Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 285, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 29, 1998, 4:30 PM CDT for Adams County, Brown 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
- Jun 29, 1998, 4:30 PM CDT (21:30 UTC)
- Expired
- Jun 29, 1998, 5:35 PM CDT
- In force
- 65 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Adams County, IL, Brown County, IL
The radar
The Lincoln radar (KILX), 140 km from the middle of the area, began a volume at 21:32 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 |
|---|---|---|---|
| Jun 29, 4:40 PM CDT | Thunderstorm Wind 54 | Mt Sterling, IL | |
| Jun 29, 4:45 PM CDT | Thunderstorm Wind 55 | Quincy, IL |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 29, 3:15 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 29, 4:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.5 hours before the alert went out and 187 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
- 917 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 762 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
182 WUUS1 KSTL 292131 RRA SVRSTL ILC001-009-MOC045-103-111-199-292235- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 430 PM CDT MON JUN 29 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ADAMS COUNTY IN WEST CENTRAL ILLINOIS BROWN COUNTY IN WEST CENTRAL ILLINOIS CLARK COUNTY IN NORTHEASTERN MISSOURI KNOX COUNTY IN NORTHEASTERN MISSOURI LEWIS COUNTY IN NORTHEASTERN MISSOURI SCOTLAND COUNTY IN NORTHEASTERN MISSOURI * UNTIL 535 PM CDT * AT 428 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 30 MILES NORTHEAST OF QUNICY TO 10 MILES WEST OF SCOTLAND... MOVING SOUTHEAST AT 30 TO 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... BIBLE GROVE AT 430 PM CDT ST PATRICK AT 435 PM CDT MONTICELLO AT 445 PM CDT LIMA ATA 440 PM CDT DAMAGING WINDS WERE REPORTED IN ATHENS IN NORTHEAST CLARK COUNTY THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING WINDS. MOVE QUICKLY TO A STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. RP/VA &
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, Jun 29, 11:10 AM CDT, 5 hours 20 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- MOZ065-292300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1110 AM CDT MON JUN 29 1998 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 THIS AFTERNOON AND TONIGHT OVER MOST OF EASTERN AND CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. VERY MOIST AND UNSTABLE AIR ACROSS THE REGION WILL PROVIDE FUEL FOR THE DEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON INTO THE EVENING HOURS. SOME OF THESE STORMS WILL LIKELY BECOME SEVERE...PRODUCING DAMAGING WINDS...LARGE HAIL...AND HEAVY RAINFALL. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION. GLASS
Special weather statement, Jun 29, 11:10 AM CDT, 5 hours 20 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- MOZ065-292300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1110 AM CDT MON JUN 29 1998 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 THIS AFTERNOON AND TONIGHT OVER MOST OF EASTERN AND CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. VERY MOIST AND UNSTABLE AIR ACROSS THE REGION WILL PROVIDE FUEL FOR THE DEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON INTO THE EVENING HOURS. SOME OF THESE STORMS WILL LIKELY BECOME SEVERE...PRODUCING DAMAGING WINDS...LARGE HAIL...AND HEAVY RAINFALL. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION. GLASS
Special weather statement, Jun 29, 3:42 PM CDT, 48 minutes before
ILZ064-069-070-074-079-100>102-MOZ061-063>065-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 342 PM CDT MON JUN 29 1998 ...HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS HAS EXPIRED... A COLD FRONT ACROSS THE UPPER MIDWEST WILL MOVE SOUTHWARD THROUGH MISSOURI LATE TONIGHT AND TUESDAY. YOU CAN EXPECT SHOWERS AND THUNDERSTORMS WITH THIS FRONT AS IT PASSES THROUGH THE AREA OVER THE NEXT 24 HOURS. IN TURN...A RELATIVELY COOLER AND LESS HUMID AIR MASS WILL SETTLE OVER THE AREA LATE TUESDAY THROUGH WEDNESDAY. THUS...THE HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...INCLUDING THE ST LOUIS METROPOLITAN AREA...WILL BE ALLOWED TO EXPIRE. METZE
Special weather statement, Jun 29, 3:42 PM CDT, 48 minutes before
ILZ064-069-070-074-079-100>102-MOZ061-063>065-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 342 PM CDT MON JUN 29 1998 ...HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS HAS EXPIRED... A COLD FRONT ACROSS THE UPPER MIDWEST WILL MOVE SOUTHWARD THROUGH MISSOURI LATE TONIGHT AND TUESDAY. YOU CAN EXPECT SHOWERS AND THUNDERSTORMS WITH THIS FRONT AS IT PASSES THROUGH THE AREA OVER THE NEXT 24 HOURS. IN TURN...A RELATIVELY COOLER AND LESS HUMID AIR MASS WILL SETTLE OVER THE AREA LATE TUESDAY THROUGH WEDNESDAY. THUS...THE HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...INCLUDING THE ST LOUIS METROPOLITAN AREA...WILL BE ALLOWED TO EXPIRE. METZE
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 7:51 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 34 min |
| Jun 28, 8:59 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 36 min |
| Jun 29, 12:05 AM CDT | Flash Flood Warning | LSX | Adams | 4 hr |
| Jun 29, 12:05 AM CDT | Flash Flood Warning | LSX | Brown | 4 hr |
| Jun 29, 4:51 PM CDT | Flash Flood Warning | LSX | Adams, Brown | 3 hr |
| Jun 29, 5:04 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 61 min |
| Jun 29, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin, Montgomery | 63 min |
| Jun 29, 6:19 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 46 min |
| Jun 29, 6:29 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 61 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.