Alert archive / Iowa / Flash Flood Warnings in 2018
Flash Flood Warning 4, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 11, 2018, 5:00 AM CDT for Palo Alto County, Iowa. It was in force for 6 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 11, 2018, 5:00 AM CDT (10:00 UTC)
- Expired
- Jun 11, 2018, 11:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Palo Alto County, IA
The radar
The Sioux Falls radar (KFSD), 167 km from the middle of the area, began a volume at 10:01 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 9:00 AM CDT | HEAVY RAIN 2.2 | 2 N Ruthven, IA | NEAR LOST ISLAND LAKE. PUBLIC REPORT VIA KICD RADIO. |
| Jun 11, 9:00 AM CDT | HEAVY RAIN 4 | 7 N Ruthven, IA | PUBLIC REPORT VIA KICD RADIO. |
| Jun 11, 9:00 AM CDT | HEAVY RAIN 4.5 | 6 N Ruthven, IA | PUBLIC REPORT VIA KICD RADIO. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 10.0 hours before the alert went out and 209 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
- 1 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 931 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -78 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
248 WGUS53 KDMX 111000 FFWDMX IAC147-111600- /O.NEW.KDMX.FF.W.0004.180611T1000Z-180611T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Des Moines IA 500 AM CDT MON JUN 11 2018 The National Weather Service in Des Moines has issued a * Flash Flood Warning for... Northwestern Palo Alto County in northwestern Iowa... * Until 1100 AM CDT Monday. * At 459 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Three inches of rain or more have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Emmetsburg, Silver Lake, Lost Island Lake, Five Island Lake, Graettinger, Ruthven, Ayrshire, Kearney State Park, Emmetsburg Municipal Airport and Lost Island Lake State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. If driving, be prepared for water over the roadways. && LAT...LON 4325 9462 4303 9466 4303 9491 4326 9491 $$ Donavon
2 follow-up statements
809 WGUS73 KDMX 111332 FFSDMX Flash Flood Statement National Weather Service Des Moines IA 832 AM CDT MON JUN 11 2018 IAC147-111600- /O.CON.KDMX.FF.W.0004.000000T0000Z-180611T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Palo Alto IA- 832 AM CDT MON JUN 11 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR NORTHWESTERN PALO ALTO COUNTY... Overnight, doppler radar indicated thunderstorms producing heavy rain across the warned area. Three inches or more of rain have already fallen. Some locations that will experience flooding include... Emmetsburg, Silver Lake, Lost Island Lake, Five Island Lake, Graettinger, Ruthven, Ayrshire, Kearney State Park, Emmetsburg Municipal Airport and Lost Island Lake State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. && LAT...LON 4325 9462 4303 9466 4303 9491 4326 9491 $$ Hagenhoff
405 WGUS73 KDMX 111601 FFSDMX Flash Flood Statement National Weather Service Des Moines IA 1101 AM CDT MON JUN 11 2018 IAC147-111610- /O.EXP.KDMX.FF.W.0004.000000T0000Z-180611T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Palo Alto IA- 1101 AM CDT MON JUN 11 2018 ...THE FLASH FLOOD WARNING FOR NORTHWESTERN PALO ALTO COUNTY HAS EXPIRED... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 4325 9462 4303 9466 4303 9491 4326 9491 $$ Hagenhoff
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:23 PM CDT | Special Weather Statement | DMX | Warren | 52 min |
| Jun 10, 8:34 PM CDT | Special Weather Statement | DMX | Dallas | 41 min |
| Jun 10, 9:04 PM CDT | Special Weather Statement | DMX | Warren | 41 min |
| Jun 10, 9:08 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 37 min |
| Jun 10, 9:25 PM CDT | Special Weather Statement | DMX | Dallas | 50 min |
| Jun 10, 9:43 PM CDT | Special Weather Statement | DMX | Polk | 47 min |
| Jun 10, 9:53 PM CDT | Flash Flood Watch | DMX | Appanoose, Boone, Clarke, Dallas, Decatur, Greene and 11 more | 10 hr |
| Jun 10, 10:00 PM CDT | Special Weather Statement | DMX | Lucas | 60 min |
| Jun 10, 10:24 PM CDT | Special Weather Statement | DMX | Boone, Clarke, Dallas, Greene, Lucas, Madison and 2 more | 51 min |
| Jun 11, 12:04 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur | 41 min |
| Jun 11, 12:21 AM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Union | 39 min |
| Jun 11, 12:43 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 62 min |
| Jun 11, 1:37 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 42 min |
| Jun 11, 1:45 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 30 min |
| Jun 11, 3:13 AM CDT | Special Weather Statement | DMX | Pocahontas | 47 min |
| Jun 11, 3:17 AM CDT | Special Weather Statement | DMX | Union | 43 min |
| Jun 11, 3:20 AM CDT | Special Weather Statement | DMX | Adair, Cass | 40 min |
| Jun 11, 3:33 AM CDT | Special Weather Statement | DMX | Audubon | 42 min |
| Jun 11, 3:42 AM CDT | Special Weather Statement | DMX | Palo Alto | 63 min |
| Jun 11, 4:08 AM CDT | Special Weather Statement | DMX | Pocahontas | 52 min |
| Jun 11, 4:45 AM CDT | Special Weather Statement | DMX | Palo Alto | 45 min |
| Jun 11, 5:32 AM CDT | Flash Flood Warning | DMX | Audubon, Cass | 6 hr |
| Jun 11, 6:41 AM CDT | Special Weather Statement | DMX | Emmet | 49 min |
| Jun 11, 7:39 AM CDT | Special Weather Statement | DMX | Boone, Hamilton, Jasper, Marshall, Polk, Story | 3 hr |
| Jun 11, 11:10 AM CDT | Special Weather Statement | DMX | Audubon | 35 min |
| Jun 11, 11:14 AM CDT | Special Weather Statement | DMX | Cass | 31 min |
| Jun 11, 11:50 AM CDT | Special Weather Statement | DMX | Adair | 25 min |
| Jun 11, 11:53 AM CDT | Special Weather Statement | DMX | Adams | 37 min |
| Jun 11, 6:11 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 32 min |
Nearby
Flash Flood Warnings in Iowa, 2018Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.