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April 21-24th Severe Weather


SEMIweather

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Was on that cell earlier that went south of St. Louis. The meso was completely rain wrapped once it crossed the river. I am almost certain there was a tornado in it. When we were in Waterloo, IL (not sure exact time) the inflow winds were very strong (40-45) out of the SE sustained with blinding rain and am thinking that a tornado most likely went 1-2 miles n of me while I was in town. Strongest inflow I have seen for a while. Needless to say we did not stay in town long and once we got east could not make anything out as it was still wrapped in rain. I did not want to get directly in front of the meso because i knew it was rain wrapped and also dark out.. We did not decide to go into MO because of the terrible terrain south of I-70. The sup we were on did have a nice beaver cloud on it. I wished we saw it in daylight. It was illuminated by lightning. On my way back home now.

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE PADUCAH KY

1124 PM CDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...

NORTHERN DAVIESS COUNTY IN NORTHWEST KENTUCKY...

SOUTHERN SPENCER COUNTY IN SOUTHWEST INDIANA...

* UNTIL MIDNIGHT CDT.

* AT 1118 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR STANLEY...

MOVING NORTHEAST AT 65 MPH. THIS STORM HAS A HISTORY OF

SIGNIFICANT DAMAGE TO HOMES.

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DAY 1 CONVECTIVE OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1221 AM CDT SAT APR 23 2011

VALID 231200Z - 241200Z

...THERE IS A SLGT RISK OF SVR TSTMS PORTIONS CENTRAL TX TO CENTRAL

APPALACHIANS...

...SYNOPSIS...

IN MID-UPPER LEVELS...BROADLY CYCLONIC FLOW IS FCST OVER MUCH OF WRN

CONUS...WITH SWLYS DOWNSTREAM OVER CENTRAL AND ERN STATES.

MID-UPPER CYCLONE NOW ANALYZED OVER ERN DAKOTAS/WRN MN IS FCST TO

WEAKEN INTO OPEN-WAVE TROUGH NEAR LS BY START OF PERIOD...THEN

EJECT/ACCELERATE TOWARD FAR ERN QUE AND LABRADOR BY 24/12Z. WEAK

SHORTWAVE TROUGH CURRENTLY OVER CENTRAL/SRN CA IS FCST TO MOVE

GENERALLY EWD ACROSS CENTRAL ROCKIES DURING MIDDAY TO KS BY

24/00Z...WEAKENING THE WHOLE TIME BUT STILL IDENTIFIABLE IN MOST

PROGS OVER IL BY END OF PERIOD. W OF CA...MOISTURE CHANNEL IMAGERY

INDICATES ROBUST SPEED MAX DIGGING SEWD TOWARD 130W...RIMMED ON N

AND NW FRINGES BY PRONOUNCED SWATH OF SUBSIDENCE. THIS FEATURE AND

EMBEDDED/MINOR SHORTWAVES WILL CONTRIBUTE TO GEN HEIGHT FALLS AND

AMPLIFICATION OF TROUGHING OVER GREAT BASIN DURING LATTER HALF OF

PERIOD.

AT SFC...COLD FRONT ASSOCIATED WITH NRN-STREAM TROUGH WILL MOVE EWD

ACROSS LOWER GREAT LAKES AND ST. LAWRENCE VALLEY REGIONS...WHILE

ONLY DRIFTING SEWD THEN BECOMING QUASISTATIONARY FROM OH SWWD OVER

OZARKS. SWRN SEGMENT OF THIS FRONT WILL BE ALIGNED PARALLEL TO SRN

FRINGE OF STRONGEST MID-UPPER LEVEL WINDS...HOWEVER...CONVECTIVE

EFFECTS SHOULD SHUNT EFFECTIVE SFC FRONTAL ZONE SWD OVER N TX...SERN

OK...AR AND OH VALLEY REGION.

...CENTRAL TX TO CENTRAL APPALACHIANS...

FRONTAL ZONE AND RELATED AGGREGATION OF CONVECTIVE OUTFLOWS WILL BE

PRIMARY FOCI FOR CONVECTIVE DEVELOPMENT AND MAINTENANCE THROUGH

PERIOD. SFC-BASED TSTMS MAY DEVELOP OVER OH VALLEY PORTION OF

OUTLOOK AREA INITIALLY WHERE ELEVATED MIXED-LAYER CAPPING AND

RELATED MLCINH WILL BE WEAKEST.

WITH SWWD EXTENT ACROSS OZARKS AND RED RIVER REGION...CONVECTION

SHOULD FORM THROUGHOUT AFTERNOON AND EVENING IN NODES AND EPISODES.

DEEP-LAYER SHEAR WILL BE FAVORABLE FOR SVR...INCLUDING BLEND OF

SUPERCELL AND BOW MODES...ACROSS ENTIRE CORRIDOR. DEEP-LAYER LAPSE

RATES WILL DIMINISH WITH NEWD EXTENT FROM MS RIVER...WITH PEAK

AFTERNOON MLCAPE VALUES 2500-3500 J/KG FROM PORTIONS N TX ACROSS

SERN OK AND AR. MID-UPPER WINDS PARALLEL TO BOUNDARY WILL SUPPORT

FAIRLY RAPID TRANSITION FROM DISCRETE DEVELOPMENT TO QUASI-LINEAR

STRUCTURES. HOWEVER...ANY RELATIVELY DISCRETE/EARLY TSTMS...THAT

CAN MATURE BEFORE ADDITIONAL BACKBUILDING OCCURS IN CLOSE

PROXIMITY...MAY BECOME SUSTAINED SUPERCELLS.

A FEW TORNADOES PROBABLY WILL OCCUR...AIDED BY BOUNDARY EFFECTS ON

LOCAL SCALES. GREATEST OVERLAP OF LARGE CAPE...RICH LOW-LEVEL

MOISTURE...RELATIVELY LOW LCL AND FAVORABLE LOW-LEVEL SHEAR MAY BE

FROM ERN OK ACROSS PORTIONS AR. LARGE HAIL SHOULD BE MOST COMMON

THREAT. SIGNIFICANT AND PARTICULARLY DAMAGING HAIL IS MOST PROBABLE

FROM MS VALLEY SWWD WHERE DEEP CAPE...STEEP LAPSE RATES ALOFT...AND

FAVORABLE SHEAR WILL BE AVAILABLE. DAMAGING DOWNDRAFTS ALSO ARE

EXPECTED. OVERALL SVR THREAT WILL DIMINISH AND BECOME MORE

FRAGMENTED AFTER 03Z...WITH ONSET OF SFC DIABATIC COOLING AND

GREATEST COVERAGE OF OUTFLOW AIR...BUT MAY PERSIST LONGEST INTO

EVENING OVER AR/OK/TX PORTIONS OF OUTLOOK.

..EDWARDS/ROGERS.. 04/23/2011

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I was sitting in the cockpit when this went down..we were getting ready to leave and there was little warning in the terminal. No real damage around us but the front part of the old terminal got whacked pretty good. lots of debris on the ramp. First for me, we evacuated into the terminal and everyone was quite surprised that the airport basically took almost a direct hit. Chaos in and around the airport for quite some time.

We felt the pressure drop and saw it on the altimeter in the cockpit....I immediately thought tornado once i saw that. Missed us on the Delta gates by maybe less than a 1/4 mile. We got a few pelts of hail on the fuselage during the heaviest weather and felt the airplane get thumped by the gust. Lots of lightning too. When it was over i went outside to check the aircraft and there was lots of small debris on the ramp. Bits of leaves, larger chunks of insulation, roofing, shingles, and some bits of plywood. Immediately knew we had experienced a tornado and was looking at debris picked up from prior destruction. hard to say how strong it was but by what i saw outside the terminal and surrounding I'd guess a strong 1 to possibly EF-2.

Interesting night to say the least!!!!

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I was sitting in the cockpit when this went down..we were getting ready to leave and there was little warning in the terminal. No real damage around us but the front part of the old terminal got whacked pretty good. lots of debris on the ramp. First for me, we evacuated into the terminal and everyone was quite surprised that the airport basically took almost a direct hit. Chaos in and around the airport for quite some time.

We felt the pressure drop and saw it on the altimeter in the cockpit....I immediately thought tornado once i saw that. Missed us on the Delta gates by maybe less than a 1/4 mile. We got a few pelts of hail on the fuselage during the heaviest weather and felt the airplane get thumped by the gust. Lots of lightning too. When it was over i went outside to check the aircraft and there was lots of small debris on the ramp. Bits of leaves, larger chunks of insulation, roofing, shingles, and some bits of plywood. Immediately knew we had experienced a tornado and was looking at debris picked up from prior destruction. hard to say how strong it was but by what i saw outside the terminal and surrounding I'd guess a strong 1 to possibly EF-2.

Interesting night to say the least!!!!

Now that's a great first hand account, thanks, man this board gets the scoops.

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edit:first air shots

I have only seen a few so far

looks like at least EF2 damage in the NW STL metro

update:

new shots looks like EF3....only a few walls left with top story gone of some large houses just west of the airport

Between the STL storm last night, and the Raleigh storm last Saturday, what a weird week. Only the start of an active period too. Hope all on this board and the gen pop. Stay safe.ncant remember the last time 2 cities, 1 major, being hot directly by tornados in the same season, let alone, within a week.

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Well, first chase of the season for me. Left Mount Pleasant at 10am, and made it down to St. Louis before the supercell got there. We followed it a little ways (right before it tightened back up again and went through St. Louis). Ultimately the road network as well as hills and trees, and nightfall pretty much ended the chase. With the road network like it was, and fairly decent storm motions of ~40mph, they were a little tricky to keep up with. Still a great first chase to work out the kinks, and get back into the season.

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From the SPC wind reports...

*** 1 INJ *** 4 CAMPING TRAILERS BLOWN OVER AT KUHLS CAMPGROUND ... TREE FELL ON ONE CAMPER AND CUT IT IN HALF. :yikes:

Glad it wasn't a fatality... tough bastard apparently. Like that cyborg from 'Aliens'

South and east of Lawton, OK received 3-5" of rain last night along with large hail. For some places, the first rain in 2 months. Areas north and west were still left high and dry.

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Beau again

NEW.KPAH.TO.W.0066.110423T1920Z-110423T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE PADUCAH KY

220 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...

SOUTHEASTERN ALEXANDER COUNTY IN SOUTHERN ILLINOIS...

WESTERN MASSAC COUNTY IN SOUTHERN ILLINOIS...

SOUTHEASTERN PULASKI COUNTY IN SOUTHERN ILLINOIS...

NORTHERN BALLARD COUNTY IN WESTERN KENTUCKY...

NORTHWESTERN MCCRACKEN COUNTY IN WESTERN KENTUCKY...

* UNTIL 245 PM CDT.

* AT 220 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MOUND

CITY...MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE...

MOUND CITY...

MOUNDS...

BARLOW...

LA CENTER...

METROPOLIS...

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE PADUCAH KY

231 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...

SOUTHERN BALLARD COUNTY IN WESTERN KENTUCKY...

WESTERN MCCRACKEN COUNTY IN WESTERN KENTUCKY...

* UNTIL 300 PM CDT.

* AT 224 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO OVER

FAR EASTERN MISSISSIPPI COUNTY...OR NEAR WICKLIFFE...MOVING EAST AT

60 MPH.

* LOCATIONS IN THE WARNING INCLUDE...

LA CENTER...

BARLOW...

WICKLIFFE...

LOVELACEVILLE...

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It looks like we might have a situation this Sat. afternoon and evening of tornadoes developing within a line as it moves eastward from southern IL into KY in the area affected by the tornado watch. Perhaps somewhat similar to last Tues. April 19, although I don't expect anywhere near that number of reports.

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Don't come out of the basement yet, Beau. Stay safe

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE PADUCAH KY

250 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...

CENTRAL MASSAC COUNTY IN SOUTHERN ILLINOIS...

SOUTH CENTRAL POPE COUNTY IN SOUTHERN ILLINOIS...

NORTHWESTERN MCCRACKEN COUNTY IN WESTERN KENTUCKY...

* UNTIL 315 PM CDT.

* AT 247 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES WEST OF

METROPOLIS...MOVING EAST AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE...

METROPOLIS...

BROOKPORT...

post-277-0-53565800-1303588296.png

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New tornado watch:

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 186

NWS STORM PREDICTION CENTER NORMAN OK

230 PM CDT SAT APR 23 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

EXTREME SOUTHERN ILLINOIS

EXTREME SOUTHERN INDIANA

WESTERN AND CENTRAL KENTUCKY

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 230 PM UNTIL

700 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 10 MILES SOUTH OF PADUCAH

KENTUCKY TO 105 MILES EAST OF OWENSBORO KENTUCKY. FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU6).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.

DISCUSSION...A PERSISTENT MCS HAS BECOME MORE ORGANIZED EARLY THIS

AFTERNOON...AND WILL TRACK EAST-NORTHEASTWARD ALONG REMNANT OUTFLOW

BOUNDARY. THIS SETUP SUGGESTS THE POTENTIAL FOR BOW ECHO

DEVELOPMENT WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE.

ALSO...FAVORABLE LOW LEVEL SHEAR AND CONVERGENCE ALONG BOUNDARY WILL

POSE THE RISK OF A FEW TORNADOES ON THE LEADING EDGE OF THE

MCS...AND WITH ISOLATED CELLS AHEAD OF THE MAIN LINE.

Tornado probs are 60/30 on it (same as the max probs yesterday)

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