Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 58, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 15, 1998, 7:57 PM CDT for Washington County, Illinois. 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
- Apr 15, 1998, 7:57 PM CDT (00:57 UTC)
- Expired
- Apr 15, 1998, 8:45 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Washington County, IL
The radar
The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 01:01 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 15, 4:30 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.0 hours before the alert went out and 212 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
- 426 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
370 WUUS1 KSTL 160058 RRA SVRSTL ILC189-160145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 757 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN WASHINGTON COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS * UNTIL 845 PM CDT * AT 755 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF NASHVILLE... MOVING EAST AT 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... NASHVILLE RICHVIEW ASHLEY THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL... AND DEADLY LIGHTNING. STAY INDOORS AWAY FROM WINDOWS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. METZE/GLASS
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, Apr 15, 2:55 PM CDT, 5 hours 2 minutes before
MOZ049-059-062-065-072>074-084-099-152155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 255 PM CDT WED APR 15 1998 ...TORNADO WATCH NUMBER 214 REMAINS IN EFFECT UNTIL 700 PM CDT... THE TORNADO WATCH ISSUED FOR MUCH OF CENTRAL AND SOUTHERN MISSOURI REMAINS IN EFFECT. ONLY ONE WARNING IS IN EFFECT...FOR SOUTHEAST COLE AND SOUTHERN OSAGE COUNTY...HOWEVER CONDITIONS REMAIN VERY FAVORABLE FOR ADDITIONAL SEVERE WEATHER THIS AFTERNOON AND EVENING ACROSS THE AREA. THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING A HIGH RISK FOR SEVERE WEATHER ACROSS A GOOD PORTION OF SOUTHERN MISSOURI THIS AFTERNOON AND TONIGHT. THOUGH THERE IS NO IMMEDIATE THREAT FOR SEVERE STORMS...THE POTENTIAL REMAINS VERY HIGH...KEEP ABREAST OF LATEST STATEMENTS FROM THE NATIONAL WEATHER SERVICE AND LISTEN FOR POSSIBLE WARNINGS LATER ON... THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. REVIEW SEVERE WEATHER SAFETY RULES...AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR LATEST WARNINGS AND STATEMENTS. PEDIGO
Special weather statement, Apr 15, 2:55 PM CDT, 5 hours 2 minutes before
MOZ049-059-062-065-072>074-084-099-152155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 255 PM CDT WED APR 15 1998 ...TORNADO WATCH NUMBER 214 REMAINS IN EFFECT UNTIL 700 PM CDT... THE TORNADO WATCH ISSUED FOR MUCH OF CENTRAL AND SOUTHERN MISSOURI REMAINS IN EFFECT. ONLY ONE WARNING IS IN EFFECT...FOR SOUTHEAST COLE AND SOUTHERN OSAGE COUNTY...HOWEVER CONDITIONS REMAIN VERY FAVORABLE FOR ADDITIONAL SEVERE WEATHER THIS AFTERNOON AND EVENING ACROSS THE AREA. THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING A HIGH RISK FOR SEVERE WEATHER ACROSS A GOOD PORTION OF SOUTHERN MISSOURI THIS AFTERNOON AND TONIGHT. THOUGH THERE IS NO IMMEDIATE THREAT FOR SEVERE STORMS...THE POTENTIAL REMAINS VERY HIGH...KEEP ABREAST OF LATEST STATEMENTS FROM THE NATIONAL WEATHER SERVICE AND LISTEN FOR POSSIBLE WARNINGS LATER ON... THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. REVIEW SEVERE WEATHER SAFETY RULES...AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR LATEST WARNINGS AND STATEMENTS. PEDIGO
Special weather statement, Apr 15, 6:58 PM CDT, 59 minutes before
MOZ041-047>051-059>065-072>074-084-099-160100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 658 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PARTS OF CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11PM. THIS WATCH REPLACES WATCH 214 THAT WAS IN EFFECT UNTIL 7PM. AMS
Special weather statement, Apr 15, 6:58 PM CDT, 59 minutes before
MOZ041-047>051-059>065-072>074-084-099-160100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 658 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PARTS OF CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11PM. THIS WATCH REPLACES WATCH 214 THAT WAS IN EFFECT UNTIL 7PM. AMS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:00 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 65 min |
| Apr 15, 7:35 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 65 min |
| Apr 15, 7:51 PM CDT | Tornado Warning | LSX | Marion | 49 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 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.