behind heavy haze and you can faintly see a dull flash of lightning in the sky to the north. Nothing like the line that moved through here a few days back, when you could see the sky flashing nonstop for like two hours prior to the line arriving. And I was out on the deck when that line came through and a bolt of lightning hit the ground wire at the back of my property, maybe 70 feet directly in front of me. I felt the shock wave and smelled the ozone. I left the deck rather quickly at that point

:facepalm:

Is that Paul Goodloe finding out he has to cohost with Stephanie Abrahms?

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Yeah, by no means is this a rare thing, but at the same time, there are certain areas it happens more than others.

Yes, it's quite common to see here too. I've seen so many storms literally fall off of radar five miles away it's not even funny. It's like I live under a permanent cap.

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It's really running on nothing right now... Shouldn't last much longer

The atmosphere isn't perfect for organized convection, but I wouldn't say the storms are running on "nothing."

There's still some modest jet inflow and some reasonably steep mid-level lapse rates.

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SPS issued from DTX:

GENESEE-LAPEER-OAKLAND-SHIAWASSEE-

219 AM EDT TUE JUL 31 2012

...SIGNIFICANT WEATHER ADVISORY...

AT 214 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

GUST FRONT SOUTH OF A LINE OF STRONG THUNDERSTORMS EXTENDING FROM 15

MILES NORTHWEST OF NORTH BRANCH TO 12 MILES NORTHWEST OF NEW LOTHROP

TO 21 MILES WEST OF LAINGSBURG...MOVING SOUTHEAST AT 35 MPH.

WIND GUSTS TO NEAR 40 MPH CAN BE EXPECTED WITH THIS LINE AS IT DROPS

SOUTHEAST THROUGH THE AREA. THE THUNDERSTORMS WILL FOLLOW IN BEHIND

THE GUST FRONT...BRINGING FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY

DOWNPOURS AND CONTINUED GUSTY WINDS.

* THUNDERSTORMS WILL BE NEAR...

HENDERSON BY 225 AM EDT...

OWOSSO AND LAINGSBURG BY 230 AM EDT...

OTTER LAKE AND NEW LOTHROP BY 235 AM EDT...

OTISVILLE BY 240 AM EDT...

PERRY AND NORTH BRANCH BY 245 AM EDT...

DURAND AND BANCROFT BY 250 AM EDT...

SWARTZ CREEK AND FLINT BY 255 AM EDT...

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.

So, about a half an hour or so... I'm right between Swartz Creek and Flint.

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And here it comes...

BULLETIN - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI

241 AM EDT TUE JUL 31 2012

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

GENESEE COUNTY IN SOUTHEAST MICHIGAN...

SAGINAW COUNTY IN SOUTHEAST MICHIGAN...

SHIAWASSEE COUNTY IN SOUTHEAST MICHIGAN...

* UNTIL 345 AM EDT

* AT 239 AM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE

THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60

MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES

SOUTHWEST OF BRIDGEPORT TO HENDERSON...AND MOVING SOUTHEAST AT 35

MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...

LAYTON CORNERS AND BURT AROUND 250 AM EDT.

BIRCH RUN AND BENNINGTON AROUND 255 AM EDT.

JUDDVILLE AND CORUNNA AROUND 300 AM EDT.

CLIO AROUND 305 AM EDT.

VERNON AND LENNON AROUND 310 AM EDT.

THETFORD TOWNSHIP AND MOUNT MORRIS AROUND 315 AM EDT.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...

SWARTZ CREEK... ST. CHARLES... SAGINAW...

OWOSSO... OTISVILLE... OAKLEY...

NEW LOTHROP... MOUNT MORRIS... MONTROSE...

MARION SPRINGS... LINDEN... LENNON...

HENDERSON... GRAND BLANC... GOODRICH...

GAINES... FLUSHING... FLINT...

FENTON... DURAND... DAVISON...

CORUNNA... CLIO... CHESANING...

BYRON... BURTON... BRIDGEPORT...

BIRCH RUN... BANCROFT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF

YOUR HOME OR BUSINESS.

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You have to remember thunderstorms go to Milwaukee to die. That's just the way it works. Show me storms that were intense near Madison or Fon du Lac that maintained their intensity and you have a point. Thus, Chicago's best chances for good storms come from ones moving in from the west, not the north or northwest.

I'm getting a pretty nice solid svr-warned storm here and its coming from the North and Northwest :thumbsup: :thumbsup:

Maybe they like to die once they hit MKE and then explode/redevelop once they hit the border?

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That line of storms, despite my prognostication earlier in this thread, did indeed make it into northern Illinois without weakening much. The storms affected my location at around 08z. Lightning was moderate, and rainfall was light to moderate for about ten minutes, dropping 0.09". Stronger storms affected a line along Illinois Hwy. 38 from around DeKalb to LaFox and areas north and south from that line, where there was some hail and strong winds as well as more substantial rainfall.

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That line of storms, despite my prognostication earlier in this thread, did indeed make it into northern Illinois without weakening much. The storms affected my location at around 08z. Lightning was moderate, and rainfall was light to moderate for about ten minutes, dropping 0.09". Stronger storms affected a line along Illinois Hwy. 38 from around DeKalb to LaFox and areas north and south from that line, where there was some hail and strong winds as well as more substantial rainfall.

Yeah, I awoke to some small hail in the middle of the night. Cant give you a rainfall total as my wife knocked the gauge clean off of its post while attempting to move the garden hose.

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