Alert archive / Illinois / Special Weather Statements in 2016

Special Weather Statement, NWS Quad Cities, IA

May 25, 2016Whiteside County, Illinois

NWS Quad Cities, IA issued this special weather statement at May 25, 2016, 2:39 PM CDT for Whiteside County, Illinois. It was in force for 66 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 25, 2016, 2:39 PM CDT (19:39 UTC)
Expired: May 25, 2016, 3:45 PM CDT
In force: 66 min
Issued by: NWS Quad Cities, IA

County Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 74 km from the middle of the area, began a volume at 19:42 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

Davenport, (KDVN), launched 12:00Z, 7.7 hours before the alert went out and 68 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: 31 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1220 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this special weather statement went out at May 25, 1:06 PM CDT, 1 hour 33 minutes earlier.

Area forecast discussion, May 25, 1:06 PM CDT, 1 hour 33 minutes before

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Hazardous weather outlook, May 25, 4:22 AM CDT, 10 hours 17 minutes before

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In the hours before

Local storm report, May 25, 10:46 AM CDT, 3 hours 53 minutes before

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Local storm report, May 25, 10:50 AM CDT, 3 hours 49 minutes before

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Special weather statement, May 25, 2:39 PM CDT, 0 minutes before

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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 25, 7:46 AM CDT	Special Weather Statement	DVN	Benton, Iowa	59 min
May 25, 8:08 AM CDT	Special Weather Statement	DVN	Cedar	52 min
May 25, 4:42 PM CDT	Special Weather Statement	DVN	Putnam	48 min
May 25, 5:49 PM CDT	Special Weather Statement	DVN	Stephenson	26 min

Nearby

Special Weather Statements in Illinois, 2016 Every special weather statement in 2016

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.