Alert archive / Illinois / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 36, NWS Lincoln, IL

May 13, 20104 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 13, 2010, 6:57 AM CDT for 4 counties in Illinois. It was in force for 43 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 13, 2010, 6:57 AM CDT (11:57 UTC)
Expired: May 13, 2010, 7:40 AM CDT
In force: 43 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Logan County, IL, Mason County, IL, Menard County, IL, Tazewell County, IL

The radar

The Lincoln radar (KILX), 28 km from the middle of the area, began a volume at 11:57 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
May 13, 6:53 AM CDT	Severe Thunderstorm Watch	SPC	2 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 12.0 hours before the alert went out and 171 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: 1 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 452 m²/s²
0-3 km storm-relative helicity: 677 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 13, 6:15 AM CDT, 42 minutes earlier.

Area forecast discussion, May 13, 6:15 AM CDT, 42 minutes before

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Hazardous weather outlook, May 13, 6:00 AM CDT, 57 minutes before

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In the hours before

Local storm report, May 13, 5:59 AM CDT, 58 minutes before

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Local storm report, May 13, 6:12 AM CDT, 45 minutes before

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Local storm report, May 13, 6:27 AM CDT, 30 minutes before

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Local storm report, May 13, 6:34 AM CDT, 23 minutes before

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Local storm report, May 13, 6:42 AM CDT, 15 minutes before

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Local storm report, May 13, 6:43 AM CDT, 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 9:42 PM CDT	Special Weather Statement	ILX	Marshall	48 min
May 13, 12:28 AM CDT	Special Weather Statement	ILX	Knox	47 min
May 13, 1:36 AM CDT	Special Weather Statement	ILX	Knox, Stark	54 min
May 13, 3:52 AM CDT	Flash Flood Warning	ILX	Fulton, Knox, Peoria, Stark	4 hr
May 13, 6:17 AM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard, Morgan, Sangamon, Scott	43 min
May 13, 7:28 AM CDT	Severe Thunderstorm Warning	ILX	McLean, Marshall, Tazewell, Woodford	32 min
May 13, 7:53 AM CDT	Areal Flood Warning	ILX	Fulton, Knox, Marshall, Peoria, Stark	6 hr
May 13, 8:09 AM CDT	Special Weather Statement	ILX	McLean	36 min
May 13, 8:41 AM CDT	River Flood Warning	ILX	Fulton, Knox	5 days
May 13, 11:34 AM CDT	River Flood Warning	ILX	Fulton	6 days
May 13, 11:41 AM CDT	River Flood Warning	ILX	Fulton, Mason	67 days
May 13, 11:41 AM CDT	River Flood Warning	ILX	Brown, Cass, Morgan, Schuyler	84 days

Nearby

Severe Thunderstorm Warnings in Illinois, 2010 Every severe thunderstorm warning in 2010

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.