Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 80, NWS Quad Cities, IA

October 29, 1996Carroll County, Jo Daviess County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Oct 29, 1996, 4:04 PM CST for Carroll County, Jo Daviess County, Illinois. It was in force for 56 min. 1 report 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
Oct 29, 1996, 4:04 PM CST (22:04 UTC)
Expired
Oct 29, 1996, 5:00 PM CST
In force
56 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

Counties Carroll County, IL, Jo Daviess County, IL

The radar

The Quad Cities radar (KDVN), 79 km from the middle of the area, began a volume at 22:05 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

TimeReportWhereRemark
Oct 29, 4:52 PM CSTThunderstorm Wind 60Mt Carroll, 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 261 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 1996-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 1996-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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, 2:25 PM CST, 1 hour 39 minutes earlier.

Area forecast discussion, Oct 29, 2:25 PM CST, 1 hour 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
200 PM CST TUE OCT 29 1996

NO TIME FOR DISCUSSION. WX SPEAKS FOR ITSELF. SVR EVENT UNDERWAY.

HENDRICKS

In the hours before

Special weather statement, Oct 29, 2:46 PM CST, 1 hour 18 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
245 PM CST TUE OCT 29 1996

...TORNADO WATCH DISCONTINUED FOR A SMALL PORTION OF EASTERN IOWA...

THE TORNADO WATCH FOR KEOKUK COUNTY IN EASTERN IOWA HAS BEEN
TERMINATED.

NO SEVERE WEATHER OCCURRED IN THE WATCH AREA.

HENDRICKS
Special weather statement, Oct 29, 2:50 PM CST, 1 hour 14 minutes before
IAZ065-066-041-089-042-088-063-054-087-064-053-076-099-052-078-
067-068-098-077-ILZ017-007-034-025-016-001-035-024-018-015-002-
026-009-292245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
250 PM CST TUE OCT 29 1996

AT 250 PM...NWS DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
FROM CEDAR RAPIDS TO 10 MILES EAST OF KEOKUK. THESE STORMS WERE MOVING
NORTHEAST AT 50 MILES AN HOUR. ADDITIONAL STRONG THUNDERSTORMS HAD
DEVELOPED RAPIDLY EAST OF THE MISSISSIPPI FROM 5 MILES EAST OF CLINTON
TO 20 MILES SOUTH OF MOLINE MOVING NORTHEAST AT 50 MILES AN HOUR.

THESE STORMS ARE CAPABLE OF PRODUCING 50 MILE AN HOUR WINDS...PEA SIZE
HAIL AND DEADLY LIGHTNING.

HOLSTEN
Special weather statement, Oct 29, 2:52 PM CST, 1 hour 12 minutes before
IAZ065-066-041-089-042-088-063-054-087-064-053-076-099-052-078-
067-068-098-077-ILZ017-007-034-025-016-001-035-024-018-015-002-
026-009-292245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
250 PM CST TUE OCT 29 1996

AT 250 PM...NWS DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
FROM CEDAR RAPIDS TO 10 MILES EAST OF KEOKUK. THESE STORMS WERE MOVING
NORTHEAST AT 50 MILES AN HOUR. ADDITIONAL STRONG THUNDERSTORMS HAD
DEVELOPED RAPIDLY EAST OF THE MISSISSIPPI FROM 5 MILES EAST OF CLINTON
TO 20 MILES SOUTH OF MOLINE MOVING NORTHEAST AT 50 MILES AN HOUR.

THESE STORMS ARE CAPABLE OF PRODUCING 50 MILE AN HOUR WINDS...PEA SIZE
HAIL AND DEADLY LIGHTNING.

HOLSTE2N
Special weather statement, Oct 29, 3:21 PM CST, 43 minutes before
IAZ065-066-041-042-054-053-099-078-067-068-ILZ017-007-034-025-016-
001-035-024-018-015-002-026-009-292330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
321 PM CST TUE OCT 29 1996

AT 320 PM...NWS DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
FROM MONTICELLO TO MUSCATINE TO JUST WEST OF MACOMB MOVING NORTHEAST AT
50 MILES AN HOUR. WITH THE PASSAGE OF THIS LINE OF THUNDERSTORMS...WIND
GUSTS IN EXCESS OF 60 MILES AN HOUR ARE POSSIBLE.

HOLSTEN
Special weather statement, Oct 29, 3:22 PM CST, 42 minutes before
IAZ065-066-041-042-054-053-099-078-067-068-ILZ017-007-034-025-016-
001-035-024-018-015-002-026-009-292330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
321 PM CST TUE OCT 29 1996

AT 320 PM...NWS DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
FROM MONTICELLO TO MUSCATINE TO JUST WEST OF MACOMB MOVING NORTHEAST AT
50 MILES AN HOUR. WITH THE PASSAGE OF THIS LINE OF THUNDERSTORMS...WIND
GUSTS IN EXCESS OF 60 MILES AN HOUR ARE POSSIBLE.

HOLSTEN
Local storm report, Oct 29, 3:37 PM CST, 27 minutes before
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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 29, 1:48 PM CSTSevere Thunderstorm WarningDVNDubuque, Jackson, Jones42 min
Oct 29, 1:54 PM CSTSevere Thunderstorm WarningDVNDubuque, Jackson, Jones36 min
Oct 29, 2:33 PM CSTTornado WarningDVNJohnson, Washington42 min
Oct 29, 2:55 PM CSTSevere Thunderstorm WarningDVNCedar50 min
Oct 29, 3:02 PM CSTTornado WarningDVNJones43 min
Oct 29, 3:03 PM CSTTornado WarningDVNCedar42 min
Oct 29, 3:23 PM CSTSevere Thunderstorm WarningDVNClinton, Scott52 min
Oct 29, 3:26 PM CSTTornado WarningDVNClinton, Scott49 min
Oct 29, 1:56 PM CSTSevere Thunderstorm WarningDVNJo Daviess49 min
Oct 29, 3:33 PM CSTSevere Thunderstorm WarningDVNHenry, Whiteside42 min
Oct 29, 4:09 PM CSTSevere Thunderstorm WarningDVNBureau, Putnam66 min
Oct 29, 4:19 PM CSTSevere Thunderstorm WarningDVNWhiteside41 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.