Alert archive / Illinois / Special Weather Statements in 2011

Special Weather Statement, NWS Quad Cities, IA

June 9, 2011Hancock County, Illinois; Clark County, Missouri

NWS Quad Cities, IA issued this special weather statement at Jun 9, 2011, 10:58 PM CDT for Hancock County, Illinois; Clark County, Missouri. It was in force for 107 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: Jun 9, 2011, 10:58 PM CDT (03:58 UTC)
Expired: Jun 10, 2011, 12:45 AM CDT
In force: 107 min
Issued by: NWS Quad Cities, IA

Counties Hancock County, IL, Clark County, MO

The radar

The Quad Cities radar (KDVN), 159 km from the middle of the area, began a volume at 03:58 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 00:00Z, 4.0 hours before the alert went out and 163 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 696 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 147 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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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 Jun 9, 3:22 PM CDT, 7 hours 36 minutes earlier.

Area forecast discussion, Jun 9, 3:22 PM CDT, 7 hours 36 minutes before

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Hazardous weather outlook, Jun 9, 3:50 PM CDT, 7 hours 8 minutes before

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In the hours before

Local storm report, Jun 9, 7:05 PM CDT, 3 hours 53 minutes before

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Special weather statement, Jun 9, 10:58 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
Jun 9, 11:13 PM CDT	Flash Flood Warning	DVN	Lee	6 hr
Jun 10, 2:26 AM CDT	Flash Flood Warning	DVN	Iowa, Johnson, Keokuk, Washington	5 hr
Jun 10, 4:07 AM CDT	Special Weather Statement	DVN	Clinton, Louisa, Muscatine, Scott	113 min
Jun 10, 6:21 AM CDT	River Flood Warning	DVN	Keokuk	8 days
Jun 10, 6:53 AM CDT	River Flood Warning	DVN	Johnson, Washington	59 hr
Jun 10, 9:04 AM CDT	River Flood Warning	DVN	Iowa, Johnson	5 days
Jun 10, 10:40 AM CDT	River Flood Warning	DVN	Des Moines	9 days
Jun 10, 10:40 AM CDT	River Flood Warning	DVN	Des Moines, Lee	9 days
Jun 10, 10:40 AM CDT	River Flood Warning	DVN	Johnson, Louisa, Washington	24 hr
Jun 10, 4:51 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	39 min
Jun 10, 5:29 PM CDT	Severe Thunderstorm Warning	DVN	Lee	61 min
Jun 10, 4:51 AM CDT	Special Weather Statement	DVN	Bureau, Henry, Whiteside	84 min
Jun 10, 6:31 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, McDonough	59 min

Nearby

Special Weather Statements in Illinois, 2011 Special Weather Statements in Missouri, 2011 Every special weather statement 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.