Alert archive / Iowa / River Flood Watches in 2018
River Flood Watch 41, NWS Des Moines, IA
NWS Des Moines, IA issued this river flood watch at Sep 4, 2018, 9:34 AM CDT for Black Hawk County, Bremer County, Butler County, Iowa. It took effect at Sep 5, 2018, 2:12 PM CDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Sep 4, 2018, 9:34 AM CDT (14:34 UTC)
- In effect from
- Sep 5, 2018, 2:12 PM CDT
- Expired
- Sep 5, 2018, 10:18 AM CDT
- In force
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Black Hawk County, IA, Bremer County, IA, Butler County, IA
The radar
The Des Moines radar (KDMX), 146 km from the middle of the area, began a volume at 14:34 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 river
Written for the forecast point Shell Rock River at Shell Rock (SHRI4). The gauge peaked at 14.48 ft at Sep 6, 2018, 10:00 AM CDT.
- Action stage
- 10 ft
- Minor stage
- 12 ft
- Moderate stage
- 16 ft
- Major stage
- 18 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05462000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
What forecasters said that day
The local office's own words before this river 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 river flood watch went out at Sep 4, 6:30 AM CDT, 3 hours 4 minutes earlier.
Area forecast discussion, Sep 4, 6:30 AM CDT, 3 hours 4 minutes before
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</html>Hazardous weather outlook, Sep 4, 3:59 AM CDT, 5 hours 35 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 359 AM CDT Tue Sep 4 2018 IAZ004>007-015>017-023>028-033>039-047>050-059>062-051000- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Boone-Story-Marshall- Tama-Dallas-Polk-Jasper-Poweshiek- 359 AM CDT Tue Sep 4 2018 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight A Flash Flood Watch is in effect for the area today through late tonight. Also, river flooding warnings are in effect for portions of the Cedar River and Iowa River basins. Please refer to the National Weather Service website at weather.gov/desmoines for further details. Widespread thunderstorms are forecast by around midday today and look to continue through late tonight into early Wednesday morning. Heavy rain at times may lead to localized flash flooding. There is also the potential for a few strong to potentially severe storms with the threat of large hail, damaging wind and a tornado or two. .DAYS TWO THROUGH SEVEN...Wednesday through Monday The very active weather pattern persist throughout the rest of the work week and into the weekend. Heavy rain potential continues to be the main concern and with many swollen rivers and streams as well as very saturated grounds, this combination may lead to additional river flooding and flash flooding Wednesday through Saturday. .SPOTTER INFORMATION STATEMENT... Spotters might be needed today into tonight for flash flood and severe weather potential. Spotters may also be needed at times throughout the rest of the week. IAZ044>046-057-058-070>075-081>086-092>097-051000- Crawford-Carroll-Greene-Audubon-Guthrie-Cass-Adair-Madison-Warren- Marion-Mahaska-Adams-Union-Clarke-Lucas-Monroe-Wapello-Taylor- Ringgold-Decatur-Wayne-Appanoose-Davis- 359 AM CDT Tue Sep 4 2018 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Isolated to scattered thunderstorms are possible today into tonight. Although the severe weather threat is low, a brief stronger storms with hail and gusty winds cannot be ruled out. Localized heavy rain is also possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday The very active weather pattern persist throughout the rest of the work week and into the weekend. Heavy rain potential continues to be the main concern and with many swollen rivers and streams as well as very saturated grounds, this combination may lead to river flooding and flash flooding at times Wednesday through Saturday. .SPOTTER INFORMATION STATEMENT... Spotters might be needed today into tonight and at times through the rest of the week. KLP
In the hours before
Special weather statement, Sep 4, 4:07 AM CDT, 5 hours 27 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 3, 7:32 PM CDT | Special Weather Statement | DMX | Black Hawk, Bremer, Grundy | 88 min |
| Sep 3, 7:43 PM CDT | Flash Flood Warning | DMX | Black Hawk | 3 hr |
| Sep 4, 3:33 AM CDT | Flash Flood Watch | DMX | Black Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo and 22 more | 27 hr |
| Sep 4, 9:34 AM CDT | River Flood Watch | DMX | Cerro Gordo, Floyd, Worth | 13 hr |
| Sep 4, 2:21 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 14 min |
| Sep 4, 3:46 PM CDT | Tornado Warning | DMX | Kossuth | 29 min |
| Sep 4, 4:45 PM CDT | Tornado Warning | DMX | Hancock, Winnebago | 30 min |
| Sep 4, 5:09 PM CDT | Flash Flood Warning | DMX | Hancock, Kossuth, Winnebago | 6 hr |
Nearby
River Flood Watches in Iowa, 2018Every river flood watch in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.