Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 44, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 2, 1997, 1:06 PM CDT for Madison County, Missouri. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 2, 1997, 1:06 PM CDT (18:06 UTC)
- Expired
- May 2, 1997, 1:45 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Madison County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 18:05 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.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 6.1 hours before the alert went out and 297 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
- 496 J/kg
- Mixed-layer CIN
- -404 J/kg
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 534 m²/s²
- 0-3 km storm-relative helicity
- 701 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 021806 RRA SVRSTL MOC123-021845- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 106 PM CDT FRI MAY 2 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 145 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST MISSOURI ...MADISON COUNTY TOWNS IN THE PATH INCLUDE FREDERICKTOWN AND MARQUAND. AT 105 PM RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 5 MILES SOUTH OF FREDERICKTOWN MOVING NORTHEAST AT 60 MPH. THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS. JPK
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.
In the hours before
Special weather statement, May 2, 7:15 AM CDT, 5 hours 51 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-021600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 615 AM CST FRI MAY 2 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS CENTRAL...NORTHEAST...AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS...THIS AFTERNOON AND EARLY TONIGHT. A STRONG LOW PRESSURE SYSTEM WILL BE MOVING FROM EASTERN KANSAS INTO NORTHERN MISSOURI TODAY. SHOWERS AND THUNDERSTORMS IN ADVANCE OF THIS SYSTEM WILL BLANKET THE AREA THIS MORNING...AND ALTHOUGH SOME OF THESE STORMS MAY PRODUCE BRIEF HEAVY RAINS THEY ARE NOT EXPECTED TO BE SEVERE. THE GREATEST THREAT LARGE HAIL AND DAMAGING WINDS WILL BE THIS AFTERNOON AND EARLY THIS EVENING...AS THE WARM AND MOIST AIR MOVING INTO THE REGION BECOMES UNSTABLE BY THE HEAT OF THE DAY. THIS DESTABILIZATION...COMBINED WITH THE APPROACH OF A VIGOROUS UPPER LEVEL SYSTEM...COULD LEAD TO THE DEVELOPMENT OF SEVERE THUNDERSTORMS. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD MONITOR LATER FORECASTS AND STATEMENTS FOR POSSIBLE SKYWARN ACTION. TRUETT
Special weather statement, May 2, 10:58 AM CDT, 2 hours 8 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-021600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CST FRI MAY 2 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS OVER SOUTHERN PORTIONS OF THE NWS ST LOUIS WARNING AREA...GENERALLY SOUTH OF A LINE FROM SALEM MISSOURI TO POTOSI TO BELLEVILLE TO VANDALIA ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS COVERING THE REMAINDER OF THE NWS ST LOUIS WARNING AREA OVER CENTRAL... NORTHEAST...AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. A STRONG LOW PRESSURE SYSTEM WILL MOVE FROM NORTHWEST MISSOURI INTO NORTHERN ILLINOIS BY MID-EVENING...PUSHING A COLD FRONT ACROSS THE AREA. GUSTY SOUTHERLY WINDS WILL CONTINUE TO DRAW WARM MOIST AIR NORTHWARD IN ADVANCE OF THIS LOW PRESSURE AREA. THE COMBINATION OF AFTERNOON HEATING...AND COOL DRY AIR ALOFT ASSOCIATED WITH THE APPROACH OF A VIGOROUS UPPER LEVEL SYSTEM...WILL RESULT IN MODERATELY UNSTABLE CONDITIONS BY MID TO LATE AFTERNOON OVER MUCH OF MISSOURI AND PORTIONS OF SOUTHWEST ILLINOIS. THUNDERSTORMS ARE EXPECTED TO THEN REDEVELOP THIS AFTERNOON AS THE COLD FRONT INTERACTS WITH THIS UNSTABLE AIR MASS. THE GREATEST SEVERE WEATHER THREAT WILL BE LARGE HAIL AND DAMAGING WINDS...HOWEVER OVER SOUTHERN SECTIONS OF THE AREA...THE WIND PROFILE AND SHEAR WILL BE ALSO BE SUPPORTIVE OF POSSIBLE TORNADOES. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD MONITOR LATER FORECASTS AND STATEMENTS AND BE PREPARED FOR SKYWARN ACTION THIS AFTERNOON AND EVENING. GLASS
Special weather statement, May 2, 12:00 PM CDT, 1 hour 6 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-021600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CST FRI MAY 2 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS OVER SOUTHERN PORTIONS OF THE NWS ST LOUIS WARNING AREA...GENERALLY SOUTH OF A LINE FROM SALEM MISSOURI TO POTOSI TO BELLEVILLE TO VANDALIA ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS COVERING THE REMAINDER OF THE NWS ST LOUIS WARNING AREA OVER CENTRAL... NORTHEAST...AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. A STRONG LOW PRESSURE SYSTEM WILL MOVE FROM NORTHWEST MISSOURI INTO NORTHERN ILLINOIS BY MID-EVENING...PUSHING A COLD FRONT ACROSS THE AREA. GUSTY SOUTHERLY WINDS WILL CONTINUE TO DRAW WARM MOIST AIR NORTHWARD IN ADVANCE OF THIS LOW PRESSURE AREA. THE COMBINATION OF AFTERNOON HEATING...AND COOL DRY AIR ALOFT ASSOCIATED WITH THE APPROACH OF A VIGOROUS UPPER LEVEL SYSTEM...WILL RESULT IN MODERATELY UNSTABLE CONDITIONS BY MID TO LATE AFTERNOON OVER MUCH OF MISSOURI AND PORTIONS OF SOUTHWEST ILLINOIS. THUNDERSTORMS ARE EXPECTED TO THEN REDEVELOP THIS AFTERNOON AS THE COLD FRONT INTERACTS WITH THIS UNSTABLE AIR MASS. THE GREATEST SEVERE WEATHER THREAT WILL BE LARGE HAIL AND DAMAGING WINDS...HOWEVER OVER SOUTHERN SECTIONS OF THE AREA...THE WIND PROFILE AND SHEAR WILL BE ALSO BE SUPPORTIVE OF POSSIBLE TORNADOES. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD MONITOR LATER FORECASTS AND STATEMENTS AND BE PREPARED FOR SKYWARN ACTION THIS AFTERNOON AND EVENING. GLASS
Nearby
Severe Thunderstorm Warnings in Missouri, 1997Every severe thunderstorm warning in 1997
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.