Alert archive / Illinois / Frost Advisories in 2016
Frost Advisory 1, NWS Chicago, IL
NWS Chicago, IL issued this frost advisory at Apr 22, 2016, 3:26 AM CDT for 4 counties in Illinois. It took effect at Apr 23, 2016, 1:00 AM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 22, 2016, 3:26 AM CDT (08:26 UTC)
- In effect from
- Apr 23, 2016, 1:00 AM CDT
- Expired
- Apr 23, 2016, 8:00 AM CDT
- In force
- 7 hr
- Issued by
- NWS Chicago, IL
Counties Boone County, IL, Lake County, IL, McHenry County, IL, Winnebago County, IL
The radar
The Milwaukee radar (KMKX), 71 km from the middle of the area, began a volume at 08:24 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 nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 8.4 hours before the alert went out and 178 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
- 1418 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost 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 frost advisory went out at Apr 21, 6:48 PM CDT, 8 hours 38 minutes earlier.
Area forecast discussion, Apr 21, 6:48 PM CDT, 8 hours 38 minutes before
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</html>Hazardous weather outlook, Apr 21, 4:08 PM CDT, 11 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 408 PM CDT THU APR 21 2016 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 222115- 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- 408 PM CDT THU APR 21 2016 /508 PM EDT THU APR 21 2016/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...TONIGHT. WEATHER HAZARDS EXPECTED: SCATTERED THUNDERSTORMS...SOME OF WHICH MAY HAVE: HAIL...POSSIBLY UP TO QUARTER SIZE. AREAS AFFECTED AND TIMING: SCATTERED THUNDERSTORMS ARE POSSIBLE AREA WIDE THROUGH LATE THIS EVENING...ALTHOUGH THE POSSIBILITY OF HAIL IS HIGHER SOUTH OF INTERSTATE 88. GENERAL STORM MOTION OF THE DAY: MOVING NORTHEAST AT 30 MPH. DISCUSSION: SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE TO BLOSSOM IN COVERAGE LATE THIS AFTERNOON. THE ATMOSPHERE WILL FAVOR SOME STORMS TO HAVE SMALL HAIL. MOST OF THIS SHOULD BE SUB SEVERE BUT CANNOT RULE OUT QUARTER SIZE HAIL WITH THE STRONGEST STORMS. IN ADDITION...FOG IS POSSIBLE NEAR THE LAKE MICHIGAN SHORE THIS EVENING...SOME OF WHICH COULD BE DENSE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. PATCHY FROST IS POSSIBLE OVER NORTH CENTRAL AND PARTS OF NORTHEAST ILLINOIS ON FRIDAY NIGHT. THERE IS A CHANCE OF THUNDERSTORMS SUNDAY NIGHT THROUGH MONDAY NIGHT...AND THEN AGAIN TUESDAY NIGHT THROUGH WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT. && LMZ740>745-222115- 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- 408 PM CDT THU APR 21 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. AREAS OF DENSE FOG ARE LIKELY THROUGH THIS EVENING. THERE IS A SMALL CHANCE OF A FEW THUNDERSTORMS LATE THIS AFTERNOON THROUGH THIS EVENING. HAZARDOUS WIND AND WAVE CONDITIONS TO SMALL CRAFT WILL DEVELOP OVER THE ILLINOIS NEAR SHORE WATERS LATE TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. WINDS AND WAVES HAZARDOUS TO SMALL CRAFT ARE EXPECTED FRIDAY AND FRIDAY NIGHT. WINDS AND WAVES MAY AGAIN BECOME HAZARDOUS TO SMALL CRAFT SUNDAY THROUGH TUESDAY. THERE IS A CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY...AND AGAIN WEDNESDAY AND WEDNESDAY NIGHT. && LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-222115- 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- 408 PM CDT THU APR 21 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. AREAS OF DENSE FOG ARE LIKELY THROUGH THIS EVENING. THERE IS A SMALL CHANCE OF A FEW THUNDERSTORMS EARLY THIS EVENING OVER SOUTHERN LAKE MICHIGAN. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THERE IS A CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY OVER SOUTHERN LAKE MICHIGAN...AND AGAIN WEDNESDAY AND WEDNESDAY NIGHT ONCE AGAIN OVER SOUTHERN LAKE MICHIGAN. && BEACHLER/RODRIGUEZ VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
Nearby
Frost Advisories in Illinois, 2016Every frost advisory in 2016
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.