Alert archive / Iowa / Flood Watches in 2009
Flood Watch 1, NWS Des Moines, IA
NWS Des Moines, IA issued this flood watch at Nov 16, 2009, 3:34 AM CST for 8 counties in Iowa. It took effect at Nov 16, 2009, 12:00 PM CST. It was in force for 22 hr.
The area
The counties it named.
The facts
- Issued
- Nov 16, 2009, 3:34 AM CST (09:34 UTC)
- In effect from
- Nov 16, 2009, 12:00 PM CST
- Expired
- Nov 17, 2009, 10:13 AM CST
- In force
- 22 hr
- Issued by
- NWS Des Moines, IA
- Flood severity
- None
Counties Appanoose County, IA, Davis County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Wapello County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 108 km from the middle of the area, began a volume at 09:37 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
Topeka, KS (KTOP), launched 00:00Z, 9.6 hours before the alert went out and 324 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 384 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 16, 3:35 AM CST | Winter Weather Advisory | DMX | Adams, Ringgold, Taylor, Union | 17 hr |
Nearby
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.