Alert archive / Illinois / Special Weather Statements in 2010

Special Weather Statement, NWS Quad Cities, IA

May 31, 20104 counties in Illinois

NWS Quad Cities, IA issued this special weather statement at May 31, 2010, 7:21 AM CDT for 4 counties in Illinois. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 31, 2010, 7:21 AM CDT (12:21 UTC)
Expired: May 31, 2010, 8:15 AM CDT
In force: 54 min
Issued by: NWS Quad Cities, IA

Counties Hancock County, IL, Henderson County, IL, McDonough County, IL, Warren County, IL

The radar

The Quad Cities radar (KDVN), 144 km from the middle of the area, began a volume at 12:21 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

Lincoln, IL (KILX), launched 12:00Z, 0.4 hours before the alert went out and 210 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: 1612 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1020 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 7:42 PM CDT	Special Weather Statement	DVN	Buchanan	63 min
May 31, 2:59 AM CDT	Special Weather Statement	DVN	Lee	61 min
May 31, 8:50 AM CDT	Special Weather Statement	DVN	Des Moines	55 min
May 31, 9:22 AM CDT	Special Weather Statement	DVN	Henry, Mercer	53 min
May 31, 9:52 AM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry	38 min
May 31, 10:56 AM CDT	Special Weather Statement	DVN	Bureau	34 min

Nearby

Special Weather Statements in Illinois, 2010 Every special weather statement 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.