Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 57, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 15, 1998, 7:35 PM CDT for Adams County, Illinois. It was in force for 65 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 15, 1998, 7:35 PM CDT (00:35 UTC)
- Expired
- Apr 15, 1998, 8:40 PM CDT
- In force
- 65 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Adams County, IL
The radar
The St Louis radar (KLSX), 150 km from the middle of the area, began a volume at 00:37 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 |
|---|---|---|---|
| Apr 15, 7:35 PM CDT | Hail 1.75 | Quincy, IL | Hail up to golfball size fell in Quincy. |
| Apr 15, 7:40 PM CDT | Hail 0.75 | Quincy, IL | 3/4 inch hail was reported northeast of Quincy. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.6 hours before the alert went out and 190 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
- 259 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 532 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
261 WUUS1 KSTL 160034 RRA SVRSTL ILC001-160140- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 735 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ADAMS COUNTY IN WEST CENTRAL ILLINOIS * UNTIL 840 PM CDT * AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST SOUTHWEST OF QUINCY IL... MOVING NORTHEAST AT 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... QUINCY MENDON THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL... AND DEADLY LIGHTNING. STAY INDOORS AWAY FROM WINDOWS. PEDIGO
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, 4 hours 40 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, 4 hours 40 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, 37 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, 37 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, 7:51 PM CDT | Tornado Warning | LSX | Marion | 49 min |
| Apr 15, 7:57 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.