Alert archive / Illinois / Wind Chill Advisories in 2014

Wind Chill Advisory 4, NWS Chicago, IL

January 23, 201416 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind chill advisory at Jan 23, 2014, 4:12 AM CST for 16 counties in Illinois; 5 counties in Indiana. It took effect at Jan 23, 2014, 6:00 PM CST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Jan 23, 2014, 4:12 AM CST (10:12 UTC)
In effect from
Jan 23, 2014, 6:00 PM CST
Expired
Jan 24, 2014, 10:00 AM CST
In force
16 hr
Issued by
NWS Chicago, IL
All 21 counties

Boone County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 15 km from the middle of the area, began a volume at 10:10 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 10.2 hours before the alert went out and 329 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, Green Bay/Straub, WI at 00:00Z on 2014-01-23Temperature 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, Green Bay/Straub, WI at 00:00Z on 2014-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.19395878Sfc1 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
757 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory 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 wind chill advisory went out at Jan 23, 3:54 AM CST, 18 minutes earlier.

Area forecast discussion, Jan 23, 3:54 AM CST, 18 minutes before
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Hazardous weather outlook, Jan 22, 4:55 PM CST, 11 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
455 PM CST WED JAN 22 2014

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
232300-
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-
455 PM CST WED JAN 22 2014 /555 PM EST WED JAN 22 2014/

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

.DAY ONE...TONIGHT.

NORTHWEST WINDS GUSTING TO 35 MPH WILL PRODUCE SIGNIFICANT
BLOWING AND DRIFTING SNOW...ESPECIALLY IN OPEN AREAS.

WIND CHILLS 20 BELOW TO 35 BELOW ZERO ARE POSSIBLE TONIGHT. THE
LOWEST WIND CHILLS SHOULD BE WEST OF THE FOX VALLEY AND NORTH OF
INTERSTATE 80.

LOCALIZED RIVER FLOODING WILL REMAIN POSSIBLE...ESPECIALLY NEAR
ANY ISOLATED ICE JAMS...PARTICULARLY ALONG THE KANKAKEE RIVER.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

WIND CHILLS 20 BELOW TO 30 BELOW ZERO ARE EXPECTED THROUGH
THURSDAY MORNING. WIND CHILLS TO 30 BELOW ZERO ARE POSSIBLE
AGAIN THURSDAY NIGHT INTO FRIDAY MORNING...SUNDAY NIGHT INTO
MONDAY MORNING AND MONDAY NIGHT INTO TUESDAY MORNING.

PERIODIC CHANCES FOR SNOW WILL CONTINUE THURSDAY THROUGH THE
UPCOMING WEEKEND. THE BEST CHANCE FOR ACCUMULATING SNOW WILL BE
SATURDAY NIGHT INTO SUNDAY MORNING.

GUSTY WINDS UP TO 50 MPH ARE POSSIBLE FRIDAY...AND MAY CREATE
CONSIDERABLE BLOWING AND DRIFTING SNOW.

LOCALIZED RIVER FLOODING WILL REMAIN POSSIBLE...ESPECIALLY NEAR
ISOLATED ICE JAMS...PARTICULARLY ALONG THE KANKAKEE RIVER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

LMZ740>745-232300-
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-
455 PM CST WED JAN 22 2014

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

.DAY ONE...TONIGHT.

WINDS AND WAVES WILL BE HAZARDOUS TO SMALL CRAFT TONIGHT FOR THE
ILLINOIS NEARSHORE WATERS.

NORTHWEST GALES TO 40 KT ARE EXPECTED TONIGHT FOR THE INDIANA
NEARSHORE WATERS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

WINDS AND WAVES WILL BE HAZARDOUS TO SMALL CRAFT THURSDAY AND
THURSDAY NIGHT FOR THE ILLINOIS NEARSHORE WATERS.

NORTHWEST GALES TO 35 KT WILL CONTINUE THROUGH THURSDAY AFTERNOON
FOR THE INDIANA NEARSHORE WATERS.

SOUTHWEST GALES TO 45 KT ARE EXPECTED FRIDAY INTO SATURDAY FOR
THE ENTIRE NEARSHORE WATERS.

WINDS AND WAVES HAZARDOUS TO SMALL CRAFT ARE LIKELY SATURDAY
AFTERNOON THROUGH MONDAY.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-232300-
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-
455 PM CST WED JAN 22 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

NORTHWEST GALES TO 35 KT ARE EXPECTED TONIGHT FOR THE SOUTHERN
HALF OF LAKE MICHIGAN. HEAVY FREEZING SPRAY IS POSSIBLE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

GALES WILL CONTINUE THROUGH THURSDAY AFTERNOON...MAINLY FOR THE
SOUTHERN HALF OF LAKE MICHIGAN.

GALES MAY DEVELOP AGAIN THURSDAY NIGHT THROUGH SATURDAY FOR THE
ENTIRE LAKE. OCCASIONAL STORM FORCE GUSTS TO 50 KT ARE POSSIBLE
FRIDAY.

HEAVY FREEZING SPRAY IS POSSIBLE THROUGH SATURDAY.

&&

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/NWSCHICAGO

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 23, 3:35 AM CSTGale WarningLOT60 hr
Jan 23, 3:37 PM CSTWinter Weather AdvisoryLOTBoone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more41 hr
Jan 23, 4:06 PM CSTGale WatchLOT11 hr
Jan 23, 4:06 PM CSTStorm WarningLOT29 hr
Jan 23, 4:06 PM CSTHeavy Freezing Spray WarningLOT53 hr

Nearby

Wind Chill Advisories in Illinois, 2014Wind Chill Advisories in Indiana, 2014Every wind chill advisory in 2014

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.