Alert archive / Illinois / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 38, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jun 8, 2015, 2:18 PM CDT for Lake County, Illinois. It was in force for 27 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 8, 2015, 2:18 PM CDT (19:18 UTC)
- Expired
- Jun 8, 2015, 2:45 PM CDT
- In force
- 27 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lake County, IL
The radar
The Chicago radar (KLOT), 85 km from the middle of the area, began a volume at 19:21 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 12:00Z, 7.3 hours before the alert went out and 233 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
- 4 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 1477 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- 17 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 8, 12:58 PM CDT, 1 hour 20 minutes earlier.
Area forecast discussion, Jun 8, 12:58 PM CDT, 1 hour 20 minutes before
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</html>Hazardous weather outlook, Jun 8, 10:52 AM CDT, 3 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1052 AM CDT MON JUN 8 2015 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 091600- 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- 1052 AM CDT MON JUN 8 2015 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: HAIL UP TO THE SIZE OF QUARTERS. WIND GUSTS TO 60 MPH. AREAS AFFECTED AND TIMING: SCATTERED THUNDERSTORMS WILL DEVELOP OVER SOUTHERN WISCONSIN AROUND MIDDAY...THEN SHIFT SOUTHWARD OVER NORTHERN ILLINOIS AND NORTHWESTERN INDIANA THROUGH THE AFTERNOON. THESE THUNDERSTORMS WILL DIMINISH BY EARLY THIS EVENING. DISCUSSION: AS SURFACE TEMPERATURES WARM INTO THE LOWER TO MID 80S THIS AFTERNOON...UNSEASONABLY COLD AIR ALOFT ASSOCIATED WITH AN APPROACHING UPPER LEVEL DISTURBANCE WILL SHIFT OVER THE AREA. THIS WILL ALLOW FOR AMPLE INSTABILITY TO SUPPORT THUNDERSTORM DEVELOPMENT. ALTHOUGH WIDESPREAD SEVERE STORMS ARE NOT LIKELY WITH THIS ACTIVITY...SOME OF THE STRONGER STORMS COULD BECOME MARGINALLY SEVERE...WITH QUARTER SIZE HAIL...AND WIND GUSTS TO 60 MPH. THESE STORMS WILL DIMINISH ACROSS THE AREA BY EARLY THIS EVENING. PORTIONS OF THE IROQUOIS AND KANKAKEE RIVERS WILL REMAIN IN FLOOD. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PORTIONS OF THE IROQUOIS AND KANKAKEE RIVERS WILL REMAIN AT BANKFULL STAGE OR IN FLOOD THROUGH MID TO LATE WEEK. PERIODIC THUNDERSTORMS ARE POSSIBLE TUESDAY NIGHT THROUGH FRIDAY...AND AGAIN ON SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THROUGH THIS AFTERNOON. && LMZ740>745-091600- 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- 1052 AM CDT MON JUN 8 2015 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. STRONG WINDS WILL LEAD TO HAZARDOUS CONDITIONS FOR SMALL CRAFT ALONG THE ILLINOIS SHORE AND PARTS OF THE INDIANA SHORE THIS AFTERNOON. SCATTERED THUNDERSTORMS ARE ALSO EXPECTED THIS AFTERNOON AND EARLY EVENING. SOME OF THE STORMS MAY PRODUCE GUSTS IN EXCESS OF 35 KNOTS AND HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PERIODIC THUNDERSTORMS ARE POSSIBLE WEDNESDAY THROUGH FRIDAY AND AGAIN SUNDAY. && LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-091600- 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- 1052 AM CDT MON JUN 8 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT. AREAS OF DENSE FOG WILL CONTINUE THROUGH THIS AFTERNOON. SCATTERED THUNDERSTORMS ARE EXPECTED TODAY AND EARLY THIS EVENING. SOME OF THE STORMS MAY PRODUCE GUSTS IN EXCESS OF 35 KNOTS AND HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PERIODIC THUNDERSTORMS ARE POSSIBLE TUESDAY NIGHT THROUGH FRIDAY AND AGAIN SUNDAY. && RC 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
In the hours before
Local storm report, Jun 8, 9:45 AM CDT, 4 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
945 AM CDT MON JUN 08 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0944 AM HEAVY RAIN CHESTERTON 41.60N 87.06W
06/08/2015 E1.40 INCH PORTER IN TRAINED SPOTTER
TOTAL FROM SUNDAY.
&&
CSpecial weather statement, Jun 8, 1:53 PM CDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
153 PM CDT MON JUN 8 2015
ILZ006-081930-
LAKE IL-
153 PM CDT MON JUN 8 2015
...SPECIAL WEATHER STATEMENT FOR NORTHERN LAKE COUNTY UNTIL 230 PM
CDT...
AT 152 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
CAMP LAKE...MOVING EAST AT 25 MPH.
WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THIS STORM. DIME
SIZE HAIL WILL ALSO BE POSSIBLE ALONG THE IMMEDIATE WISCONSIN
BORDER.
THIS STRONG THUNDERSTORM WILL BE NEAR...
ANTIOCH AROUND 200 PM CDT.
WADSWORTH AROUND 220 PM CDT.
WAUKEGAN...ZION...BEACH PARK AND WINTHROP HARBOR AROUND 230 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE OLD MILL CREEK.
INCLUDING THE FOLLOWING INTERSTATES...
I-94 BETWEEN MILE MARKERS 1 AND 4.
I-294 BETWEEN MILE MARKERS 1 AND 4.
THIS INCLUDES... LAKE COUNTY FIELDERS BASEBALL.
LAT...LON 4249 8781 4247 8780 4240 8781 4248 8819
4249 8820
TIME...MOT...LOC 1852Z 289DEG 21KT 4253 8812
RCThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 8:31 PM CDT | Areal Flood Advisory | LOT | Grundy, LaSalle, Livingston | 4 hr |
| Jun 7, 8:33 PM CDT | Special Weather Statement | LOT | Ford, Grundy, Iroquois, Kankakee, Livingston | 72 min |
| Jun 7, 9:14 PM CDT | River Flood Warning | LOT | Iroquois | 67 hr |
| Jun 7, 9:25 PM CDT | River Flood Advisory | LOT | Iroquois | 4 days |
| Jun 7, 10:14 PM CDT | Flash Flood Warning | LOT | Iroquois, Kankakee | 5 hr |
| Jun 7, 11:10 PM CDT | Areal Flood Advisory | LOT | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston and 1 more | 11 hr |
| Jun 8, 3:05 AM CDT | Small Craft Advisory | LOT | 16 hr | |
| Jun 8, 7:49 AM CDT | River Flood Warning | LOT | Iroquois | 27 days |
| Jun 8, 8:18 AM CDT | River Flood Advisory | LOT | Kankakee | 36 hr |
| Jun 8, 8:29 AM CDT | Marine Dense Fog Advisory | LOT | 44 hr | |
| Jun 8, 12:00 PM CDT | River Flood Warning | LOT | Bureau, LaSalle, Putnam | 34 hr |
| Jun 8, 1:53 PM CDT | Special Marine Warning | LOT | 112 min | |
| Jun 8, 2:38 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 37 min |
| Jun 8, 2:45 PM CDT | River Flood Warning | LOT | Kankakee | 48 hr |
| Jun 8, 2:55 PM CDT | River Flood Advisory | LOT | Grundy, Will | 52 hr |
| Jun 8, 2:55 PM CDT | River Flood Advisory | LOT | Grundy | 16 hr |
| Jun 8, 3:16 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kane, Lake, McHenry | 44 min |
| Jun 8, 3:27 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Kane, Kendall, Lee | 50 min |
| Jun 8, 3:28 PM CDT | Special Marine Warning | LOT | 92 min | |
| Jun 8, 3:36 PM CDT | Special Marine Warning | LOT | 84 min | |
| Jun 8, 4:00 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 30 min |
| Jun 8, 4:33 PM CDT | Severe Thunderstorm Warning | LOT | Kane, Kendall | 42 min |
| Jun 8, 4:57 PM CDT | Special Marine Warning | LOT | 93 min | |
| Jun 8, 5:31 PM CDT | Special Marine Warning | LOT | 59 min | |
| Jun 8, 6:07 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 53 min |
| Jun 8, 6:38 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 37 min |
| Jun 7, 9:14 PM CDT | River Flood Warning | LOT | Lake, Newton | 51 days |
| Jun 7, 9:25 PM CDT | River Flood Advisory | LOT | Jasper | 60 hr |
| Jun 7, 9:25 PM CDT | River Flood Advisory | LOT | Newton | 4 days |
| Jun 8, 4:21 AM CDT | River Flood Warning | LOT | Jasper | 22 days |
| Jun 8, 7:49 AM CDT | River Flood Warning | LOT | Newton | 26 days |
| Jun 8, 9:01 AM CDT | River Flood Warning | LOT | Jasper, Porter | 3 days |
| Jun 8, 3:56 PM CDT | Severe Thunderstorm Warning | LOT | Porter | 49 min |
| Jun 8, 4:03 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 14 min |
| Jun 8, 4:20 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 40 min |
| Jun 8, 4:55 PM CDT | Areal Flood Advisory | LOT | Lake, Porter | 4 hr |
| Jun 8, 4:55 PM CDT | Severe Thunderstorm Warning | LOT | Lake, Porter | 56 min |
| Jun 8, 5:17 PM CDT | Flash Flood Warning | LOT | Lake, Porter | 6 hr |
| Jun 8, 6:02 PM CDT | Severe Thunderstorm Warning | LOT | Jasper, Lake, Newton, Porter | 43 min |
| Jun 8, 6:44 PM CDT | Severe Thunderstorm Warning | LOT | Jasper | 32 min |
| Jun 8, 6:53 PM CDT | Severe Thunderstorm Warning | LOT | Benton, Newton | 37 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2015Every severe thunderstorm warning in 2015
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.