Severe Thunderstorm Warning 163, NWS St. Louis, MO

000 
WWUS53 KLSX 222118
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
418 PM CDT MON JUN 22 2009

ILC163-222145-
/O.CON.KLSX.SV.W.0163.000000T0000Z-090622T2145Z/
ST. CLAIR IL-
418 PM CDT MON JUN 22 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHERN ST. CLAIR COUNTY...

AT 415 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR PADERBORN...MOVING
SOUTHWEST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
PADERBORN...NEW ATHENS...FAYETTEVILLE AND ST. LIBORY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3845 8989 3844 8971 3831 8971 3832 9003
      3833 9003 3835 9006 3844 9013
TIME...MOT...LOC 2116Z 311DEG 8KT 3845 8992

$$

KANOFSKY

000 
WWUS53 KLSX 222131
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
431 PM CDT MON JUN 22 2009

ILC163-222141-
/O.CAN.KLSX.SV.W.0163.000000T0000Z-090622T2145Z/
ST. CLAIR IL-
431 PM CDT MON JUN 22 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ST. CLAIR COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

LAT...LON 3845 8989 3844 8971 3831 8971 3832 9003
      3833 9003 3835 9006 3844 9013
TIME...MOT...LOC 2131Z 311DEG 8KT 3843 8989

$$

KANOFSKY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
318 PM CDT MON JUN 22 2009

.DISCUSSION...
/315 PM CDT MON JUN 22 2009/
...DISCUSSION...
THE HEAT WILL CONTINUE TO BE THE BIG STORY OVER THE NEXT WEEK. THE
UPPER RIDGE HOLDS FIRM THROUGH THE WEEK.  THERE MAY BE A COUPLE OF
CHANCES AT LIMITED RELIEF IN THE FORM OF GLANCING BLOWS FROM COLD
FRONTS...UNFORTUNATELY THEY MAY ACTUALLY MAKE THE HEAT INDICES
HIGHER BY POOLING THE DEW POINTS ALONG AND AHEAD OF THE FRONTS.  IN
THE MEAN TIME...THE EXCESSIVE HEAT WARNING FOR THE STL METRO AREA
AND THE HEAT ADVISORY FOR THE REST OF THE CWA WILL REMAIN IN EFFECT
UNTIL WEDNESDAY EVENING.

...SHORT TERM...TONIGHT...
SHOULD BE SOME ISOLD/SCTD CONVECTION ONGOING FROM THIS AFTERNOON
EAST AND SOUTH OF THE STL METRO IN RESPONSE TO A COUPLE BOUNDARIES
ASSOC WITH EARLIER CONVECTION. SPC MESOANALYSIS PAGE SHOWS 4500
J/KG OF UNCAPPED ENERGY TO TAP FOR ANY STORMS ABLE TO GO
UP...THOUGH WEAK MID-LEVEL LAPSE RATES ON THE ORDER OF 5.5 C/KM
AND EFFECTIVE SHEAR VALUES OF 25-30 KTS WILL LIMIT THE SEVERE
POTENTIAL. AS IN THE PAST FEW DAYS...GUSTY MICROBURSTS ON THE
ORDER OF 40-50 MPH CAN/T BE RULES OUT.

TUESDAY AND WEDNESDAY APPEAR HOT AND HUMID...PERSISTENCE PUTS TEMPS
IN THE MID TO UPPER 90S.

THE UPPER RIDGE DRIFTS WESTWARD AS THE WEEK PROGRESSES. THIS ALLOWS
A SHORT WAVE THAT TOPS RIDGE TO PUSH A COLD FRONT INTO THE NORTHERN
CWA AND WILL BE THE FOCUS FOR AT LEST ISOLD CONVECTION THURSDAY PM.
THIS SHOULD BE A GLANCING BLOW AS THE FRONT TRIES TO BACKDOOR THE
CWA FROM THE NORTHEAST.

THERE MAY BE A NEED FOR HEAT PRODUCTS...ESPECIALLY ALONG AND SOUTH
OF I-70.  WENT AT OR ABOVE GUIDANCE GIVEN PERSISTENCE.

...EXTENDED...FRIDAY THROUGH MONDAY...
THE PERIOD STARTS WITH FRONT STILL DRAPED ACROSS THE NE SECTIONS OF
THE CWA.  FRIDAY NIGHT THE FRONT LIFTS BACK NORTH. TEMPERATURES ON
FRIDAY WILL BE DEPENDENT ON EXACT FRONTAL PLACEMENT AND ASSOC CLOUD
COVER...ESPECIALLY OVER THE NORTHERN SECTIONS OF THE CWA.
ELSEWHERE...THE FRONT WILL HAVE LITTLE AFFECT.  THE RIDGE REBOUNDS
ON SATURDAY WITH 850 TEMPS AT LEAST IN THE LOW 20S...AND +26 C
ACCORDING TO THE ECMWF...THEREFORE HAVE BUMPED TEMPS BACK UP.

ANOTHER SHORT WAVE TOPS THE RIDGE SATURDAY NIGHT AND PUSHES ANOTHER
COLD FRONT INTO THE AREA SUNDAY.  THE GFS/ECMWF HAVE THIS FRONT CLEARING
THE CWA AND STALLING OUT ALONG THE MO/AR BORDER...BUT GIVEN THE
STRENGTH OF THE RIDGE...NOT CONFIDENT THAT IT WILL MAKE IT THAT FAR
THOUGH.

ADDITIONAL HEAT RELATED PRODUCTS WILL BE NECESSARY FOR THE WEEKEND.
WENT ON THE WARMER SIDE OF GUIDANCE AS PERSISTENCE SEEMS TO BE THE
WAY TO GO.

MILLER

&&

.AVIATION...
/1215 PM CDT MON JUN 22 2009/
FOR THE 18Z TAFS...
HIGH PRESSURE OVERHEAD WILL BRING GENERALLY VFR CONDITIONS THROUGH
THE PERIOD ALTHOUGH ISOLD AFTN -TSRA MAY PRODUCE BRIEF MVFR
CIGS/VSBYS. MAINTAINED AFTN CB IN THE TAFS DUE TO SPARSE COVERAGE
AND MODEL DISAGREEMENT. BEST CHANCE FOR -TSRA APPEARS TO BE EAST
OF STL WHERE CU FIELD HAS BEGUN TO DVLP. WINDS WILL BECOME LIGHT
AND VARIABLE TONIGHT AS THE SFC RIDGE BUILDS IN.

KANOFSKY

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...HEAT ADVISORY UNTIL 7 PM CDT WEDNESDAY FOR AUDRAIN-BOONE-
     CALLAWAY-COLE-CRAWFORD-FRANKLIN-GASCONADE-IRON-JEFFERSON-
     KNOX-LEWIS-LINCOLN-MADISON-MARION-MONITEAU-MONROE-
     MONTGOMERY-OSAGE-PIKE-RALLS-REYNOLDS-SHELBY-ST. FRANCOIS-
     STE. GENEVIEVE-WARREN-WASHINGTON.

     EXCESSIVE HEAT WARNING UNTIL 7 PM CDT WEDNESDAY FOR ST. CHARLES-
     ST. LOUIS-ST. LOUIS CITY.

IL...HEAT ADVISORY UNTIL 7 PM CDT WEDNESDAY FOR ADAMS IL-BOND IL-
     BROWN IL-CALHOUN IL-CLINTON IL-FAYETTE IL-GREENE IL-JERSEY
     IL-MACOUPIN IL-MARION IL-MONROE IL-MONTGOMERY IL-PIKE IL-
     RANDOLPH IL-WASHINGTON IL.

     EXCESSIVE HEAT WARNING UNTIL 7 PM CDT WEDNESDAY FOR MADISON IL-
     ST. CLAIR IL.

&&

WFO LSX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
338 PM CDT MON JUN 22 2009

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-231200-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX-LEWIS-
SHELBY-MARION-MONROE-RALLS-PIKE-BOONE-AUDRAIN-MONITEAU-COLE-OSAGE-
CALLAWAY-MONTGOMERY-LINCOLN-GASCONADE-WARREN-ST. CHARLES-FRANKLIN-
ST. LOUIS-ST. LOUIS CITY-JEFFERSON-CRAWFORD-WASHINGTON-
ST. FRANCOIS-STE. GENEVIEVE-IRON-MADISON-REYNOLDS-
338 PM CDT MON JUN 22 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TONIGHT

THE COMBINATION OF HIGH TEMPERATURES AND HUMIDITY WILL CAUSE HEAT
INDICES TO REMAIN AROUND 107 DEGREES THIS EVENING IN THE ST.
LOUIS METROPOLITAN AREA WHERE AN EXCESSIVE HEAT WARNING HAS BEEN
ISSUED. ELSEWHERE...HEAT INDICES WILL REMAIN AROUND 105 DEGREES
THIS EVENING...SO A HEAT ADVISORY HAS BEEN ISSUED.

ISOLATED THUNDERSTORMS ARE POSSIBLE THIS EVENING. SOME OF THE
STORMS MAY BE STRONG CAPABLE OF PRODUCING GUSTY WINDS TO 50 MPH
AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE HEAT WILL CONTINUE TO BUILD ACROSS THE REGION WITH AFTERNOON
HEAT INDEX READINGS ABOVE 100 DEGREES MOST OF THIS WEEK. THE ST.
LOUIS METROPOLITAN AREA WILL BE HOTTER BECAUSE OF THE URBAN HEAT
ISLAND...WITH AFTERNOON HIGHS IN THE UPPER 90S AND HEAT INDEX
READINGS OF 105 DEGREES OR GREATER. THE EXCESSIVE HEAT WARNING
AND HEAT ADVISORY CONTINUES THROUGH WEDNESDAY EVENING.

THERE IS A CHANCE FOR THUNDERSTORMS THURSDAY NORTH OF I-70 AS A
COLD FRONT APPROACHES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

&&

FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR
WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1

MILLER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
319 PM CDT MON JUN 22 2009

ILZ101-222115-
ST. CLAIR IL-
319 PM CDT MON JUN 22 2009

...SIGNIFICANT WEATHER ADVISORY FOR ST. CLAIR COUNTY UNTIL 415 PM
CDT...

AT 317 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR BELLEVILLE...MOVING SOUTHEAST AT 10 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE
CAPABLE OF 1 TO 2 INCHES OF RAINFALL...WHICH COULD LEAD TO LOCALIZED
FLOODING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  SWANSEA...
  BELLEVILLE...
  SHILOH...
  FREEBURG...
  SMITHTON...
  NEW ATHENS...
  FAYETTEVILLE...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

KANOFSKY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
328 PM CDT MON JUN 22 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

0327 PM     LIGHTNING        BELLEVILLE              38.53N 90.00W
06/22/2009                   ST. CLAIR          IL   COUNTY OFFICIAL

            LIGHTNING STRUCK A TRANSFORMER IN BELLEVILLE.

&&

EVENT NUMBER LSX0902479

CVKING