Alert archive / Iowa / Special Weather Statements in 2013

Special Weather Statement, NWS Quad Cities, IA

May 28, 2013Des Moines County, Henry County, Iowa; Warren County, Illinois

NWS Quad Cities, IA issued this special weather statement at May 28, 2013, 6:45 AM CDT for Des Moines County, Henry County, Iowa; Warren County, Illinois. It was in force for 60 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 28, 2013, 6:45 AM CDT (11:45 UTC)
Expired: May 28, 2013, 7:45 AM CDT
In force: 60 min
Issued by: NWS Quad Cities, IA

Counties Des Moines County, IA, Henry County, IA, Warren County, IL

The radar

The Quad Cities radar (KDVN), 72 km from the middle of the area, began a volume at 11:45 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, 11.8 hours before the alert went out and 76 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: 95 J/kg
Mixed-layer CIN: -159 J/kg
Mixed-layer LCL: 671 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 261 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 May 28, 6:39 AM CDT, 6 minutes earlier.

Area forecast discussion, May 28, 6:39 AM CDT, 6 minutes before

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Hazardous weather outlook, May 28, 4:31 AM CDT, 2 hours 14 minutes before

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In the hours before

Special weather statement, May 28, 1:14 AM CDT, 5 hours 31 minutes before

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Special weather statement, May 28, 2:24 AM CDT, 4 hours 21 minutes before

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Special weather statement, May 28, 3:36 AM CDT, 3 hours 9 minutes before

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Special weather statement, May 28, 5:58 AM CDT, 47 minutes before

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Local storm report, May 28, 6:08 AM CDT, 37 minutes before

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Special weather statement, May 28, 6:45 AM 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 27, 9:33 PM CDT	River Flood Warning	DVN	Johnson, Washington	5 days
May 28, 1:14 AM CDT	Special Weather Statement	DVN	Benton, Buchanan, Cedar, Delaware, Iowa, Johnson and 2 more	91 min
May 28, 2:24 AM CDT	Special Weather Statement	DVN	Lee, Van Buren	66 min
May 28, 3:36 AM CDT	Special Weather Statement	DVN	Benton, Buchanan, Delaware, Dubuque, Iowa, Johnson and 2 more	54 min
May 28, 5:58 AM CDT	Special Weather Statement	DVN	Henry, Jefferson, Keokuk, Washington	47 min
May 28, 10:53 AM CDT	Flash Flood Watch	DVN	Cedar, Clinton, Des Moines, Henry, Iowa, Jefferson and 8 more	19 hr
May 28, 5:02 PM CDT	Special Weather Statement	DVN	Keokuk	28 min
May 28, 5:22 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Washington	38 min
May 28, 6:20 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Louisa	40 min
May 28, 6:22 PM CDT	Flash Flood Warning	DVN	Des Moines	10 hr
May 28, 6:57 PM CDT	Flash Flood Warning	DVN	Henry, Jefferson, Keokuk, Washington	9 hr
May 28, 4:50 PM CDT	Special Weather Statement	DVN	Mercer	25 min
May 28, 5:32 PM CDT	Severe Thunderstorm Warning	DVN	Warren	43 min
May 28, 6:46 PM CDT	Special Weather Statement	DVN	Henry	44 min

Nearby

Special Weather Statements in Iowa, 2013 Special Weather Statements in Illinois, 2013 Every special weather statement in 2013

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.