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July 8-10 Severe Threat


Hoosier

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That one cell in iowa is off a boundary that's been moving in Wisconsin past couple hours I believe.

Im on my phone right now looking at the radar, and it looks like that boundary will move through N. Illinois in the next few hours.

Thoughts on any initation to occur on the way here? because it seems whatever pops up, it struggles and dissipates.

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What a lame waste of strong instability.  It's like grilling out some nice steaks and before you get a chance to eat them they get thrown in the trash. 

 

Good analogy! lol

I think the front passed MSN by now.

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The strong storm went poof just before reaching my house on the west side of CR.  I did not want to go out and prepare the gauge/downspout/plants so I'm happy to see it vanish.

I did exactly that earlier today, just to see the line weaken from nice, solid orange and red to dark, then light green right over me. Just enough rain to wet the ground and annoy me while it dumped pretty good just a mile to the north and south of here. Saw one c-c lightning bolt. With this humidity, I would have gladly stood out in the rain to cool off. Even the basement is warm and muggy. It's usually pretty cool and dry down there.

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I did exactly that earlier today, just to see the line weaken from nice, solid orange and red to dark, then light green right over me. Just enough rain to wet the ground and annoy me while it dumped pretty good just a mile to the north and south of here. Saw one c-c lightning bolt. With this humidity, I would have gladly stood out in the rain to cool off. Even the basement is warm and muggy. It's usually pretty cool and dry down there.

Its currently 79°... with dewpoint at 76°, and humidity at 91%.

The humidity is relentless. Still sweating at 12am. Like a sauna.

Like posted previously, damn waste of energy

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Still 74, dewpoint 71 and humidity is 91%. I have a large, old-style window fan blowing out the back of the house and drawing "cooler" air in through the other side. Unfortunately, it's so damp it is like bordering on fog. There's patchy fog in the point forecast... who'd have guessed?

 

Stebo... I was laying in bed a bit ago and saw lightning to the north. Nothing at all on radar around Genesee co., so it must have been "heat lightning" from those storms to the south. The closest thing anywhere north that would have lightning was west of Gaylord. Could have been from there, I suppose, I didn't go out to investigate. I just know it wasn't from anything local.

 

How close were you to that light pole? I had one hit the top ground wire of the powerlines in my backyard last year ... like 50 feet away.  Needless to say, I went in the house after that. My hair stood up and everything. I heard a sizzle, crack and a boom that was probably 120 decibels or better. My ears rang for like five minutes. The ozone smell hung around for probably ten minutes... like the smell old electric trains make.

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Still 74, dewpoint 71 and humidity is 91%. I have a large, old-style window fan blowing out the back of the house and drawing "cooler" air in through the other side. Unfortunately, it's so damp it is like bordering on fog. There's patchy fog in the point forecast... who'd have guessed?

 

Stebo... I was laying in bed a bit ago and saw lightning to the north. Nothing at all on radar around Genesee co., so it must have been "heat lightning" from those storms to the south. The closest thing anywhere north that would have lightning was west of Gaylord. Could have been from there, I suppose, I didn't go out to investigate. I just know it wasn't from anything local.

 

How close were you to that light pole? I had one hit the top ground wire of the powerlines in my backyard last year ... like 50 feet away.  Needless to say, I went in the house after that. My hair stood up and everything. I heard a sizzle, crack and a boom that was probably 120 decibels or better. My ears rang for like five minutes. The ozone smell hung around for probably ten minutes... like the smell old electric trains make.

 

I was probably under a half mile, it happened at I-94 and M-10.

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I was probably under a half mile, it happened at I-94 and M-10.

Know right where that is... I used to commute to work from Flint to Mack & Jefferson. That had to be as bright as it was loud! Once I was driving home in the middle of the night and a bolt hit something maybe 1000 yds in front of me. I had to pull over for a few because I had this big red streak burned into my eyes.

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I'm perfectly fine with tonight being a bust.

 

This will help Detroit make a last minute rally for its first 90*F high and severe weather before the cold front passes through tommorrow with ample morning sunshine.

 

20130710_0155_DTW_irbw.jpg

 

 

 

 

Instability is certainly impressive already for this time of day but that cap ain't gonna break easy 

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Instability is certainly impressive already for this time of day but that cap ain't gonna break easy 

 

DTX seems moderately confidence that we'll at least one round midday.

 

Sky cover is meh, with a mix of hazy sunshine and low stratocumulus. But still, no convective debris.

 

It depends on how fast we can reach the convective temperature before the frontal passage.

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Eh.

 

 

MESOSCALE DISCUSSION 1367
NWS STORM PREDICTION CENTER NORMAN OK
0757 AM CDT WED JUL 10 2013

AREAS AFFECTED...NORTHEAST/EAST-CENTRAL IL AND NORTHERN/CENTRAL
INDIANA TO WESTERN OH

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 101257Z - 101530Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...SEVERE TSTM POTENTIAL INCLUDING HAIL/DAMAGING WINDS IS
EXPECTED TO GRADUALLY INCREASE INTO LATE MORNING/EARLY AFTERNOON
FROM NORTHEAST/EAST-CENTRAL IL INTO NORTHERN/CENTRAL INDIANA AND
EVENTUALLY WESTERN OH. WHILE A WATCH ISSUANCE IS NOT
IMMINENT...CURRENT THINKING IS THAT A SEVERE THUNDERSTORM WATCH
COULD BECOME NECESSARY BY LATE MORNING/MIDDAY.

DISCUSSION...SCATTERED ELEVATED TSTMS HAVE INCREASED EARLY THIS
MORNING ACROSS PORTIONS OF CENTRAL/NORTHEAST IL...WITH SOME OF THESE
STORMS HAVING STRONGER-TYPE MULTICELL/TRANSIENT SUPERCELLULAR
CHARACTERISTICS. THESE STORMS ARE OCCURRING NEAR A
SOUTHEASTWARD-MOVING COLD FRONT...ON THE NORTHEASTERN FRINGE OF
ONGOING STORMS/SURFACE COLD POOL AND POSSIBLE EMBEDDED MCV FROM
EAST-CENTRAL MO INTO SOUTHERN IL. THE 12Z OBSERVED SOUNDING FROM
LINCOLN IL SAMPLES AROUND 3500 J/KG OF MLCAPE IN THE PRESENCE OF
RELATIVELY HIGH BOUNDARY LAYER MOISTURE CONTENT /LOWER TO MIDDLE 70S
F SURFACE DEWPOINTS/ AND NEARLY 7.0 C/KM MID-LEVEL LAPSE RATES. THIS
OBSERVED SOUNDING...AND OTHER REGIONAL DERIVED WIND DATA...SAMPLES
THE EAST-SOUTHEAST MOVING MID-LEVEL SPEED MAX ACROSS IL/NORTHERN
INDIANA/LOWER MI WITH 35-40 KT WESTERLIES BETWEEN 3-6 KM.

ESPECIALLY GIVEN THAT CLOUD BREAKS ARE EVIDENT ACROSS NORTHERN
INDIANA/OH IN VISIBLE SATELLITE IMAGERY...THE BOUNDARY LAYER WILL
QUICKLY HEAT AND BECOME WEAKLY CAPPED AND MODERATE-STRONGLY
UNSTABLE...WITH MODIFICATIONS TO 12Z OBSERVED SOUNDINGS SUGGESTING
THAT SURFACE BASED STORMS/DAMAGING WIND POTENTIAL WILL BECOME MORE
PROBABLE AS TEMPERATURES REACH THE MIDDLE 80S F. IN
ALL...EXPECTATIONS ARE FOR STORMS TO INCREASE/INTENSIFY ALONG THE
COLD FRONT ACROSS PARTS OF IL/INDIANA/OH INTO THIS AFTERNOON...SUCH
THAT A WATCH MAY BE NEEDED FOR PORTIONS OF THE REGION FOR A SEVERE
HAIL/DAMAGING WIND THREAT VIA ORGANIZED MULTICELLS/LINE SEGMENTS AND
POSSIBLY SOME SUPERCELLS.

..GUYER/THOMPSON.. 07/10/2013

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Honestly the cap doesn't seem too horrible on DTX's 12z sounding. We'll see if anything can get going in a few hours. I'm about 10 miles NE of where I'm usually located, and really, it wouldn't surprise me if that makes all the difference w/ regards to seeing any action today. Parameters seem to support gusty winds with any storm that develops.

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Instability is certainly impressive already for this time of day but that cap ain't gonna break easy 

10:15AM. SPC mesoanalysis says 3000-3500 CAPE for southern Michigan. I've rarely seen CAPE that high at the 10:00 hour in northern states. 500mb winds are about 40 knots in this area.  Maybe I can chase something near me.  Mesoscale discussion already in the area.

SUMMARY...SEVERE TSTM POTENTIAL INCLUDING HAIL/DAMAGING WINDS IS   EXPECTED TO GRADUALLY INCREASE INTO LATE MORNING/EARLY AFTERNOON   FROM NORTHEAST/EAST-CENTRAL IL INTO NORTHERN/CENTRAL INDIANA AND   EVENTUALLY WESTERN OH. WHILE A WATCH ISSUANCE IS NOT   IMMINENT...
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HAZARDOUS WEATHER OUTLOOKNATIONAL WEATHER SERVICE DETROIT/PONTIAC MI437 AM EDT WED JUL 10 2013MIZ047>049-053>055-060>063-068>070-075-076-082-083-110845-MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-437 AM EDT WED JUL 10 2013THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN..DAY ONE...TODAY AND TONIGHTTHUNDERSTORMS ARE POSSIBLE TODAY WITH THE STRONGEST STORMSAPPROACHING SEVERE LIMITS. THE PRIMARY HAZARD WILL BE DAMAGINGWIND GUSTS NEAR 50 MPH...BUT HALF INCH HAIL AND HEAVY RAINFALL AREALSO POSSIBLE. STORM MOTION WILL BE WEST TO EAST AT 40 MPH.THUNDERSTORM DEVELOPMENT WILL BE POSSIBLE AT ANY TIME OF THEMORNING THROUGH THE AFTERNOON...BUT WITH GREATER CHANCES TOWARDTHE OHIO BORDER BY EARLY AFTERNOON. A COLD FRONT WILL MOVESOUTHWARD FROM NORTHERN LOWER MICHIGAN DURING THE MORNING TOSOUTH OF THE OHIO BORDER BY LATE AFTERNOON AND BRING AND END TOTHE STORM POTENTIAL.

LOL! Are they in the same Michigan that I am? And then the point forecast calls for a high of 83. It's noon, and

 

bkn.png

Mostly Cloudy

86°F

30°C

  • Humidity63%
  • Wind SpeedW 8 mph
  • Barometer29.81 in (1008.7 mb)
  • Dewpoint72°F (22°C)
  • Visibility10.00 mi
  • Heat Index92°F (33°C)

Last Update on 10 Jul 11:53 am EDT

 

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NOAA receiver just went off... a SVR watch for ONE county... Oakland. How odd is that?

 

Okay... KIH29 must trigger for Oakland county... hence only one county in the watch, which is actually:

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH406 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREASIN MICHIGAN THIS WATCH INCLUDES 7 COUNTIESIN SOUTHEAST MICHIGANLENAWEE               MACOMB                MONROEOAKLAND               ST. CLAIR             WASHTENAWWAYNE

And several dozen counties in surrounding states. I see some storms been riding the MI/IN/OH border for a while, only warning thus far is for counties northwest of Fort Wayne.

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