Alert archive / Illinois / Special Weather Statements in 2016

Special Weather Statement, NWS Quad Cities, IA

July 28, 2016Hancock County, McDonough County, Illinois

NWS Quad Cities, IA issued this special weather statement at Jul 28, 2016, 1:17 PM CDT for Hancock County, McDonough County, Illinois. It was in force for 58 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: Jul 28, 2016, 1:17 PM CDT (18:17 UTC)
Expired: Jul 28, 2016, 2:15 PM CDT
In force: 58 min
Issued by: NWS Quad Cities, IA

Counties Hancock County, IL, McDonough County, IL

The radar

The Quad Cities radar (KDVN), 141 km from the middle of the area, began a volume at 18:17 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, 6.3 hours before the alert went out and 144 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: 262 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 1039 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 11 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 Jul 28, 12:39 PM CDT, 38 minutes earlier.

Area forecast discussion, Jul 28, 12:39 PM CDT, 38 minutes before

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Hazardous weather outlook, Jul 28, 10:48 AM CDT, 2 hours 29 minutes before

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In the hours before

Special weather statement, Jul 28, 12:04 PM CDT, 1 hour 13 minutes before

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Special weather statement, Jul 28, 12:06 PM CDT, 1 hour 11 minutes before

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Special weather statement, Jul 28, 12:59 PM CDT, 18 minutes before

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Special weather statement, Jul 28, 1:14 PM CDT, 3 minutes before

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Special weather statement, Jul 28, 1:17 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
Jul 28, 12:04 PM CDT	Special Weather Statement	DVN	Jo Daviess, Stephenson	116 min
Jul 28, 12:06 PM CDT	Special Weather Statement	DVN	Jo Daviess, Stephenson	114 min
Jul 28, 12:59 PM CDT	Special Weather Statement	DVN	Bureau, Carroll, Henry, Putnam, Whiteside	3 hr
Jul 28, 1:14 PM CDT	Special Weather Statement	DVN	Henry	46 min
Jul 28, 1:53 PM CDT	Special Weather Statement	DVN	Putnam	37 min
Jul 28, 2:53 PM CDT	Special Weather Statement	DVN	Stephenson	67 min
Jul 28, 2:58 PM CDT	Tornado Warning	DVN	Jo Daviess, Stephenson	32 min
Jul 28, 5:42 PM CDT	Special Weather Statement	DVN	Lee	48 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.