Alert archive / Illinois / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 88, NWS St. Louis, MO

May 26, 2004Madison County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 26, 2004, 4:17 PM CDT for Madison County, Illinois. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 26, 2004, 4:17 PM CDT (21:17 UTC)
Expired: May 26, 2004, 5:00 PM CDT
In force: 43 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Madison County, IL

The radar

The St Louis radar (KLSX), 63 km from the middle of the area, began a volume at 21:18 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.

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

Lincoln, IL (KILX), launched 12:00Z, 9.3 hours before the alert went out and 188 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1078 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

750 
WUUS53 KLSX 262117
SVRLSX
ILC119-262200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
416 PM CDT WED MAY 26 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MADISON COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 500 PM CDT

* AT 416 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER GRANITE CITY...MOVING EAST AT 45 MPH.     
  STORM SPOTTERS REPORTED NICKLE SIZE HAIL IN HARVESTER. 

* LOCATIONS IMPACTED INCLUDE...
  MARYVILLE
  EDWARDSVILLE
  GLEN CARBON
  TROY
  CARPENTER
  MARINE
  ALHAMBRA

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING LARGE DESTRUCTIVE
HAIL. CONSIDERABLE DAMAGE IS POSSIBLE. STAY INSIDE...AND AVOID
OUTSIDE WALLS AND WINDOWS

LAT...LON 3892 9022 3867 9020 3869 8962 3901 8966

$$
RP

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 May 26, 2:09 PM CDT, 2 hours 8 minutes earlier.

Area forecast discussion, May 26, 2:09 PM CDT, 2 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
209 PM CDT WED MAY 26 2004

.DISCUSSION...

BOUNDARY ACROSS SOUTHERN MISSOURI AND ILLINOIS SLOWLY LIFTING
NORTHWARD AS A WARM FRONT IN RESPONSE TO LOW LEVEL WARM ADVECTION
AHEAD OF LOW PRESSURE CURRENTLY CENTERED IN TEXAS/OKLAHOMA
PANHANDLE. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE TO
DEVELOP AND TRAIN ALONG AND NORTH OF FRONTAL BOUNDARY
TONIGHT...THEREFORE FLOOD WATCH WILL REMAIN IN EFFECT GIVEN SLOW
MOVEMENT OF FRONT AND SATURATED SOIL.

WEAK COLD FRONT EXPECTED TO MOVE ACROSS BISTATE REGION ON THURSDAY.
GIVEN ADEQUATE INSTABILITY WILL LIKELY SEE ANOTHER ROUND OF
THUNDERSTORMS. ENTIRE AREA OUTLOOKED FOR SLIGHT RISK OF SEVERE
THUNDERSTORMS...WITH POTENTIAL OF LARGE HAIL AND SEVERE WIND.

TRANQUIL WEATHER EXPECTED OVERNIGHT THURSDAY AND FRIDAY BEFORE WARM
AIR ADVECTION TAKES OVER ONCE AGAIN FRIDAY NIGHT...POSSIBLY BRINGING
ANOTHER SHOT OF SHOWERS AND ELEVATED THUNDERSTORMS.

EXTENDED...GFS AND ECMWF SIMILAR IN DIGGING A CLOSED LOW INTO THE
CENTRAL ROCKIES LATE THIS WEEKEND...LEADING TO CYCLONGENESIS OVER
THE CENTRAL PLAINS. FRONTAL BOUNDARY WILL LIFT NORTH DURING THE
HOLIDAY WEEKEND...BRINGING WARMER TEMPERATURES TO THE BISTATE.
PRECIPITATION CHANCES/THUNDER WILL INCREASE TOWARD
SUNDAY/MONDAY...WHEN MAIN UPPER LEVEL DISTURBANCE EJECTS OUT OF
CENTRAL PLAINS INTO MID MISSISSIPPI RIVER VALLEY. UPPER LOW MEANDERS
ACROSS NORTHERN PLAINS FOR THE REMAINDER OF THE EXTENDED...SPELLING
COOLER TEMPS AND DRIER TIMES FOR THE BISTATE.

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
.MO...FLOOD WATCH TONIGHT FROM AUDRAIN AND PIKE COUNTIES SWD.
.IL...FLOOD WATCH TONIGHT FROM CALHOUN AND GREENE COUNTIES SWD AND
EWD.

CVKING

EFFECTIVE 7 AM JUNE 8 2004...THE AWIPS PRODUCT IDENTIFIER FOR THIS
PRODUCT WILL CHANGE FROM AFDSTL TO AFDLSX.  THE WMO HEADER WILL
REMAIN UNCHANGED. PLEASE ENSURE THAT ANY NEEDED CHANGES ARE
COMPLETED BY JUNE 8 2004.

Hazardous weather outlook, May 26, 11:51 AM CDT, 4 hours 26 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE ST LOUIS MO
1151 AM CDT WED MAY 26 2004

ILZ095>097-MOZ018-019-026-027-034-035-271100-
ADAMS IL-BROWN-KNOX-LEWIS-MARION-MONROE-PIKE IL-RALLS-SHELBY-
1151 AM CDT WED MAY 26 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MISSOURI AND PART
OF CENTRAL MISSOURI...AS WELL AS WEST CENTRAL ILLINOIS AND A PART
OF SOUTHWEST ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS THIS AFTERNOON AND TONIGHT.
SOME STORMS MAY PRODUCE HEAVY RAINFALL...AND POSSIBLY A BRIEF PERIOD
OF PEA SIZE HAIL AND STRONG GUSTY WINDS...PARTICULARLY DURING
THE EVENING HOURS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THURSDAY AFTERNOON
INTO THURSDAY EVENING AS A COLD FRONT MOVES SOUTHEAST THROUGH THE
REGION.  THUNDERSTORMS WILL DEVELOP ALONG THIS FRONT...A FEW MAY
BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WINDS.

THE CHANCE OF THUNDERSTORMS WILL RESUME FRIDAY NIGHT AND CONTINUE
THROUGH MEMORIAL DAY WITH A GOOD CHANCE THAT SOME OF THESE STORMS
WILL BE SEVERE. DUE TO THE SERIOUS NATURE OF THE WEATHER CONDITIONS
AND THE FACT THAT MANY PEOPLE HAVE RECREATIONAL INTERESTS FOR THE
WEEKEND...YOU SHOULD KEEP ABREAST WITH LATEST FORECASTS AND
OTHER PRODUCTS ISSUED FROM THE NATIONAL WEATHER SERVICE THIS
WEEKEND.  A WEATHER RADIO OR INTERNET ACCESS IS RECOMMENDED

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION COULD BE WARRANTED FOR SIGNIFICANT RAINFALL
THIS EVENING AND OVERNIGHT.

ILZ058>060-064-065-069-070-074-079-098>102-MOZ036-041-042-047>052-
059>065-072>075-084-085-099-271100-
AUDRAIN-BOND IL-BOONE-CALHOUN IL-CALLAWAY-CLINTON IL-COLE-CRAWFORD-
FAYETTE IL-FRANKLIN-GASCONADE-GREENE IL-IRON-JEFFERSON-JERSEY IL-
LINCOLN-MACOUPIN IL-MADISON-MADISON IL-MARION IL-MONITEAU-MONROE IL-
MONTGOMERY-MONTGOMERY IL-OSAGE-PIKE-RANDOLPH IL-REYNOLDS-ST CHARLES-
ST CLAIR IL-ST FRANCOIS-ST LOUIS-ST LOUIS CITY-STE GENEVIEVE-WARREN-
WASHINGTON-WASHINGTON IL-
1151 AM CDT WED MAY 26 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MISSOURI AND A PART
OF CENTRAL MISSOURI...AS WELL AS A PORTION OF SOUTHWEST ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND THIS EVENING.  THUNDERSTORMS ARE EXPECTED TO INCREASE
THROUGH THE AFTERNOON AND EVENING IN HUMID AND UNSTABLE ATMOSPHERE
NORTH OF A STATIONARY FRONT ACROSS CENTRAL AND SOUTHERN MISSOURI.  A
FEW OF THESE STORMS MAY BECOME SEVERE...PRODUCING LARGE HAIL AND
DAMAGING WINDS. IN ADDITION CONDITIONS ARE SUCH THAT VERY HEAVY
RAINS COULD OCCUR AS WELL.  A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR MOST OF THE AREA THROUGH 200 PM THIS AFTERNOON.
A FLOOD WATCH IS ALSO IN EFFECT FOR THIS AFTERNOON THROUGH
EARLY THURSDAY.  SEVERAL AREAS RECEIVED 1 TO 3 INCHES OF RAIN
IN THE PAST 24 HOURS AND THE EAST TO WEST ORIENTATION OF STORMS
THAT MOVE THROUGH THE AREA THIS AFTERNOON AND TONIGHT WILL
BRING ABOUT A SUBSTANTIAL THREAT FOR COPIOUS RAINS AND FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THURSDAY AFTERNOON
INTO THURSDAY EVENING AS A COLD FRONT MOVES SOUTHEAST THROUGH THE
REGION.  THUNDERSTORMS WILL DEVELOP ALONG THIS FRONT...A FEW MAY
BECOME SEVERE...PRODUCING LARGE HAIL AND DAMAGING WINDS. HEAVY
RAIN COULD ALSO BE A THREAT.

THE CHANCE OF THUNDERSTORMS WILL CONTINUE FRIDAY THROUGH MEMORIAL
DAY. SOME OF THESE STORMS WILL ALSO LIKELY BE SEVERE...PARTICULARLY
SUNDAY AND SUNDAY NIGHT.  IF YOU ARE GOING TO BE OUTSIDE DURING
THE WEEKEND...THE SERIOUS NATURE OF THIS WEATHER PATTERN SHOULD
MAKE IT IMPERATIVE TO KEEP ABREAST OF LOCAL WEATHER CONDITIONS AND
POSSIBLE STATEMENTS OR WARNINGS FOR YOUR AREA. A WEATHER RADIO
OR INTERNET ACCESS TO THE NATIONAL WEATHER SERVICE IS RECOMMENDED.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL BE NECESSARY THIS AFTERNOON AND TONIGHT
DUE TO SEVERE STORMS AND THE POSSIBILITY OF FLASH FLOODING AS
WELL.

PEDIGO

In the hours before

Local storm report, May 26, 2:01 PM CDT, 2 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
201 PM CDT WED MAY 26 2004

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

0151 PM     HAIL             RUMA                    38.13N 90.00W
05/26/2004  1.00 INCH        RANDOLPH           IL   TRAINED SPOTTER

&&

CVKING

Local storm report, May 26, 2:01 PM CDT, 2 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
201 PM CDT WED MAY 26 2004

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

0151 PM     HAIL             RUMA                    38.13N 90.00W
05/26/2004  1.00 INCH        RANDOLPH           IL   TRAINED SPOTTER

&&

CVKING

Local storm report, May 26, 2:08 PM CDT, 2 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
208 PM CDT WED MAY 26 2004

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

0152 PM     HAIL             EVANSVILLE              38.09N 89.93W
05/26/2004  1.75 INCH        RANDOLPH           IL   TRAINED SPOTTER

            QUARTER TO GOLF BALL SIZED HAIL

0202 PM     HAIL             6 SE STEELEVILLE        37.95N 89.58W
05/26/2004  0.88 INCH        JACKSON            IL   NWS EMPLOYEE

&&

PERLOW

Local storm report, May 26, 2:08 PM CDT, 2 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
208 PM CDT WED MAY 26 2004

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

0152 PM     HAIL             EVANSVILLE              38.09N 89.93W
05/26/2004  1.75 INCH        RANDOLPH           IL   TRAINED SPOTTER

            QUARTER TO GOLF BALL SIZED HAIL

0202 PM     HAIL             6 SE STEELEVILLE        37.95N 89.58W
05/26/2004  0.88 INCH        JACKSON            IL   NWS EMPLOYEE

&&

PERLOW

Local storm report, May 26, 2:32 PM CDT, 1 hour 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
232 PM CDT WED MAY 26 2004

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

0217 PM     HAIL             RENAULT                 38.15N 90.13W
05/26/2004  0.75 INCH        MONROE             IL   PUBLIC

            HAIL COVERED THE GROUND

&&

PERLOW

Local storm report, May 26, 2:32 PM CDT, 1 hour 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
232 PM CDT WED MAY 26 2004

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

0217 PM     HAIL             RENAULT                 38.15N 90.13W
05/26/2004  0.75 INCH        MONROE             IL   PUBLIC

            HAIL COVERED THE GROUND

&&

PERLOW

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 8:13 AM CDT	Severe Thunderstorm Warning	LSX	Calhoun	32 min
May 26, 8:20 AM CDT	Severe Thunderstorm Warning	LSX	Jersey	40 min
May 26, 8:39 AM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Madison	51 min
May 26, 8:51 AM CDT	Severe Thunderstorm Warning	LSX	Monroe	39 min
May 26, 8:56 AM CDT	Severe Thunderstorm Warning	LSX	Saint Clair, Washington	49 min
May 26, 1:10 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph	50 min
May 26, 4:59 PM CDT	Severe Thunderstorm Warning	LSX	Bond	46 min
May 26, 5:47 PM CDT	Severe Thunderstorm Warning	LSX	Marion	28 min
May 26, 6:04 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin	41 min
May 26, 6:19 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	26 min
May 26, 6:21 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	54 min
May 26, 6:40 PM CDT	Severe Thunderstorm Warning	LSX	Madison	50 min
May 26, 6:43 PM CDT	Severe Thunderstorm Warning	LSX	Madison	62 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2004 Every severe thunderstorm warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.