Alert archive / Missouri / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 265, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Oct 24, 2010, 7:37 PM CDT for Crawford County, Franklin County, Gasconade County, Missouri. It was in force for 38 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 24, 2010, 7:37 PM CDT (00:37 UTC)
- Expired
- Oct 24, 2010, 8:15 PM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Crawford County, MO, Franklin County, MO, Gasconade County, MO
The radar
The St Louis radar (KLSX), 59 km from the middle of the area, began a volume at 00:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 24, 7:37 PM CDT | HAIL 0.7 | 3 Nnw Cuba, MO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.6 hours before the alert went out and 281 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1421 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1114 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
341 WUUS53 KLSX 250037 SVRLSX MOC055-071-073-250115- /O.NEW.KLSX.SV.W.0265.101025T0037Z-101025T0115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 737 PM CDT SUN OCT 24 2010 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI... FRANKLIN COUNTY IN EAST CENTRAL MISSOURI... GASCONADE COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 815 PM CDT * AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 9 MILES NORTHWEST OF BOURBON...AND MOVING NORTHEAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... UNION...ST. CLAIR...WASHINGTON...BEAUFORT...PARKWAY...JAPAN... STANTON...LESLIE...NOSER MILL AND MOSELLE. 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. && LAT...LON 3859 9105 3838 9086 3807 9148 3821 9159 TIME...MOT...LOC 0037Z 231DEG 24KT 3823 9137 WIND...HAIL 60MPH 1.00IN $$ CARNEY
1 follow-up statement
096 WWUS53 KLSX 250110 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 810 PM CDT SUN OCT 24 2010 MOC055-071-073-250120- /O.EXP.KLSX.SV.W.0265.000000T0000Z-101025T0115Z/ CRAWFORD MO-FRANKLIN MO-GASCONADE MO- 810 PM CDT SUN OCT 24 2010 ...THE SEVERE THUNDERSTORM WARNING FOR GASCONADE...FRANKLIN AND NORTHWESTERN CRAWFORD COUNTIES WILL EXPIRE AT 815 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 3859 9105 3838 9086 3807 9148 3821 9159 TIME...MOT...LOC 0110Z 231DEG 24KT 3837 9115 $$ CARNEY
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 24, 3:54 PM CDT, 3 hours 43 minutes earlier.
Area forecast discussion, Oct 24, 3:54 PM CDT, 3 hours 43 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 354 PM CDT SUN OCT 24 2010 .DISCUSSION... /223 PM CDT SUN OCT 24 2010/ CONCERNS WITH THIS FCST PACKAGE INCLUDE CONVECTIVE POTENTIAL TONIGHT...A STRONG COLD FRONT WITH A LINE OF STORMS MOVING THROUGH TOMORROW NIGHT...GUSTY WINDS ON TUE...AND MUCH COOLER TEMPERATURES TOWARDS THE END OF THE WEEK. COMPLEX LOW PRESSURE SYSTEM OVER THE CENTRAL PLAINS CONTINUES TO LIFT NEWD INTO THE GRTLKS REGION. AFTERNOON WATER VAPOR IMAGERY SHOWED ANOTHER SHORTWAVE LOCATED OVER THE SOUTHERN PLAINS...AND IT IS THIS FEATURES THAT WILL BE RESPONSIBLE FOR RENEWED SHRA/TSRA CHCS TONIGHT. CLOUDS HAVE THINNED SOMEWHAT AND BECOME MORE CUMULIFORM IN NATURE BASED ON SATELLITE IMAGERY AND A GLANCE OUT THE WINDOW. SPC MESOANALYSIS GRAPHICS HAVE SHOWN INCREASING CAPE ACROSS THE AREA...LIKELY DUE TO A COMBINATION OF INCREASING SFC MOISTURE BEING TRANSPORTED NWD...INSOLATION IN LOCATIONS WHERE CLOUDS HAVE STARTED TO DISSIPATE...AND FALLING TEMPERATURES ALOFT. SREF CAPE PROBABILITIES HIGHLIGHT THE SERN HALF OF THE CWA FROM 21Z THROUGH 06Z. AREA VWP/PROFILER OBS ARE CONSISTENT WITH MODEL DEPICTIONS OF A BROAD H85 LLJ THAT RAMPS UP TO 30-40 KTS DURING THE SAME TIME. GIVEN APPROACHING SHORTWAVE TROF AND ABOVE FACTORS...MAINTAINED CHC POPS AND INCREASED TO LIKELY ACROSS FAR ERN COUNTIES TO COVER EXPECTED SHRA/TSRA DEVELOPMENT TONIGHT. STILL LOOKS LIKE TOMORROW WILL BE DRY DURING THE DAY SINCE THE CWA WILL BE LOCATED BETWEEN SYNOPTIC SYSTEMS. A STRONG LOW PRESSURE SYSTEM BECOMES NEGATIVELY TILTED TOMORROW NIGHT AND IS EXPECTED TO DRIVE A CDFNT THROUGH THE REGION. AS DEPICTED BY THE MODELS...NOTABLE FEATURES WITH THIS SYSTEM INCLUDE A 50-60KT LLJ...PW VALUES INCREASING TO 1.25 INCHES AHEAD OF THE COLD FRONT...AND VERY STRONG SHEAR. THIS IS EXPECTED TO RESULT IN DVLPMT OF A SQUALL LINE THAT MOVES RAPIDLY ACROSS THE CWA ON MON NIGHT INTO TUE MORNING...AND SOME OF THE STORMS EMBEDDED IN THAT LINE MAY PRODUCE SEVERE WEATHER. WINDS THEN INCREASE MARKEDLY BEHIND THE FRONT ON TUE DUE TO THE TIGHT PRESSURE GRADIENT. ADDITIONALLY...CLRG SKIES WILL PROMOTE GOOD MIXING AND LEAD TO STRONGER GUSTS MIXING DOWN TO THE SURFACE. ATTM IT DOES NOT LOOK LIKE WE WILL MEET LOCAL CRITERIA FOR A WIND ADVISORY /SUSTAINED WINDS OF 30-39 MPH FOR AT LEAST ONE HOUR OR GUSTS OF 45-57 MPH/ BUT THIS WILL HAVE TO BE WATCHED BY LATER SHIFTS. ANOTHER VORT LOBE ROTATES THROUGH THE REGION ON WED NIGHT INTO THU. EXPECTING ONLY AN INCREASE IN CLOUDS GIVEN LIMITED MOISTURE AND ISENTROPIC DESCENT NOTED ON THE 290-300K SFCS. MODELS STILL SHOW A SECONDARY SURGE OF COLDER AIR SWD INTO MO/IL WITH THIS VORT LOBE...THEREFORE MAINTAINED GOING COOL TEMPERATURES FOR THU/FRI. FRI NIGHT LOOKS ESPECIALLY CHILLY GIVEN THE SFC HIGH BUILDING IN OVERHEAD AND THE POTENTIAL FOR GOOD RADIATIONAL COOLING CONDITIONS IF SKIES REMAIN CLEAR. SFC HIGH SHIFTS EWD ON SAT BUT GFS/ECMWF BEGIN TO DIVERGE. GIVEN MODEL DISAGREEMENT...REFRAINED FROM ADDING SCHC POPS TO THE EXTENDED FCST AND STAYED CLOSE TO HPC TEMPERATURE GUIDANCE FOR SAT AND BEYOND. KANOFSKY && .AVIATION... /1232 PM CDT SUN OCT 24 2010/ CIGS AND TSTM POTENTIAL ARE THE PRIMARY CONCERNS FOR THIS PACKAGE. A QUICK CIG LOWERING TO HIGH END MVFR THIS AFTN ASSOC WITH STRATUS DECK IS POSSIBLE...BUT DUE TO LIMITED TIME AT THAT LEVEL...CHOSE NOT TO INCLUDE TEMPO GROUP. MVFR CIGS AND IFR VSBYS ARE POSSIBLE NEAR ANY TSTMS THAT DVLP THIS AFTN. OTHERWISE VFR CONDITIONS ARE EXPECTED THRU THE PERIOD. 2-4 KFT STRATUS DECK CONTINUES TO SLOWLY RAISE AND DISSIPATE. A QUICK LOOK OUTSIDE THE OFFICE SHOWS IT TRYING TO BECOME CUMULIFORM AT 1730Z. ATTENTION THEN TURNS TO CONVECTION POTENTIAL THIS AFTERNOON. THE BEST CHANCES LOOK TO BE SE OF THE STL METRO AREA AFTER 21Z. APPROACHING UPPER LEVEL ENERGY WILL INTERACT WITH MODEST INSTABILITY TO PRODUCE AT LEAST WIDELY SCATTERED STORMS. THESE SHOULD LAST THUR THE EVENING BUT BE OUT OF THE AREA BY MIDNIGHT. GIVEN COVERAGE AND TIMING ISSUES...HAVE OPTED TO HANDLE THIS CHANCE WITH VCTS AND CB GROUP FOR KUIN AND THE STL METRO SITES. THINK THAT KCOU WILL ESCAPED MOST...IF NOT ALL...OF THE PRECIP. THEREFORE ONLY HAVE VCSH TO COVER CHANCE OF A STRAY SHOWER. THREAT FOR PRECIP ENDS OVERNIGHT. HIGH CLOUDS INCREASE ON MONDAY IN ADVANCE OF NEXT SYSTEM DUE IN MONDAY NIGHT. SPECIFICS FOR KSTL... STRATUS DECK WILL CONTINUE TO RAISE AND BREAK UP. TSTMS SHOULD DVLP JUST SE OF KSTL 21Z- 22Z. REMOVED PROB30 GROUP AND COVERED TSTM CHANCES WITH VCTS AND A CB GROUP AS COVERAGE SHOULD BE FAIRLY LIMITED. CONTINUED VCTS/CB THRU 6Z AS PRECIP CHANCES SHOULD END OVERNIGHT. MILLER && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
Hazardous weather outlook, Oct 24, 3:17 PM CDT, 4 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 317 PM CDT SUN OCT 24 2010 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-251245- 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 MO- LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- 317 PM CDT SUN OCT 24 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE AREA TONIGHT. A FEW OF THE STORMS COULD PRODUCE DAMAGING WINDS GUSTS AND LARGE HAIL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A LINE OF THUNDERSTORMS IS EXPECTED TO DEVELOP ALONG A COLD FRONT AND MOVE QUICKLY ACROSS THE REGION ON MONDAY NIGHT INTO TUESDAY. A FEW OF THE STORMS WITHIN THE LINE MAY BE SEVERE...ESPECIALLY ACROSS NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. SOUTHWEST WINDS ARE EXPECTED TO GUST UP TO 35 MPH ON TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE TONIGHT. KANOFSKY
In the hours before
Local storm report, Oct 24, 6:39 PM CDT, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
639 PM CDT SUN OCT 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0638 PM HAIL FLORISSANT 38.80N 90.32W
10/24/2010 M0.70 INCH ST. LOUIS MO TRAINED SPOTTER
PEA TO DIME SIZE HAIL
&&
KANOFSKYLocal storm report, Oct 24, 6:41 PM CDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
641 PM CDT SUN OCT 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0639 PM HAIL HAZELWOOD 38.78N 90.36W
10/24/2010 E0.50 INCH ST. LOUIS MO TRAINED SPOTTER
MOSTLY PEA SIZED HAIL...WITH SOME LARGER.
&&
JPLocal storm report, Oct 24, 6:50 PM CDT, 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
650 PM CDT SUN OCT 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0649 PM HAIL 3 W FLORISSANT 38.80N 90.38W
10/24/2010 E0.50 INCH ST. LOUIS MO TRAINED SPOTTER
&&
KANOFSKYSpecial weather statement, Oct 24, 6:53 PM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 653 PM CDT SUN OCT 24 2010 MOZ063>065-250045- JEFFERSON MO-ST. LOUIS MO-ST. LOUIS CITY MO- 653 PM CDT SUN OCT 24 2010 ...SIGNIFICANT WEATHER ADVISORY FOR ST. LOUIS...ST. LOUIS CITY AND NORTHERN JEFFERSON COUNTIES UNTIL 745 PM CDT... AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR BYRNES MILL...MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... EUREKA... BYRNES MILL... HIGH RIDGE... MURPHY... BALLWIN... VALLEY PARK... MANCHESTER... FENTON... SUNSET HILLS... TOWN AND COUNTRY... DES PERES... KIRKWOOD... CRESTWOOD... MEHLVILLE... OAKLAND... LAKESHIRE... GLENDALE... FRONTENAC... WARSON WOODS... CREVE COEUR... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. CARNEY
Local storm report, Oct 24, 7:00 PM CDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
700 PM CDT SUN OCT 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 PM HAIL FLORISSANT 38.80N 90.32W
10/24/2010 E0.75 INCH ST. LOUIS MO TRAINED SPOTTER
&&
JPLocal storm report, Oct 24, 7:18 PM CDT, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
718 PM CDT SUN OCT 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0704 PM HAIL VALLEY PARK 38.55N 90.48W
10/24/2010 E0.25 INCH ST. LOUIS MO TRAINED SPOTTER
&&
JPThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 24, 8:22 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 38 min |
| Oct 24, 8:44 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 46 min |
| Oct 24, 9:31 PM CDT | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 3 hr |
| Oct 24, 10:30 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 19 min |
| Oct 25, 3:22 PM CDT | Wind Advisory | LSX | Knox, Lewis, Lincoln, Marion, Monroe, Pike and 2 more | 26 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2010Every severe thunderstorm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.