Alert archive / Illinois / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 76, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Oct 29, 1996, 1:56 PM CST for Jo Daviess County, Illinois. It was in force for 49 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
- Oct 29, 1996, 1:56 PM CST (19:56 UTC)
- Expired
- Oct 29, 1996, 2:45 PM CST
- In force
- 49 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Jo Daviess County, IL
The radar
The Quad Cities radar (KDVN), 89 km from the middle of the area, began a volume at 19:56 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
Lincoln, IL (KILX), launched 12:00Z, 7.9 hours before the alert went out and 281 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
- 674 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 29, 9:46 AM CST, 4 hours 10 minutes earlier.
Area forecast discussion, Oct 29, 9:46 AM CST, 4 hours 10 minutes before
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</html>In the hours before
Special weather statement, Oct 29, 10:16 AM CST, 3 hours 40 minutes before
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002- 007-009-015>018-024>026-034-035-301200- SIGNIFICANT WEATHER OUTLOOK FOR EASTERN IOWA AND NORTHWEST ILLINOIS NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1016 AM CST TUE OCT 29 1996 ...POTENTIALLY DANGEROUS WEATHER SITUATION THIS AFTERNOON AND STRONG WINDS TONIGHT... ACTIVE WEATHER IS EXPECTED ACROSS EASTERN IOWA AND NORTHWEST ILLINOIS THIS AFTERNOON AND TONIGHT. A RAPIDLY DEEPENING LOW PRESSURE SYSTEM WILL MOVE FROM WESTERN NEBRASKA LATE THIS MORNING TO SOUTHWEST MINNESOTA BY EVENING. THIS LOW WILL PUMP GULF MOISTURE... MARKED BY DEWPOINTS AT OR ABOVE 60 DEGREES F... INTO THE AREA. ABOVE THE SURFACE VERY STRONG WINDS AT 850MB /ABOUT 5000FT/ UP TO 60 MPH AND EVEN HIGHER WINDS UP TO 140 MPH IN THE JET STREAM WILL COMBINE TO PRODUCE STRONG SPEED AND DIRECTIONAL SHEAR ACROSS THE AREA. A COLD FRONT OVER CENTRAL NEBRASKA AND KANSAS WILL RACE EAST NORTHEAST... REACHING THE MISSISSIPPI RIVER BY 600 PM. THE COLD FRONT WILL INTERACT WITH THE GULF MOISTURE... VERY STRONG SPEED AND DIRECTIONAL SHEAR AND INSTABILITY TO 1000 J/KG /CAPE/ TO PRODUCE POTENTIALLY VIOLENT DAMAGING THUNDERSTORMS THIS AFTERNOON. THE PRIMARY THREAT WILL BE DAMAGING WIND GUSTS TO 60 MPH OR GREATER. HOWEVER... DUE TO THE FAVORABLE WIND PROFILE... A FEW TORNADOES ARE POSSIBLE. AS FOR TIMING... EASTERN IOWA WILL BE UNDER THE GUN AFTER 100 PM WITH NORTHWEST ILLINOIS UNDER THE THREAT AFTER 300 PM. AFTER THE STORM PASSES TIGHTLY PACKED ISOBARS AROUND THE DEEP LOW PRESSURE SYSTEM WILL USHER IN COLDER AIR FROM THE WEST. THE WIND CREATED BY THE PACKED ISOBARS /GRADIENT WIND/ WILL PRODUCE WIND SPEEDS FROM 20 TO 30 MPH WITH GUSTS TO 45 MPH POSSIBLE IN THE EVENING ACROSS ALL OF EASTERN IOWA AND NORTHWEST ILLINOIS. SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON ACROSS EASTERN IOWA AND NORTHWEST ILLINOIS. THE HAZARD COMMUNITY SHOULD CLOSELY MONITOR LATER FORECASTS AND STATEMENTS CONCERNING THIS POTENTIALLY DANGEROUS WEATHER SITUATION. HENDRICKS/HOLSTEN
Special weather statement, Oct 29, 10:17 AM CST, 3 hours 39 minutes before
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002- 007-009-015>018-024>026-034-035-301200- SIGNIFICANT WEATHER OUTLOOK FOR EASTERN IOWA AND NORTHWEST ILLINOIS NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1016 AM CST TUE OCT 29 1996 ...POTENTIALLY DANGEROUS WEATHER SITUATION THIS AFTERNOON AND STRONG WINDS TONIGHT... ACTIVE WEATHER IS EXPECTED ACROSS EASTERN IOWA AND NORTHWEST ILLINOIS THIS AFTERNOON AND TONIGHT. A RAPIDLY DEEPENING LOW PRESSURE SYSTEM WILL MOVE FROM WESTERN NEBRASKA LATE THIS MORNING TO SOUTHWEST MINNESOTA BY EVENING. THIS LOW WILL PUMP GULF MOISTURE... MARKED BY DEWPOINTS AT OR ABOVE 60 DEGREES F... INTO THE AREA. ABOVE THE SURFACE VERY STRONG WINDS AT 850MB /ABOUT 5000FT/ UP TO 60 MPH AND EVEN HIGHER WINDS UP TO 140 MPH IN THE JET STREAM WILL COMBINE TO PRODUCE STRONG SPEED AND DIRECTIONAL SHEAR ACROSS THE AREA. A COLD FRONT OVER CENTRAL NEBRASKA AND KANSAS WILL RACE EAST NORTHEAST... REACHING THE MISSISSIPPI RIVER BY 600 PM. THE COLD FRONT WILL INTERACT WITH THE GULF MOISTURE... VERY STRONG SPEED AND DIRECTIONAL SHEAR AND INSTABILITY TO 1000 J/KG /CAPE/ TO PRODUCE POTENTIALLY VIOLENT DAMAGING THUNDERSTORMS THIS AFTERNOON. THE PRIMARY THREAT WILL BE DAMAGING WIND GUSTS TO 60 MPH OR GREATER. HOWEVER... DUE TO THE FAVORABLE WIND PROFILE... A FEW TORNADOES ARE POSSIBLE. AS FOR TIMING... EASTERN IOWA WILL BE UNDER THE GUN AFTER 100 PM WITH NORTHWEST ILLINOIS UNDER THE THREAT AFTER 300 PM. AFTER THE STORM PASSES TIGHTLY PACKED ISOBARS AROUND THE DEEP LOW PRESSURE SYSTEM WILL USHER IN COLDER AIR FROM THE WEST. THE WIND CREATED BY THE PACKED ISOBARS /GRADIENT WIND/ WILL PRODUCE WIND SPEEDS FROM 20 TO 30 MPH WITH GUSTS TO 45 MPH POSSIBLE IN THE EVENING ACROSS ALL OF EASTERN IOWA AND NORTHWEST ILLINOIS. SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON ACROSS EASTERN IOWA AND NORTHWEST ILLINOIS. THE HAZARD COMMUNITY SHOULD CLOSELY MONITOR LATER FORECASTS AND STATEMENTS CONCERNING THIS POTENTIALLY DANGEROUS WEATHER SITUATION. HENDRICKS/HOLSTEN
Special weather statement, Oct 29, 10:42 AM CST, 3 hours 14 minutes before
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-300245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1042 AM CST TUE OCT 29 1996 ...A TORNADO WATCH IS IN EFFECT UNTIL 500 PM CST FOR A SMALL PORTION OF EASTERN IOWA... A TORNADO WATCH IS IN EFFECT FOR A SMALL PORTION OF EASTERN IOWA UNTIL 500 PM CST. THIS INCLUDES THE COUNTY OF KEOKUK. SOME CITIES IN THE WATCH AREA ARE SIGOURNEY... WHAT CHEER AND LANCASTER. THE REMAINDER OF EASTERN IOWA AND NORTHWEST ILLINOIS ARE NOT CURRENTLY UNDER A WATCH. REPEATING... THE MAJOR METROPOLITIAN AREAS OF EASTERN IOWA AND NORTHWEST ILLINOIS... INCLUDING CEDAR RAPIDS... DUBUQUE... THE QUAD CITIES AND BURLINGTON ARE NOT INCLUDED IN THE WATCH AREA. STAY TUNED TO LATER STATEMENTS OR POSSIBLE WARNINGS. HENDRICKS
Special weather statement, Oct 29, 10:43 AM CST, 3 hours 13 minutes before
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-300245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1042 AM CST TUE OCT 29 1996 ...A TORNADO WATCH IS IN EFFECT UNTIL 500 PM CST FOR A SMALL PORTION OF EASTERN IOWA... A TORNADO WATCH IS IN EFFECT FOR A SMALL PORTION OF EASTERN IOWA UNTIL 500 PM CST. THIS INCLUDES THE COUNTY OF KEOKUK. SOME CITIES IN THE WATCH AREA ARE SIGOURNEY... WHAT CHEER AND LANCASTER. THE REMAINDER OF EASTERN IOWA AND NORTHWEST ILLINOIS ARE NOT CURRENTLY UNDER A WATCH. REPEATING... THE MAJOR METROPOLITIAN AREAS OF EASTERN IOWA AND NORTHWEST ILLINOIS... INCLUDING CEDAR RAPIDS... DUBUQUE... THE QUAD CITIES AND BURLINGTON ARE NOT INCLUDED IN THE WATCH AREA. STAY TUNED TO LATER STATEMENTS OR POSSIBLE WARNINGS. HENDRICKS
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 1:48 PM CST | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 42 min |
| Oct 29, 1:54 PM CST | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 36 min |
| Oct 29, 2:33 PM CST | Tornado Warning | DVN | Johnson, Washington | 42 min |
| Oct 29, 2:55 PM CST | Severe Thunderstorm Warning | DVN | Cedar | 50 min |
| Oct 29, 3:02 PM CST | Tornado Warning | DVN | Jones | 43 min |
| Oct 29, 3:03 PM CST | Tornado Warning | DVN | Cedar | 42 min |
| Oct 29, 3:23 PM CST | Severe Thunderstorm Warning | DVN | Clinton, Scott | 52 min |
| Oct 29, 3:26 PM CST | Tornado Warning | DVN | Clinton, Scott | 49 min |
| Oct 29, 3:33 PM CST | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 42 min |
| Oct 29, 4:04 PM CST | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess | 56 min |
| Oct 29, 4:09 PM CST | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 66 min |
| Oct 29, 4:19 PM CST | Severe Thunderstorm Warning | DVN | Whiteside | 41 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1996Every severe thunderstorm warning in 1996
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.