Alert archive / Iowa / Flash Flood Warnings in 2018
Flash Flood Warning 4, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jun 9, 2018, 7:00 AM CDT for Jackson County, Iowa. It was in force for 3 hr. 2 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 9, 2018, 7:00 AM CDT (12:00 UTC)
- Expired
- Jun 9, 2018, 10:22 AM CDT
- In force
- 3 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Jackson County, IA
The radar
The Quad Cities radar (KDVN), 66 km from the middle of the area, began a volume at 12:04 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 9, 7:15 AM CDT | HEAVY RAIN 1.74 | 1 Wnw Fulton, IA | 24-HR RAINFALL TOTAL. |
| Jun 9, 7:30 AM CDT | FLASH FLOOD | 3 Nne Fulton, IA | 175TH AVE CLOSED AS A CREEK FLOWED OVER THE ROADWAY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 0.0 hours before the alert went out and 66 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
- 298 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1110 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.3
The text
As transmitted.
470 WGUS53 KDVN 091200 FFWDVN IAC097-091800- /O.NEW.KDVN.FF.W.0004.180609T1200Z-180609T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Quad Cities IA/IL 700 AM CDT SAT JUN 9 2018 The National Weather Service in the Quad Cities has issued a * Flash Flood Warning for... Southwestern Jackson County in east central Iowa... * Until 100 PM CDT Saturday. * At 658 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to three inches of rain have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Andrew, Fulton, Hurstville and Otter Creek. Additional rainfall amounts of one inch or more are possible in the warned area over the next hour. LAT...LON 4227 9064 4209 9049 4209 9072 4228 9076 $$ Sheets
2 follow-up statements
443 WGUS73 KDVN 091310 FFSDVN Flash Flood Statement National Weather Service Quad Cities IA/IL 810 AM CDT SAT JUN 9 2018 IAC097-091800- /O.CON.KDVN.FF.W.0004.000000T0000Z-180609T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Jackson IA- 810 AM CDT SAT JUN 9 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 100 PM CDT FOR SOUTHWESTERN JACKSON COUNTY... At 809 AM CDT, Doppler radar indicated the heavy rain threat was diminishing across the warned area. However, five inches or more of rain have already fallen. Flash flooding is likely ongoing. Some locations that will experience flooding include... Andrew, Fulton, Hurstville and Otter Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 4227 9064 4209 9049 4209 9072 4228 9076 $$ RP Kinney
138 WGUS73 KDVN 091522 FFSDVN Flash Flood Statement National Weather Service Quad Cities IA/IL 1022 AM CDT SAT JUN 9 2018 IAC097-091529- /O.CAN.KDVN.FF.W.0004.000000T0000Z-180609T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Jackson IA- 1022 AM CDT SAT JUN 9 2018 ...THE FLASH FLOOD WARNING FOR SOUTHWESTERN JACKSON COUNTY IS CANCELLED... The heavy rain has ended. While some creeks may still be flowing out of their banks, law enforcement reports that flood waters are receding rapidly. Additional flooding is no longer expected to pose a threat at this time. Please continue to heed any remaining road closures. LAT...LON 4227 9064 4209 9049 4209 9072 4228 9076 $$ Brooks
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 10:11 PM CDT | Special Weather Statement | DVN | Muscatine | 64 min |
| Jun 8, 11:00 PM CDT | Special Weather Statement | DVN | Cedar | 60 min |
| Jun 8, 11:01 PM CDT | Special Weather Statement | DVN | Scott | 59 min |
| Jun 9, 2:18 AM CDT | Special Weather Statement | DVN | Clinton, Jackson | 27 min |
| Jun 9, 4:21 AM CDT | Flash Flood Warning | DVN | Clinton, Jackson | 6 hr |
| Jun 9, 4:28 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 47 min |
| Jun 9, 5:03 AM CDT | Special Weather Statement | DVN | Jackson | 42 min |
| Jun 9, 6:39 AM CDT | Special Weather Statement | DVN | Johnson | 51 min |
| Jun 9, 7:23 AM CDT | Special Weather Statement | DVN | Johnson | 37 min |
| Jun 9, 7:57 AM CDT | Special Weather Statement | DVN | Washington | 48 min |
| Jun 9, 8:02 AM CDT | Special Weather Statement | DVN | Johnson | 43 min |
| Jun 9, 8:18 AM CDT | Special Weather Statement | DVN | Henry | 42 min |
| Jun 9, 8:39 AM CDT | Flash Flood Warning | DVN | Linn | 2 hr |
| Jun 9, 8:41 AM CDT | Special Weather Statement | DVN | Linn | 49 min |
| Jun 9, 8:47 AM CDT | Severe Thunderstorm Warning | DVN | Johnson, Linn | 42 min |
| Jun 9, 9:12 AM CDT | Special Weather Statement | DVN | Henry | 48 min |
| Jun 9, 9:32 AM CDT | Special Weather Statement | DVN | Delaware, Johnson, Jones | 43 min |
| Jun 9, 9:57 AM CDT | Special Weather Statement | DVN | Des Moines, Henry | 48 min |
| Jun 9, 3:01 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more | 16 hr |
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.