Alert archive / Iowa / Flash Flood Watches in 2019
Flash Flood Watch 15, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood watch at Sep 29, 2019, 4:53 AM CDT for 11 counties in Iowa. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Sep 29, 2019, 4:53 AM CDT (09:53 UTC)
- Expired
- Sep 29, 2019, 3:47 PM CDT
- In force
- 11 hr
- Issued by
- NWS Des Moines, IA
- Flood severity
- None
Counties Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Lucas County, IA, Monroe County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 98 km from the middle of the area, began a volume at 09:56 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, 9.9 hours before the alert went out and 260 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
- 903 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 279 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 Sep 29, 4:13 AM CDT, 40 minutes earlier.
Area forecast discussion, Sep 29, 4:13 AM CDT, 40 minutes before
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 7:15 PM CDT | Special Weather Statement | DMX | Davis | 45 min |
| Sep 28, 7:32 PM CDT | Special Weather Statement | DMX | Appanoose, Davis, Monroe, Wapello | 58 min |
| Sep 28, 7:48 PM CDT | Flash Flood Warning | DMX | Appanoose, Davis, Monroe, Wapello, Wayne | 3 hr |
| Sep 29, 7:51 AM CDT | Flash Flood Warning | DMX | Appanoose, Decatur, Wayne | 9 hr |
| Sep 29, 4:24 PM CDT | Special Weather Statement | DMX | Pocahontas | 51 min |
| Sep 29, 4:30 PM CDT | Areal Flood Warning | DMX | Decatur | 21 hr |
| Sep 29, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Pocahontas, Webster | 45 min |
| Sep 29, 4:34 PM CDT | Areal Flood Warning | DMX | Appanoose | 21 hr |
| Sep 29, 5:11 PM CDT | Special Weather Statement | DMX | Wright | 49 min |
Nearby
Flash Flood Watches in Iowa, 2019Every flash flood watch in 2019
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.