Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 61, NWS Chicago, IL

May 24, 2011Jasper County, Indiana

NWS Chicago, IL issued this severe thunderstorm warning at May 24, 2011, 10:01 PM CDT for Jasper County, Indiana. It was in force for 44 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: May 24, 2011, 10:01 PM CDT (03:01 UTC)
Expired: May 24, 2011, 10:45 PM CDT
In force: 44 min
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Jasper County, IN

The radar

The Chicago radar (KLOT), 104 km from the middle of the area, began a volume at 03:04 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

Lincoln, IL (KILX), launched 00:00Z, 3.0 hours before the alert went out and 159 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: 375 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1724 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 44 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 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 May 24, 9:05 PM CDT, 56 minutes earlier.

Area forecast discussion, May 24, 9:05 PM CDT, 56 minutes before

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Hazardous weather outlook, May 24, 9:53 PM CDT, 8 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
May 25, 3:13 AM CDT	Small Craft Advisory	LOT		29 hr
May 25, 6:20 AM CDT	Special Weather Statement	LOT	DeKalb, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 3 more	40 min
May 25, 7:09 AM CDT	Special Weather Statement	LOT	Grundy, Iroquois, Kankakee, Kendall, LaSalle, Lee and 2 more	36 min
May 25, 7:49 AM CDT	Special Weather Statement	LOT	Boone, Cook, DeKalb, DuPage, Grundy, Kane and 7 more	41 min
May 25, 8:02 AM CDT	Special Marine Warning	LOT		118 min
May 25, 8:24 AM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Kankakee, Livingston	66 min
May 25, 8:59 AM CDT	Tornado Warning	LOT	Iroquois	21 min
May 25, 9:30 AM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Kankakee, Will	6 hr
May 25, 9:46 AM CDT	Small Craft Advisory	LOT		6 hr
May 25, 9:58 AM CDT	River Flood Watch	LOT	Iroquois	25 hr
May 25, 9:58 AM CDT	River Flood Watch	LOT	Iroquois	19 hr
May 25, 9:58 AM CDT	Special Marine Warning	LOT		65 min
May 25, 11:38 AM CDT	River Flood Watch	LOT	Bureau, LaSalle	11 hr
May 25, 1:57 PM CDT	Flash Flood Watch	LOT	DuPage, Ford, Grundy, Iroquois, Kane, Kankakee and 3 more	9 hr
May 25, 3:05 PM CDT	River Flood Advisory	LOT	Will	30 hr
May 25, 3:30 PM CDT	Special Marine Warning	LOT		30 min
May 25, 6:27 PM CDT	Tornado Warning	LOT	LaSalle, Livingston	24 min
May 24, 10:47 PM CDT	Special Weather Statement	LOT	Jasper	13 min
May 24, 11:09 PM CDT	Severe Thunderstorm Warning	LOT	Jasper	14 min
May 25, 9:58 AM CDT	River Flood Watch	LOT	Lake, Newton	12 hr
May 25, 9:58 AM CDT	River Flood Watch	LOT	Jasper	25 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2011 Every severe thunderstorm warning in 2011

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.