Alert archive / Iowa / Flash Flood Watches in 2013

Flash Flood Watch 6, NWS Quad Cities, IA

June 23, 201319 counties in Iowa; 11 counties in Illinois

NWS Quad Cities, IA issued this flash flood watch at Jun 23, 2013, 3:57 AM CDT for 19 counties in Iowa; 11 counties in Illinois. It took effect at Jun 23, 2013, 7:00 PM CDT. It was in force for 60 hr.

The area

The counties it named.

The facts

Issued: Jun 23, 2013, 3:57 AM CDT (08:57 UTC)
In effect from: Jun 23, 2013, 7:00 PM CDT
Expired: Jun 26, 2013, 7:00 AM CDT
In force: 60 hr
Issued by: NWS Quad Cities, IA
Flood severity: None

All 30 counties

Benton County, IA, Buchanan County, IA, Cedar County, IA, Clinton County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Washington County, IA, Bureau County, IL, Carroll County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Mercer County, IL, Putnam County, IL, Rock Island County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 29 km from the middle of the area, began a volume at 08:59 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, 9.0 hours before the alert went out and 36 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: 2548 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1426 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 22, 11:59 PM CDT, 3 hours 58 minutes earlier.

Area forecast discussion, Jun 22, 11:59 PM CDT, 3 hours 58 minutes before

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Hazardous weather outlook, Jun 22, 5:17 PM CDT, 10 hours 40 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 23, 11:19 AM CDT	Special Weather Statement	DVN	Cedar, Jefferson, Johnson, Jones, Van Buren, Washington	56 min
Jun 23, 11:47 AM CDT	Special Weather Statement	DVN	Cedar, Dubuque, Henry, Jackson, Jones, Louisa and 2 more	58 min
Jun 23, 12:30 PM CDT	Special Weather Statement	DVN	Lee	60 min
Jun 23, 12:32 PM CDT	Special Weather Statement	DVN	Lee	58 min
Jun 23, 1:02 PM CDT	Special Weather Statement	DVN	Hancock	58 min
Jun 23, 1:26 PM CDT	Special Weather Statement	DVN	Carroll, Hancock, Henry, McDonough, Stephenson, Warren and 1 more	64 min
Jun 23, 2:16 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry, Whiteside	44 min
Jun 23, 3:29 PM CDT	Special Weather Statement	DVN	Putnam	61 min
Jun 23, 4:00 PM CDT	Special Weather Statement	DVN	Putnam	60 min
Jun 23, 4:16 PM CDT	Special Weather Statement	DVN	Putnam	59 min
Jun 23, 4:29 PM CDT	Special Weather Statement	DVN	Putnam	61 min

Nearby

Flash Flood Watches in Iowa, 2013 Flash Flood Watches in Illinois, 2013 Every flash flood watch 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.