Alert archive / Iowa / Flash Flood Watches in 2006
Flash Flood Watch 1, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood watch at Aug 1, 2006, 4:19 AM CDT for 13 counties in Iowa. It took effect at Aug 1, 2006, 3:41 PM CDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Aug 1, 2006, 4:19 AM CDT (09:19 UTC)
- In effect from
- Aug 1, 2006, 3:41 PM CDT
- Expired
- Aug 2, 2006, 7:00 AM CDT
- In force
- 15 hr
- Issued by
- NWS Des Moines, IA
- Flood severity
- None
Counties Calhoun County, IA, Cerro Gordo County, IA, Emmet County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 138 km from the middle of the area, began a volume at 09:20 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
Minneapolis, MN (KMPX), launched 00:00Z, 9.3 hours before the alert went out and 219 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.
- Mixed-layer CAPE
- 4090 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 1499 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Des Moines, IA wrote its last area forecast discussion before this flash flood watch went out at Aug 1, 4:01 AM CDT, 18 minutes earlier.
Area forecast discussion, Aug 1, 4:01 AM CDT, 18 minutes before
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</html>Hazardous weather outlook, Jul 31, 9:54 PM CDT, 6 hours 25 minutes before
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Flash Flood Watches in Iowa, 2006Every flash flood watch in 2006
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.