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Plains May 27-30 severe weather threat?


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MN

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN

239 PM CDT SAT MAY 28 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...

SOUTHWESTERN CARVER COUNTY IN EAST CENTRAL MINNESOTA...

SOUTHWESTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...

EASTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...

* UNTIL 315 PM CDT

* AT 234 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO NEAR

GAYLORD...

Was on this storm from the get go, Saw a few dozen chasers out surprisingly. It never really produced other then the initial brief spin up but it felt good to see weak some rotation in the sky. Lots of hail though with this storm.

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post-193-0-24343600-1306631189.jpg

post-193-0-50497300-1306631266.jpg

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as of now I will be planning on doing some Colorado chasing and see some potential especially on Sunday just East of Denver.

not much going on so I will post this:

but he is on this cell

COC041-290230-

/O.CON.KPUB.SV.W.0019.000000T0000Z-110529T0230Z/

EL PASO CO-

811 PM MDT SAT MAY 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL

EL PASO COUNTY UNTIL 830 PM MDT...

AT 806 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS

STORM WAS LOCATED NEAR RUSH...OR 36 MILES EAST OF COLORADO SPRINGS...

MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...

RUSH.

RURAL AREAS OF EXTREME EASTERN EL PASO COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER

HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR

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

HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE

INTO AREAS WHERE WATER COVERS THE ROAD.

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP

QUICKLY FROM SEVERE THUNDERSTORMS.

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ILstormchser reported the tornado

gustnado or possible

tornado 5 sw of this location.

sustained inflow of 40-45 mph into

the feature in question

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE DENVER CO

854 PM MDT SAT MAY 28 2011

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...

CENTRAL LINCOLN COUNTY IN EAST CENTRAL COLORADO

* UNTIL 945 PM MDT

* AT 853 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 18 MILES WEST OF

BOYERO...OR 28 MILES SOUTH OF LIMON. THIS STORM WAS MOVING EAST

AT 35 MPH. A TRAINED WEATHER SPOTTER ALSO REPORTED A POSSIBLE

TORNADO WITH THIS STORM.

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Yeah, not the greatest, but I knew if I didnt go, there would be a tor, so I took the gamble.

Yeah I was going back and forth all morning whether to go or not. One moment I was convinced surface based initiation would occur, and the next I'd be convinced the cap would hold. Before I knew it, it was early afternoon and it was too late to make it to the target area. It could have went either way in my mind. Despite its recent record, if I would have seen more action displayed on the HRRR I would have been heading south.

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Hot damn...

DAY 1 CONVECTIVE OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1250 AM CDT SUN MAY 29 2011

VALID 291200Z - 301200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM ERN SD EWD ACROSS PORTIONS

OF THE MIDWEST AND LOWER GREAT LAKES...

...THERE IS A SLGT RISK OF SVR TSTMS OVER PORTIONS OF THE SRN

PLAINS...

..SYNOPSIS

THE PATTERN WILL BECOME HIGHLY AMPLIFIED TODAY WITH A RIDGE OVER THE

ERN CONUS AND A STRONG UPPER LOW/TROUGH ACROSS THE WRN

STATES...RESULTING IN A BROAD BELT OF SWLY FLOW ACROSS THE PLAINS

STATES. AT THE SURFACE...LOW PRESSURE WILL DEEPEN OVER CO...WITH A

DRYLINE EXTENDING SWD ACROSS WRN KS INTO THE TX S PLAINS. FARTHER

N...STORMS WILL BE ONGOING ACROSS THE MID MO VALLEY AND SHOULD

PERSIST EWD ALONG/N OF A RETREATING WARM FRONT INTO IA AND NRN IL.

WHILE HEIGHT RISES/RIDGING WILL OCCUR MOST OF THE DAY OVER THE

PLAINS...UPPER HEIGHT FALLS/COOLING ALOFT WILL AFFECT THE NRN/CNTRL

HIGH PLAINS OVERNIGHT. AN INTENSE SLY LOW LEVEL JET WILL HELP FOCUS

A SECONDARY AREA OF NOCTURNAL SEVERE OVER PORTIONS OF SD/ND AND WRN

MN.

..MID MO VALLEY EWD ACROSS THE MIDWEST

MODELS ARE IN GOOD AGREEMENT IN DEPICTING AN AREA OF

THUNDERSTORMS...SOME SEVERE WITH LARGE HAIL...ACROSS ERN NEB/NRN

MO/IA AT THE START OF THE PERIOD...BEING FORCED MAINLY BY WARM

ADVECTION NEAR A RETREATING WARM FRONT. MID LEVEL FLOW IN EXCESS OF

40 KTS IS EXPECTED TO HELP STORMS MERGE INTO AN MCS. THIS SCENARIO

IS SUPPORTED BY HIGH RES MODELS AS WELL AS THE GFS...NAM...AND

ECMWF. THIS POTENTIAL MCS WILL BE MAINTAINED BY STRONG LOW LEVEL

WARM ADVECTION/VEERING PROFILES...FEEDING A MOIST AND STRONGLY

UNSTABLE AIR MASS NWD. INDICATIONS ARE A CONCENTRATED SWATCH OF

DAMAGING WINDS MAY OCCUR FROM ERN IA INTO NRN IL INCLUDING THE

CHICAGO AREA...AND PROCEEDING EWD ACROSS LOWER MI. ALTHOUGH STORM

MODE MAY DISRUPT SUPERCELL AND TORNADO POTENTIAL...AREAS OF ROTATION

MAY BE EMBEDDED WITHIN THE LINE. HIGH PRECIPITABLE WATER CONTENT

SHOULD FURTHER HELP TO ENHANCE PRECIP LOADING/DOWNDRAFT POTENTIAL.

..SRN PLAINS DRYLINE

STRONG HEATING ACROSS THE SRN PLAINS WILL RESULT IN EROSION OF

INHIBITION AND LEAD TO AN UNCAPPED AND UNSTABLE ATMOSPHERE ALONG THE

DRYLINE FROM SWRN KS INTO W TX THIS AFTERNOON. WITH THE SURFACE LOW

TO THE W...THE LOW LEVEL JET IS EXPECTED TO BE A BIT BACKED AND WILL

HELP MAINTAIN DEEPLY MIXED BUT SUFFICIENT LOW LEVEL MOISTURE NWWD

INTO THE ZONE OF CONVERGENCE. THE RESULT SHOULD BE SCATTERED SEVERE

THUNDERSTORMS CAPABLE OF LARGE HAIL. LOCALLY DAMAGING DOWNBURSTS ARE

LIKELY AS WELL...GIVEN LOW SUB CLOUD RH...AS WELL AS SHORT

HODOGRAPHS AND LACK OF STORM TILT...LEADING TO PRECIPITATION

LOADING. A NARROW THREAT ZONE IS ANTICIPATED GIVEN SLOW FORECAST

STORM MOTIONS AND FOCUSED UNCAPPED DRYLINE.

post-147-0-29734200-1306648211.gif

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Hot damn...

DAY 1 CONVECTIVE OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1250 AM CDT SUN MAY 29 2011

VALID 291200Z - 301200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM ERN SD EWD ACROSS PORTIONS

OF THE MIDWEST AND LOWER GREAT LAKES...

...THERE IS A SLGT RISK OF SVR TSTMS OVER PORTIONS OF THE SRN

PLAINS...

..SYNOPSIS

THE PATTERN WILL BECOME HIGHLY AMPLIFIED TODAY WITH A RIDGE OVER THE

ERN CONUS AND A STRONG UPPER LOW/TROUGH ACROSS THE WRN

STATES...RESULTING IN A BROAD BELT OF SWLY FLOW ACROSS THE PLAINS

STATES. AT THE SURFACE...LOW PRESSURE WILL DEEPEN OVER CO...WITH A

DRYLINE EXTENDING SWD ACROSS WRN KS INTO THE TX S PLAINS. FARTHER

N...STORMS WILL BE ONGOING ACROSS THE MID MO VALLEY AND SHOULD

PERSIST EWD ALONG/N OF A RETREATING WARM FRONT INTO IA AND NRN IL.

WHILE HEIGHT RISES/RIDGING WILL OCCUR MOST OF THE DAY OVER THE

PLAINS...UPPER HEIGHT FALLS/COOLING ALOFT WILL AFFECT THE NRN/CNTRL

HIGH PLAINS OVERNIGHT. AN INTENSE SLY LOW LEVEL JET WILL HELP FOCUS

A SECONDARY AREA OF NOCTURNAL SEVERE OVER PORTIONS OF SD/ND AND WRN

MN.

..MID MO VALLEY EWD ACROSS THE MIDWEST

MODELS ARE IN GOOD AGREEMENT IN DEPICTING AN AREA OF

THUNDERSTORMS...SOME SEVERE WITH LARGE HAIL...ACROSS ERN NEB/NRN

MO/IA AT THE START OF THE PERIOD...BEING FORCED MAINLY BY WARM

ADVECTION NEAR A RETREATING WARM FRONT. MID LEVEL FLOW IN EXCESS OF

40 KTS IS EXPECTED TO HELP STORMS MERGE INTO AN MCS. THIS SCENARIO

IS SUPPORTED BY HIGH RES MODELS AS WELL AS THE GFS...NAM...AND

ECMWF. THIS POTENTIAL MCS WILL BE MAINTAINED BY STRONG LOW LEVEL

WARM ADVECTION/VEERING PROFILES...FEEDING A MOIST AND STRONGLY

UNSTABLE AIR MASS NWD. INDICATIONS ARE A CONCENTRATED SWATCH OF

DAMAGING WINDS MAY OCCUR FROM ERN IA INTO NRN IL INCLUDING THE

CHICAGO AREA...AND PROCEEDING EWD ACROSS LOWER MI. ALTHOUGH STORM

MODE MAY DISRUPT SUPERCELL AND TORNADO POTENTIAL...AREAS OF ROTATION

MAY BE EMBEDDED WITHIN THE LINE. HIGH PRECIPITABLE WATER CONTENT

SHOULD FURTHER HELP TO ENHANCE PRECIP LOADING/DOWNDRAFT POTENTIAL.

..SRN PLAINS DRYLINE

STRONG HEATING ACROSS THE SRN PLAINS WILL RESULT IN EROSION OF

INHIBITION AND LEAD TO AN UNCAPPED AND UNSTABLE ATMOSPHERE ALONG THE

DRYLINE FROM SWRN KS INTO W TX THIS AFTERNOON. WITH THE SURFACE LOW

TO THE W...THE LOW LEVEL JET IS EXPECTED TO BE A BIT BACKED AND WILL

HELP MAINTAIN DEEPLY MIXED BUT SUFFICIENT LOW LEVEL MOISTURE NWWD

INTO THE ZONE OF CONVERGENCE. THE RESULT SHOULD BE SCATTERED SEVERE

THUNDERSTORMS CAPABLE OF LARGE HAIL. LOCALLY DAMAGING DOWNBURSTS ARE

LIKELY AS WELL...GIVEN LOW SUB CLOUD RH...AS WELL AS SHORT

HODOGRAPHS AND LACK OF STORM TILT...LEADING TO PRECIPITATION

LOADING. A NARROW THREAT ZONE IS ANTICIPATED GIVEN SLOW FORECAST

STORM MOTIONS AND FOCUSED UNCAPPED DRYLINE.

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cref_t2sfc_f11.png

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Hmm Chicago in a slight risk, I believe that is a payout on a bet :P

Nice to see MI staying in the risk too, if we were to get convection to fire into a MCS, it would ride that instability/capping right through Chicago into S. Lower Michigan.

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Yeah, looking at the models this evening things have changed from being heavy on capping to a bustable cap now.

It's not even that so much...the game has changed majorly over the past 24 hours...we are now dealing with a classic progressive derecho situation...

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