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July 5-8 Severe/Heavy Rain Possibilities


Hoosier

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For days it was looking like tonight we would have a raging MCS rolling through the corn belt with widespread high-end severe potential.  Figured the morning garbage could put a dent in the main setup, but never thought it would totally destroy it completely.  What a wussy little setup this turned out to be.  Could end up being good news for the MI/IN/OH peeps, since a raging MCS tonight main have screwed up tomorrow's setup out east.  

 

Yeah, skies look to be fairly clear out to the west and the current activity should be out of here by sunrinse. 

 

Mid-level lapse rates also look to be half-way decent for once, so if activity is able to break through the cap and organize, we could finally see severe action. 

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For days it was looking like tonight we would have a raging MCS rolling through the corn belt with widespread high-end severe potential. Figured the morning garbage could put a dent in the main setup, but never thought it would totally destroy it completely. What a wussy little setup this turned out to be. Could end up being good news for the MI/IN/OH peeps, since a raging MCS tonight main have screwed up tomorrow's setup out east.

Yep, IWX did say if no real widespread convection tonight tomorrow could be interesting, and lo and behold no MCS tonight.

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Jesus, might need flash flood warning for this

 

KDET 080553Z 04005KT 3/4SM +RA BR BKN006 OVC010 21/19 A2988 RMK AO2 SLP112 P0224 60231 T02060194 10289 20206 53016

 

Heaviest it's been all night.

 

I'm tempted to call into DTX to ask them what's going on, but trying to give them the benefit of the doubt.

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New Day 1, still a slight but they might go Enhanced in time

..CNTRL GREAT LAKES/OH VALLEY EWD INTO THE MID-ATLANTIC STATES

SOMEWHAT COMPLEX FORECAST THIS PERIOD IS LARGELY RELATED TO

UNCERTAINTY IN CONVECTIVE CLUSTER LOCATIONS AND POCKETS OF

CONVECTIVELY OVERTURNED AIR WHICH MAY LEND TO LIMIT DESTABILIZATION

IN AREAS. NONETHELESS...A RESERVOIR OF RELATIVELY RICH LOW-LEVEL

MOISTURE OVER THE OH VALLEY IS FORECAST SLOWLY ADVECT NEWD INTO

PARTS OF LOWER MICH IN WAKE OF A TSTM CLUSTER EARLY THIS MORNING.

MODELS SHOW SURFACE DEWPOINTS RANGING FROM THE MID 60S OVER NRN

LOWER MICH TO THE LOWER 70S OVER THE OH VALLEY AHEAD OF A COLD FRONT

FORECAST TO BE LOCATED FROM CNTRL LOWER MICH SWWD INTO W-CNTRL

INDIANA BY EARLY AFTERNOON. AFOREMENTIONED DISTURBANCE AND

ASSOCIATED ASCENT WILL COMBINE WITH HEATING TO YIELD SCTD STORMS

DEVELOPING OVER LOWER MICH WITH ISOLD STORM COVERAGE POSSIBLE

FARTHER SW IN THE LOWER OH VALLEY. HAIL/WIND WILL BE THE PRIMARY

THREATS WITH THE STRONGER STORMS /INCLUDING THE POSSIBILITY FOR

SUPERCELLS/. A LOW PROBABILITY FOR A TORNADO MAY BE GREATEST NEAR

AND N OF WHERE AN OUTFLOW BOUNDARY BECOMES LOCATED OVER THE SRN

GREAT LAKES. CLUSTERS OF STRONG TO SEVERE STORMS CAPABLE MAINLY OF

A WIND-DAMAGE RISK MAY DEVELOP ACROSS THE OH VALLEY BUT CONSIDERABLE

UNCERTAINTY PRECLUDES HIGHER WIND PROBABILITIES AT THIS TIME. ISOLD

STORMS ARE ALSO POSSIBLE ACROSS THE CNTRL APPALACHIANS WITH A RISK

FOR ISOLD DAMAGING WINDS GIVEN THE APPRECIABLY STRONG WIND FIELDS

THAT WOULD ACT TO ORGANIZE MULTICELLS. A DECREASE IN STORM

COVERAGE/INTENSITY IS EXPECTED BY EARLY EVENING AS BOUNDARY-LAYER

STABILIZATION OCCURS.

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For those of us further west who are now out of the action, it's looking like our next decent shot for severe arrives Tue, and especially Wed next week.  Both GFS and Euro show nice mid-upper level energy streaking through Wed-Wed night above a large area of potential strong instability.  Long way to go, but that's about all that's worth looking at, at this point.  

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That is crazy. I'm going to assume I-94 on the east side has to be under water considering how easy that trench floods.

It looks like we should get a little more rain here to the southwest, which is better than nothing. Beggars cant be choosers.

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New Day 1, still a slight but they might go Enhanced in time

..CNTRL GREAT LAKES/OH VALLEY EWD INTO THE MID-ATLANTIC STATES

SOMEWHAT COMPLEX FORECAST THIS PERIOD IS LARGELY RELATED TO

UNCERTAINTY IN CONVECTIVE CLUSTER LOCATIONS AND POCKETS OF

CONVECTIVELY OVERTURNED AIR WHICH MAY LEND TO LIMIT DESTABILIZATION

IN AREAS. NONETHELESS...A RESERVOIR OF RELATIVELY RICH LOW-LEVEL

MOISTURE OVER THE OH VALLEY IS FORECAST SLOWLY ADVECT NEWD INTO

PARTS OF LOWER MICH IN WAKE OF A TSTM CLUSTER EARLY THIS MORNING.

MODELS SHOW SURFACE DEWPOINTS RANGING FROM THE MID 60S OVER NRN

LOWER MICH TO THE LOWER 70S OVER THE OH VALLEY AHEAD OF A COLD FRONT

FORECAST TO BE LOCATED FROM CNTRL LOWER MICH SWWD INTO W-CNTRL

INDIANA BY EARLY AFTERNOON. AFOREMENTIONED DISTURBANCE AND

ASSOCIATED ASCENT WILL COMBINE WITH HEATING TO YIELD SCTD STORMS

DEVELOPING OVER LOWER MICH WITH ISOLD STORM COVERAGE POSSIBLE

FARTHER SW IN THE LOWER OH VALLEY. HAIL/WIND WILL BE THE PRIMARY

THREATS WITH THE STRONGER STORMS /INCLUDING THE POSSIBILITY FOR

SUPERCELLS/. A LOW PROBABILITY FOR A TORNADO MAY BE GREATEST NEAR

AND N OF WHERE AN OUTFLOW BOUNDARY BECOMES LOCATED OVER THE SRN

GREAT LAKES. CLUSTERS OF STRONG TO SEVERE STORMS CAPABLE MAINLY OF

A WIND-DAMAGE RISK MAY DEVELOP ACROSS THE OH VALLEY BUT CONSIDERABLE

UNCERTAINTY PRECLUDES HIGHER WIND PROBABILITIES AT THIS TIME. ISOLD

STORMS ARE ALSO POSSIBLE ACROSS THE CNTRL APPALACHIANS WITH A RISK

FOR ISOLD DAMAGING WINDS GIVEN THE APPRECIABLY STRONG WIND FIELDS

THAT WOULD ACT TO ORGANIZE MULTICELLS. A DECREASE IN STORM

COVERAGE/INTENSITY IS EXPECTED BY EARLY EVENING AS BOUNDARY-LAYER

STABILIZATION OCCURS.

post-4544-0-18715000-1467958172_thumb.gi

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That is crazy. I'm going to assume I-94 on the east side has to be under water considering how easy that trench floods.

It looks like we should get a little more rain here to the southwest, which is better than nothing. Beggars cant be choosers.

 

We do have one more shot at action tomorrow.

 

But after that, it's back into the dry / sunny pattern.

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Wow, 0.00" here pavement wasn't even fully damp. Like a half mile to my north got 1.5 inches and south got crushed. Epic screw hole over MBY. Oh well, had a nice show.

It was feast or famine today for sure. I'm sitting at maybe a tenth of an inch generously, while 20 miles away nearly 3" fell.

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3"+ of rain here in 2 hours is pretty impressive. And it's crazy to think many of the SW suburbs only saw enough to dampen the ground and leave small puddles. 

 

Of course, GRR placed one of their counties under a Flood Warning for the same amount of rain in the same time frame. 

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And it begins...

 

SEVERE THUNDERSTORM WARNING
MIC133-081445-
/O.NEW.KGRR.SV.W.0016.160708T1344Z-160708T1445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
944 AM EDT FRI JUL 8 2016

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
OSCEOLA COUNTY IN CENTRAL MICHIGAN...

* UNTIL 1045 AM EDT

* AT 943 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER LUTHER...
MOVING EAST AT 35 MPH.

HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT
WIND DAMAGE TO ROOFS...SIDING AND TREES.

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
MARION AROUND 1030 AM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE GIBOS
CORNERS...TUSTIN...DIGHTON...HERSEY...HIGHLAND...PARK
LAKE...INA...LE ROY... PISGAH HEIGHTS AND ASHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4416 8509 4382 8509 4382 8556 4417 8556
TIME...MOT...LOC 1343Z 265DEG 30KT 4403 8567

HAIL...1.75IN
WIND...60MPH

$

TJT

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mcd1204.gif

 

MESOSCALE DISCUSSION 1204
NWS STORM PREDICTION CENTER NORMAN OK
0919 AM CDT FRI JUL 08 2016

AREAS AFFECTED...NORTHERN LOWER MICHIGAN

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 081419Z - 081615Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...DAMAGING WINDS AND SMALL HAIL WILL BE POSSIBLE WITH
THUNDERSTORMS THIS MORNING INTO THE AFTERNOON. A WATCH MAY BE NEEDED
WITHIN THE NEXT FEW HOURS...BUT TIMING IS UNCERTAIN.

DISCUSSION...THUNDERSTORMS WERE DEVELOPING ALONG AND JUST AHEAD OF A
COLD FRONT STRETCHING FROM THE CENTRAL UPPER PENINSULA SOUTHWARD
THROUGH LAKE MICHIGAN INTO CENTRAL IL. THESE STORMS WILL MAINLY
AFFECT PORTIONS OF NORTHERN LOWER MI THROUGH MIDDAY. WITH CONTINUED
HEATING...INCREASING DESTABILIZATION IS EXPECTED AND WITH DEWPOINTS
IN THE MID 60S TO NEAR 70...MLCAPE VALUES NEAR 1500-2000 J/KG ARE
POSSIBLE WITHIN THE NEXT COUPLE OF HOURS. DEEP LAYER SHEAR IS
MARGINALLY FAVORABLE FOR SUPERCELLS AND A MIX OF MULTICELL CLUSTERS
AND MARGINAL SUPERCELLS ARE POSSIBLE. THE MAIN THREAT APPEARS TO BE
DAMAGING WINDS DUE IN PART TO WATER LOADING AFFECTS WITH PW VALUES
NOTED IN THE 1.25-1.5 INCH RANGE. AS TEMPERATURES WARM INTO THE LOW
80S...LOW LEVEL LAPSE RATES WILL ALSO INCREASE...FURTHER SUPPORTING
DOWNBURST POTENTIAL. STORMS MAY REMAIN FAIRLY ISOLATED THIS MORNING
BEFORE BECOMING MORE WIDESPREAD WITH THE APPROACH OF THE UPPER
SHORTWAVE IMPULSE AND EASTWARD SURGE OF THE COLD FRONT. WHILE A
WATCH MAY BE NEEDED AT SOME POINT IN THE NEXT FEW HOURS...TIMING IS
UNCERTAIN AND CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED.

..LEITMAN/THOMPSON.. 07/08/2016


ATTN...WFO...DTX...APX...GRR...

LAT...LON 45798448 45668404 45358335 44958316 44538318 44178335
43658391 43378477 43388614 43668655 44218655 44638650
44948632 45458586 45708563 45808483 45798448 

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mcd1203.gif

 

MESOSCALE DISCUSSION 1203
NWS STORM PREDICTION CENTER NORMAN OK
0908 AM CDT FRI JUL 08 2016

AREAS AFFECTED...SRN IND...NRN KY...SWRN OH

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 081408Z - 081515Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...STRONG THUNDERSTORM CLUSTERS WITH GUSTY WINDS AND SMALL
HAIL WILL SPREAD TOWARD THE IND/OH/KY BORDER REGION OVER THE NEXT
FEW HOURS.

DISCUSSION...REMNANTS OF THURSDAY NIGHT MCS THAT DEVELOPED OVER ERN
KS/WRN MO HAVE SPREAD INTO SERN IL/SRN IND/NWRN KY. LONGER
REFLECTIVITY LOOPS SUGGEST A WEAK MCV IS LOCATED NW OF EVV AND THIS
MAY BE PARTLY RESPONSIBLE FOR UPWARD EVOLUTION OF CONVECTION
IMMEDIATELY DOWNSTREAM. WHILE BOUNDARY-LAYER AIR MASS HAS YET TO
DESTABILIZE APPRECIABLY ALONG THE OH RIVER CORRIDOR...BACKGROUND
SUPPORT FOR STRONG CONVECTION APPEARS TO BE IN PLACE. SMALL
THUNDERSTORM CLUSTERS ARE LIKELY TO CONTINUE AS THEY PROPAGATE
TOWARD THE IND/OH/KY BORDER REGION.

WILL CONTINUE TO MONITOR FOR POSSIBLE WW.

..DARROW/THOMPSON.. 07/08/2016


ATTN...WFO...ILN...LMK...IND...PAH...

LAT...LON 39118670 39508467 38588403 37858550 38168682 39118670

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Hope there arent many at the dunes today

 

* SEVERE THUNDERSTORM WARNING FOR...
  LEELANAU COUNTY IN NORTHERN MICHIGAN...

* UNTIL 1145 AM EDT

* AT 1033 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED 13 MILES WEST OF
  SLEEPING BEAR POINT...MOVING EAST AT 35 MPH.

  HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.

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Will it finally be our turn? The first watch of the season issued for Northern Lower MI until 6pm.

 

ww0354_radar.gif

 

SEL4

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 354
NWS STORM PREDICTION CENTER NORMAN OK
1050 AM EDT FRI JUL 8 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN LOWER MICHIGAN
LAKE HURON
LAKE MICHIGAN

* EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1050 AM UNTIL
600 PM EDT.

* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SUMMARY...SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE
EASTWARD THROUGH THE AFTERNOON ACROSS NORTHERN LOWER MICHIGAN. THE
STORM ENVIRONMENT WILL SUPPORT A RISK FOR SUPERCELLS CAPABLE OF
PRODUCING LARGE HAIL AND DAMAGING GUSTS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES EAST
NORTHEAST OF PELLSTON MICHIGAN TO 25 MILES WEST SOUTHWEST OF
HOUGHTON LAKE MICHIGAN. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27030.


...THOMPSON

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All CAMs show several helicity streaks across the state, I would watch once things warm up if we don't get some tornadoes today.

 

Directional shear is forecasted to decrease as the day progresses with the shortwave unraveling. So the transition to a squall line should happen fairly quickly (per the Hi-Res models).

 

But yeah, things could get dicey for a little bit with these supercells. 

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