Alert archive / Illinois / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 76, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jun 24, 2013, 4:09 PM CDT for LaSalle County, Lee County, Ogle County, Illinois. It was in force for 66 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
- Jun 24, 2013, 4:09 PM CDT (21:09 UTC)
- Expired
- Jun 24, 2013, 5:15 PM CDT
- In force
- 66 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 80.0 mph
Counties LaSalle County, IL, Lee County, IL, Ogle County, IL
The radar
The Chicago radar (KLOT), 91 km from the middle of the area, began a volume at 21:10 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 |
|---|---|---|---|
| Jun 24, 3:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.2 hours before the alert went out and 180 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
- 1763 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 947 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- -54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jun 24, 4:01 PM CDT, 8 minutes earlier.
Area forecast discussion, Jun 24, 4:01 PM CDT, 8 minutes before
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</html>Hazardous weather outlook, Jun 24, 11:19 AM CDT, 4 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1119 AM CDT MON JUN 24 2013
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
251630-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
1119 AM CDT MON JUN 24 2013 /1219 PM EDT MON JUN 24 2013/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...THIS AFTERNOON AND TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS...THE STRONGEST MAY PRODUCE:
FREQUENT CLOUD TO GROUND LIGHTNING.
HEAVY RAIN AND FLASH FLOODING.
GUSTY WINDS IN EXCESS OF 60 MPH
HAIL TO THE SIZE OF QUARTERS.
AREAS AFFECTED AND TIMING:
ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
THIS AFTERNOON AND CONTINUE EARLY THIS EVENING. THE BEST
CHANCES FOR STRONG STORMS APPEARS TO REMAIN ALONG AND SOUTH OF
INTERSTATE 80.
DISCUSSION:
CLOUD COVER REMAINS ACROSS THE AREA THIS MORNING IN THE WAKE OF
THE DECAYING SHOWERS AND THUNDERSTORMS. HOWEVER...REGIONAL
SATELLITE IMAGERY INDICATES RAPID THINNING OF THE CLOUDS ACROSS
NORTHERN ILLINOIS...WITH CLEARING NOTED ACROSS PORTIONS OF
WESTERN ILLINOIS. THEREFORE...CLEARING SKIES ARE EXPECTED BY
EARLY AFTERNOON...ESPECIALLY FOR AREAS SOUTH OF INTERSTATE 80.
ONCE SKIES CLEAR INSTABILITY WILL INCREASE. THIS LOOKS TO SET
THE STAGE FOR ADDITIONAL SCATTERED THUNDERSTORMS THIS AFTERNOON
AS ANOTHER UPPER LEVEL WEATHER DISTURBANCE APPROACHES THE AREA.
THESE STORMS ARE EXPECTED TO BE SOMEWHAT SLOW MOVING AND
EFFICIENT RAINFALL PRODUCERS. THE HEAVY RAINFALL COULD RESULT
IN FLASH FLOODING...ESPECIALLY ACROSS AREAS THAT HAVE RECEIVED
HEAVY RAINFALL IN THE PAST 24 TO 48 HOURS. THERE WILL ALSO BE
AN ISOLATED THREAT FOR SEVERE WINDS AND HAIL WITH SOME OF THE
STRONGEST STORMS.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS TUESDAY THROUGH
FRIDAY. SOME STORMS COULD REACH SEVERE LEVELS AND PRODUCE FLASH
FLOODING.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND HEAVY RAINFALL
REPORTS AND FLOODING REPORTS ARE APPRECIATED.
&&
LMZ740>745-251630-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
1119 AM CDT MON JUN 24 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.
.DAY ONE...THIS AFTERNOON AND TONIGHT.
SCATTERED THUNDERSTORMS ARE EXPECTED TODAY. SOME STORMS MAY
PRODUCE GUSTY WINDS IN EXCESS OF 30 KT.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS TUESDAY THROUGH
FRIDAY.
&&
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-251630-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
1119 AM CDT MON JUN 24 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.
.DAY ONE...THIS AFTERNOON AND TONIGHT.
SCATTERED THUNDERSTORMS ARE EXPECTED TODAY...MAINLY ACROSS THE
SOUTH HALF OF THE LAKE.
AREAS OF DENSE FOG ARE LIKELY MAINLY OVER THE NORTH HALF OF THE
LAKE THROUGH TONIGHT.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
DENSE FOG IS POSSIBLE...MAINLY OVER THE NORTH HALF OF THE LAKE
EARLY TUESDAY.
THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS MONDAY THROUGH
FRIDAY.
&&
KJB
VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)
FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGOThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 3:37 AM CDT | Flash Flood Watch | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more | 60 hr |
| Jun 24, 10:03 AM CDT | River Flood Watch | LOT | Winnebago | 54 hr |
| Jun 24, 10:03 AM CDT | River Flood Watch | LOT | Winnebago | 44 hr |
| Jun 24, 10:03 AM CDT | River Flood Watch | LOT | Winnebago | 48 hr |
| Jun 24, 4:30 PM CDT | Tornado Warning | LOT | Lee | 30 min |
| Jun 24, 4:33 PM CDT | Special Marine Warning | LOT | 3 hr | |
| Jun 24, 4:47 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Grundy, Kane, Kendall, LaSalle and 4 more | 58 min |
| Jun 24, 4:51 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle, Livingston | 54 min |
| Jun 24, 4:59 PM CDT | Tornado Warning | LOT | DeKalb, Kane, Kendall, LaSalle | 31 min |
| Jun 24, 5:24 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane, Kendall, Lake, McHenry and 1 more | 81 min |
| Jun 24, 5:36 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Grundy, Iroquois, Kankakee, Livingston, Will | 84 min |
| Jun 24, 6:31 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 59 min |
| Jun 24, 6:48 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 87 min |
| Jun 24, 5:42 PM CDT | Special Weather Statement | LOT | Lake | 18 min |
| Jun 24, 6:01 PM CDT | Severe Thunderstorm Warning | LOT | Jasper, Lake, Newton, Porter | 74 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2013Every severe thunderstorm warning in 2013
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.