Alert archive / Illinois / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 1
The Storm Prediction Center issued this severe thunderstorm watch at Jan 4, 1997, 3:30 PM CST for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 4, 1997, 3:30 PM CST (21:30 UTC)
- Expired
- Jan 4, 1997, 9:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 58 counties
Alexander County, IL, Bond County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Shelby County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Vigo County, IN, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 94 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.
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 4:40 PM CST | Severe Thunderstorm Warning | LSX | Iron, Madison | 50 min |
| Jan 4, 4:42 PM CST | Severe Thunderstorm Warning | PAH | Wayne | 48 min |
| Jan 4, 4:53 PM CST | Severe Thunderstorm Warning | PAH | Perry | 37 min |
| Jan 4, 5:26 PM CST | Severe Thunderstorm Warning | PAH | Bollinger, Cape Girardeau | 34 min |
| Jan 4, 5:48 PM CST | Severe Thunderstorm Warning | PAH | Union | 42 min |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.5 hours before the alert went out and 279 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
- 76 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 336 m²/s²
- 0-3 km storm-relative helicity
- 361 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 4:15 PM CST | Tornado Watch | SPC | Dunklin, Pemiscot | 5 hr |
Nearby
Severe Thunderstorm Watches in Illinois, 1997Severe Thunderstorm Watches in Missouri, 1997Severe Thunderstorm Watches in Kentucky, 1997Every severe thunderstorm watch 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.