Alert archive / Indiana / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 124, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Sep 20, 2014, 3:30 PM CDT for Kankakee County, Illinois; 4 counties in Indiana. It was in force for 45 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
- Sep 20, 2014, 3:30 PM CDT (20:30 UTC)
- Expired
- Sep 20, 2014, 4:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kankakee County, IL, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 74 km from the middle of the area, began a volume at 20:32 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 |
|---|---|---|---|
| Sep 20, 2:12 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 158 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
- 46 J/kg
- Mixed-layer CIN
- -295 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 93 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 Sep 20, 3:29 PM CDT, 1 minute earlier.
Area forecast discussion, Sep 20, 3:29 PM CDT, 1 minute before
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</html>Hazardous weather outlook, Sep 20, 11:04 AM CDT, 4 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1104 AM CDT SAT SEP 20 2014 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 211615- 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- 1104 AM CDT SAT SEP 20 2014 /1204 PM EDT SAT SEP 20 2014/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. WEATHER HAZARDS EXPECTED: SCATTERED THUNDERSTORMS...A FEW MAY PRODUCE: HAIL TO THE SIZE OF QUARTERS. DAMAGING WIND GUSTS IN EXCESS OF 60 MPH. LOCALLY HEAVY RAINFALL. AREAS AFFECTED AND TIMING: WHILE SCATTERED THUNDERSTORMS ARE EXPECTED FOR THE ENTIRE OUTLOOK AREA THIS AFTERNOON...THE HIGHER THREAT FOR STRONG TO SEVERE THUNDERSTORMS WILL ROUGHLY BE SOUTH OF A CHICAGO TO MENDOTA LINE IN THE EARLY TO LATE AFTERNOON. WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED TO SHIFT TO MAINLY EAST OF INTERSTATE 57 BY EARLY EVENING. DISCUSSION: SHOWER AND THUNDERSTORM COVERAGE IS EXPECTED TO INCREASE THIS AFTERNOON AS A COLD FRONT APPROACHES...WITH THE STORMS SHIFTING SOUTHEAST ACROSS THE OUTLOOK AREA INTO THE EARLY EVENING HOURS. A COMBINATION OF MODERATE INSTABILITY AND FAIRLY HIGH LEVELS OF DEEP LAYER WIND SHEAR IS EXPECTED TO YIELD A THREAT FOR ISOLATED TO SCATTERED STRONG TO SEVERE STORMS CAPABLE OF PRODUCING STRONG WINDS AND HAIL. THE ATMOSPHERE IS CAPPED TO INTENSE THUNDERSTORM DEVELOPMENT AS OF THE LATE MORNING HOURS...SO THE HIGHER THREAT FOR STRONG TO SEVERE THUNDERSTORM DEVELOPMENT IS EXPECTED TO BE LIMITED TO AREAS PRIMARILY SOUTH OF A MENDOTA TO CHICAGO LINE THIS AFTERNOON WHERE THERE WILL BE MORE TIME TO INCREASE INSTABILITY LEVELS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THROUGH TONIGHT. && LMZ740>745-211615- 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- 1104 AM CDT SAT SEP 20 2014 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 CONTINUE TO LEAD TO HAZARDOUS CONDITIONS FOR SMALL CRAFT THROUGH THIS AFTERNOON. THERE IS A CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH THIS EVENING. SOME OF THESE STORMS MAY PRODUCE WINDS IN EXCESS OF 34 KNOTS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. STRONG WINDS AND HIGH WAVES MAY CREATE HAZARDOUS CONDITIONS FOR SMALL CRAFT SUNDAY LATE MORNING THROUGH MONDAY MORNING...MAINLY FOR THE ILLINOIS NEARSHORE. GALE FORCE WINDS ARE POSSIBLE FOR THE INDIANA NEARSHORE EAST OF GARY. && LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-211615- 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- 1104 AM CDT SAT SEP 20 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH THIS EVENING. SOME OF THESE STORMS MAY PRODUCE WINDS IN EXCESS OF 34 KNOTS MAINLY ALONG THE SOUTHERN THIRD OF THE LAKE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. GALE FORCE WINDS ARE POSSIBLE FOR THE SOUTHERN HALF OF THE LAKE SUNDAY MORNING THROUGH SUNDAY EVENING. && RC 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
In the hours before
Local storm report, Sep 20, 2:39 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
239 PM CDT SAT SEP 20 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 PM TSTM WND GST PEOTONE 41.33N 87.80W
09/20/2014 M56 MPH WILL IL CO-OP OBSERVER
ALSO...PEA SIZED HAIL.
&&
AKREINLocal storm report, Sep 20, 2:45 PM CDT, 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
245 PM CDT SAT SEP 20 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0240 PM HEAVY RAIN PEOTONE 41.33N 87.80W
09/20/2014 M0.75 INCH WILL IL CO-OP OBSERVER
MEASURED 0.75 INCHES OF RAIN IN 7 MINUTES.
&&Local storm report, Sep 20, 3:09 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
309 PM CDT SAT SEP 20 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0255 PM TSTM WND DMG 2 S BEECHER 41.32N 87.61W
09/20/2014 WILL IL TRAINED SPOTTER
3 POWER LINES COMPLETELY DOWN 2 MILES S OF BEECHER ALONG
IL-1.
&&
BNLocal storm report, Sep 20, 3:15 PM CDT, 15 minutes before
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</html>The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 3:27 AM CDT | Gale Watch | LOT | 24 hr | |
| Sep 20, 2:12 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Will | 33 min |
| Sep 20, 2:42 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 48 min |
| Sep 20, 3:38 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 37 min |
| Sep 20, 3:55 PM CDT | Special Weather Statement | LOT | Ford | 35 min |
| Sep 20, 4:01 PM CDT | Small Craft Advisory | LOT | 17 hr | |
| Sep 20, 4:09 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 36 min |
| Sep 20, 3:14 PM CDT | Tornado Warning | LOT | Porter | 19 min |
| Sep 20, 3:23 PM CDT | Severe Thunderstorm Warning | LOT | Porter | 17 min |
| Sep 20, 4:45 PM CDT | Severe Thunderstorm Warning | LOT | Benton, Jasper | 30 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 2014Severe Thunderstorm Warnings in Illinois, 2014Every severe thunderstorm warning 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.