Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 170, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 23, 1998, 7:47 PM CDT for Clark County, Missouri. It was in force for 48 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 23, 1998, 7:47 PM CDT (00:47 UTC)
- Expired
- May 23, 1998, 8:35 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Clark County, MO
The radar
The Quad Cities radar (KDVN), 165 km from the middle of the area, began a volume at 00:48 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
Davenport, (KDVN), launched 00:00Z, 0.8 hours before the alert went out and 170 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1302 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -114 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
360 WUUS1 KSTL 240048 RRA SVRSTL MOC045-240135- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 747 PM CDT SAT MAY 23 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CLARK COUNTY IN NORTHEASTERN MISSOURI * UNTIL 835 PM CDT * AT 747 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 TO 5 MILES SOUTH OF KAHOKA... MOVING NORTHEAST AT 25 TO 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... KAHOKA PEAKSVILLE THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING HAIL. LARGE HAIL CAN CAUSE EXTENSIVE PROPERTY DAMAGE AN SERIOUS INJURY TO PEOPLE CAUGHT OUTDOORS. MOVE INSIDE A STURDY BUILDING IMMEDIATELY. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. GKS/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.
In the hours before
Special weather statement, May 23, 7:34 PM CDT, 13 minutes before
ILZ064-065-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084- 085-099-240230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 734 PM CDT SAT MAY 23 1998 ...SEVERE THUNDERSTORM WATCH 401 HAS BEEN CANCELLED FOR ALL MISSOURI COUNTIES AND RANDOLPH..MONROE..ST. CLAIR..AND MADISON COUNTIES IN ILLINOIS. IT REMAINS IN EFFECT FOR BOND..FAYETTE..MARION..CLINTON..AND WASHINGTON COUNTIES IN SOUTHWEST ILLLINOIS UNTIL 900 PM CDT. THE SEVERE THUNDERSTORM WATCH CANCELLATION MEANS THERE IS NO WATCH IN EFFECT FOR THE ST LOUIS METROPOLITAN AREA. ADDITIONAL THUNDERSTORMS COULD STILL OCCUR LATER TONIGHT. KEEP ABREAST OF LATEST INFORMATION AND POSSIBLE STATEMENTS OR WARNINGS FROM THE NATIONAL WEATHER SERVICE. PEDIGO
Special weather statement, May 23, 7:34 PM CDT, 13 minutes before
ILZ064-065-069-070-074-079-100>102-MOZ047>049-059>065-072>075-084- 085-099-240230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 734 PM CDT SAT MAY 23 1998 ...SEVERE THUNDERSTORM WATCH 401 HAS BEEN CANCELLED FOR ALL MISSOURI COUNTIES AND RANDOLPH..MONROE..ST. CLAIR..AND MADISON COUNTIES IN ILLINOIS. IT REMAINS IN EFFECT FOR BOND..FAYETTE..MARION..CLINTON..AND WASHINGTON COUNTIES IN SOUTHWEST ILLLINOIS UNTIL 900 PM CDT. THE SEVERE THUNDERSTORM WATCH CANCELLATION MEANS THERE IS NO WATCH IN EFFECT FOR THE ST LOUIS METROPOLITAN AREA. ADDITIONAL THUNDERSTORMS COULD STILL OCCUR LATER TONIGHT. KEEP ABREAST OF LATEST INFORMATION AND POSSIBLE STATEMENTS OR WARNINGS FROM THE NATIONAL WEATHER SERVICE. PEDIGO
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 7:32 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 48 min |
| May 23, 11:49 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 46 min |
| May 24, 12:05 AM CDT | Severe Thunderstorm Warning | LSX | Lewis | 50 min |
| May 24, 12:21 AM CDT | Severe Thunderstorm Warning | LSX | Ralls | 64 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1998Every severe thunderstorm warning in 1998
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.