Alert archive / Illinois / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 39, NWS Chicago, IL

April 14, 2006Ford County, Illinois

NWS Chicago, IL issued this severe thunderstorm warning at Apr 14, 2006, 1:24 AM CDT for Ford County, Illinois. It was in force for 51 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: Apr 14, 2006, 1:24 AM CDT (06:24 UTC)
Expired: Apr 14, 2006, 2:15 AM CDT
In force: 51 min
Issued by: NWS Chicago, IL
Area: Counties, with a storm outline in the text

County Ford County, IL

The radar

The Lincoln radar (KILX), 107 km from the middle of the area, began a volume at 06:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 13, 8:24 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.4 hours before the alert went out and 59 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2712 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

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 Chicago, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 14, 1:05 AM CDT, 19 minutes earlier.

Area forecast discussion, Apr 14, 1:05 AM CDT, 19 minutes before

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Hazardous weather outlook, Apr 13, 4:30 PM CDT, 8 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
430 PM CDT THU APR 13 2006

ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011-
019-140930-
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
430 PM CDT THU APR 13 2006

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL
AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA.

.DAY ONE... TONIGHT

THUNDERSTORMS ARE LIKELY ACROSS THE OUTLOOK AREA TONIGHT. THERE IS A
SLIGHT RISK THAT SOME OF THESE STORMS COULD BE SEVERE...WITH LARGE
HAIL AND DAMAGING WINDS THE PRIMARY SEVERE WEATHER THREATS.

THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS PARTS OF EASTERN IOWA
AND NORTHEAST MISSOURI THIS EVENING...AND SPREAD EAST ALONG A WARM
FRONT ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA DURING THE LATE
EVENING AND OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

THERE IS A CHANCE OF THUNDERSTORMS FRIDAY AFTERNOON AND EVENING
ACROSS PARTS OF THE OUTLOOK AREA...MAINLY SOUTH OF INTERSTATE 80.
THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BE SEVERE.

THERE IS A CHANCE OF THUNDERSTORMS AGAIN LATE SATURDAY THROUGH
SUNDAY. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BE
SEVERE...MAINLY ACROSS EASTERN PARTS OF THE OUTLOOK AREA SUNDAY
AFTERNOON.

ISOLATED THUNDERSTORMS ARE AGAIN POSSIBLE LATE TUESDAY INTO
WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)

LMZ740>745-766-140930-
WINTHROP HARBOR IL TO MICHIGAN CITY IN-
LAKE MICHIGAN-
430 PM CDT THU APR 13 2006

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS
AND INDIANA WATERS OF LAKE MICHIGAN.

.DAY ONE... TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS TONIGHT. THERE IS A SLIGHT RISK
THAT SOME OF THESE STORMS COULD BE SEVERE...WITH LARGE HAIL AND
STRONG GUSTY WINDS THE MAIN SEVERE WEATHER THREATS.

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

THERE IS A CHANCE OF THUNDERSTORMS OVER FAR SOUTHERN LAKE MICHIGAN
FRIDAY AFTERNOON...AND AGAIN LATE SATURDAY INTO SUNDAY.

ISOLATED THUNDERSTORMS ARE AGAIN POSSIBLE LATE TUESDAY INTO
WEDNESDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)

In the hours before

Local storm report, Apr 13, 10:49 PM CDT, 2 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1049 PM CDT THU APR 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1038 PM     HAIL             NORTH CHICAGO           42.32N 87.86W
04/13/2006  E1.00 INCH       LAKE               IL   TRAINED SPOTTER

            3/4 TO ONE INCH AT 14TH ST AND SHERIDAN

&&

BNELSON

Local storm report, Apr 13, 10:51 PM CDT, 2 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1051 PM CDT THU APR 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1022 PM     DOWNBURST        MUNDELEIN               42.27N 88.00W
04/13/2006                   LAKE               IL   TRAINED SPOTTER

            1/2 TO 3/4 INCH HAIL.AT MIDLOTHIAN RD AND COKENBERG RD.

&&

BNELSON

Local storm report, Apr 13, 11:27 PM CDT, 1 hour 57 minutes before

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Local storm report, Apr 14, 12:14 AM CDT, 1 hour 10 minutes before

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Local storm report, Apr 14, 12:32 AM CDT, 52 minutes before

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Local storm report, Apr 14, 1:08 AM CDT, 16 minutes before

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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 8:57 PM CDT	Severe Thunderstorm Warning	LOT	Lee, Ogle	52 min
Apr 13, 9:28 PM CDT	Severe Thunderstorm Warning	LOT	Winnebago	29 min
Apr 13, 9:47 PM CDT	Severe Thunderstorm Warning	LOT	Boone	17 min
Apr 13, 9:55 PM CDT	Severe Thunderstorm Warning	LOT	McHenry	29 min
Apr 13, 10:11 PM CDT	Special Marine Warning	LOT		49 min
Apr 13, 10:11 PM CDT	Severe Thunderstorm Warning	LOT	Lake	35 min
Apr 13, 10:50 PM CDT	Severe Thunderstorm Warning	LOT	LaSalle	25 min
Apr 13, 10:57 PM CDT	Severe Thunderstorm Warning	LOT	Will	33 min
Apr 13, 11:06 PM CDT	Tornado Warning	LOT	LaSalle, Livingston	39 min
Apr 13, 11:47 PM CDT	Severe Thunderstorm Warning	LOT	Livingston	43 min
Apr 14, 12:13 AM CDT	Severe Thunderstorm Warning	LOT	Ford	37 min
Apr 14, 12:47 AM CDT	Severe Thunderstorm Warning	LOT	LaSalle, Livingston	58 min
Apr 14, 12:58 AM CDT	Severe Thunderstorm Warning	LOT	Ogle	19 min
Apr 14, 1:45 AM CDT	Severe Thunderstorm Warning	LOT	Livingston	45 min
Apr 14, 1:46 AM CDT	Severe Thunderstorm Warning	LOT	LaSalle	44 min
Apr 14, 1:53 AM CDT	Severe Thunderstorm Warning	LOT	Kane	37 min
Apr 14, 2:33 AM CDT	Severe Thunderstorm Warning	LOT	Kendall	14 min
Apr 14, 5:52 PM CDT	Severe Thunderstorm Warning	LOT	Iroquois	23 min
Apr 14, 6:06 PM CDT	Severe Thunderstorm Warning	LOT	LaSalle	39 min
Apr 14, 6:15 PM CDT	Severe Thunderstorm Warning	LOT	Iroquois	15 min
Apr 14, 6:15 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Kendall, Will	45 min
Apr 14, 6:22 PM CDT	Tornado Warning	LOT	LaSalle	38 min
Apr 14, 6:29 PM CDT	Tornado Warning	LOT	Iroquois	46 min
Apr 14, 6:33 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Will	42 min
Apr 14, 6:41 PM CDT	Tornado Warning	LOT	Grundy, Will	49 min
Apr 14, 6:47 PM CDT	Tornado Warning	LOT	Grundy, Livingston	43 min
Apr 14, 5:59 PM CDT	Severe Thunderstorm Warning	LOT	Jasper, Newton	31 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2006 Every severe thunderstorm warning in 2006

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.