Alert archive / Indiana / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 23, NWS Chicago, IL

March 1, 2017Jasper County, Newton County, Indiana

NWS Chicago, IL issued this severe thunderstorm warning at Mar 1, 2017, 12:04 AM CST for Jasper County, Newton County, Indiana. It was in force for 26 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: Mar 1, 2017, 12:04 AM CST (06:04 UTC)
Expired: Mar 1, 2017, 12:30 AM CST
In force: 26 min
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jasper County, IN, Newton County, IN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 28, 9:51 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.1 hours before the alert went out and 147 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 687 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 395 m²/s²
0-3 km storm-relative helicity: 431 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 6.7

Open this sounding in Storm Lab

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 Feb 28, 11:32 PM CST, 32 minutes earlier.

Area forecast discussion, Feb 28, 11:32 PM CST, 32 minutes before

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Hazardous weather outlook, Feb 28, 8:59 PM CST, 3 hours 5 minutes before

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In the hours before

Local storm report, Feb 28, 10:19 PM CST, 1 hour 45 minutes before

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Local storm report, Feb 28, 10:43 PM CST, 1 hour 21 minutes before

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Local storm report, Feb 28, 10:58 PM CST, 1 hour 6 minutes before

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Special weather statement, Feb 28, 11:20 PM CST, 44 minutes before

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Local storm report, Feb 28, 11:27 PM CST, 37 minutes before

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Special weather statement, Feb 28, 11:54 PM CST, 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:00 PM CST	Severe Thunderstorm Warning	LOT	Cook, Grundy, Kendall, Will	45 min
Feb 28, 6:13 PM CST	Tornado Warning	LOT	Grundy, LaSalle, Livingston	32 min
Feb 28, 6:24 PM CST	Severe Thunderstorm Warning	LOT	LaSalle	51 min
Feb 28, 6:26 PM CST	Areal Flood Advisory	LOT	Cook, Grundy, Kendall, LaSalle, Livingston, Will	3 hr
Feb 28, 6:44 PM CST	Severe Thunderstorm Warning	LOT	Kankakee, Will	46 min
Feb 28, 6:44 PM CST	Severe Thunderstorm Warning	LOT	Cook, Will	46 min
Feb 28, 7:04 PM CST	Severe Thunderstorm Warning	LOT	Grundy, Kendall, Will	41 min
Feb 28, 7:41 PM CST	Severe Thunderstorm Warning	LOT	LaSalle	34 min
Feb 28, 7:45 PM CST	Severe Thunderstorm Warning	LOT	Cook, Kankakee, Will	45 min
Feb 28, 8:04 PM CST	Severe Thunderstorm Warning	LOT	Grundy, LaSalle, Will	26 min
Feb 28, 8:24 PM CST	Special Marine Warning	LOT		96 min
Feb 28, 8:35 PM CST	Severe Thunderstorm Warning	LOT	DeKalb, Kendall, LaSalle, Lee	40 min
Feb 28, 8:51 PM CST	Areal Flood Advisory	LOT	Cook, DeKalb, DuPage, Grundy, Kane, Kankakee and 4 more	6 hr
Feb 28, 8:57 PM CST	Severe Thunderstorm Warning	LOT	Cook, Will	37 min
Feb 28, 9:09 PM CST	Areal Flood Warning	LOT	Cook, Grundy, Kendall, Will	6 hr
Feb 28, 9:34 PM CST	Severe Thunderstorm Warning	LOT	LaSalle	56 min
Feb 28, 9:57 PM CST	Special Weather Statement	LOT	Cook	33 min
Feb 28, 10:18 PM CST	Severe Thunderstorm Warning	LOT	DeKalb, DuPage, Grundy, Kane, Kendall, Will	27 min
Feb 28, 10:56 PM CST	Special Marine Warning	LOT		64 min
Feb 28, 11:20 PM CST	Special Weather Statement	LOT	Ford, Iroquois	25 min
Feb 28, 11:27 PM CST	River Flood Warning	LOT	Lake	5 days
Feb 28, 11:28 PM CST	River Flood Warning	LOT	Cook	31 hr
Feb 28, 11:34 PM CST	River Flood Advisory	LOT	Kane, Kendall	7 days
Feb 28, 11:38 PM CST	River Flood Advisory	LOT	Cook	36 hr
Mar 1, 12:21 AM CST	River Flood Warning	LOT	Will	27 hr
Mar 1, 12:21 AM CST	River Flood Warning	LOT	Bureau, LaSalle, Putnam	72 hr
Feb 28, 6:31 PM CST	Severe Thunderstorm Warning	LOT	Lake, Porter	59 min
Feb 28, 7:31 PM CST	Severe Thunderstorm Warning	LOT	Porter	29 min
Feb 28, 11:25 PM CST	River Flood Warning	LOT	Lake	29 hr
Feb 28, 11:32 PM CST	Severe Thunderstorm Warning	LOT	Jasper, Lake, Porter	28 min
Feb 28, 11:54 PM CST	Special Weather Statement	LOT	Jasper, Newton	36 min
Mar 1, 12:21 AM CST	River Flood Warning	LOT	Lake, Newton	32 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2017 Every severe thunderstorm warning in 2017

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.