Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 4, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 27, 2016, 8:28 PM CDT for Wapello County, Iowa. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 27, 2016, 8:28 PM CDT (01:28 UTC)
- Expired
- May 28, 2016, 2:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Wapello County, IA
The radar
The Des Moines radar (KDMX), 144 km from the middle of the area, began a volume at 01:29 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, 1.5 hours before the alert went out and 164 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
- 296 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 989 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
893 WGUS53 KDMX 280128 FFWDMX IAC179-280730- /O.NEW.KDMX.FF.W.0004.160528T0128Z-160528T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 828 PM CDT FRI MAY 27 2016 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN WAPELLO COUNTY IN SOUTHEASTERN IOWA... * UNTIL 230 AM CDT SATURDAY * AT 827 PM 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... ELDON AND AGENCY. ADDITIONAL RAINFALL AMOUNTS AS MUCH AS 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. && LAT...LON 4090 9236 4116 9236 4116 9218 4090 9218 $$ ZOGG
3 follow-up statements
783 WGUS73 KDMX 280223 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 923 PM CDT FRI MAY 27 2016 IAC179-280730- /O.CON.KDMX.FF.W.0004.000000T0000Z-160528T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WAPELLO IA- 923 PM CDT FRI MAY 27 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT SATURDAY FOR EASTERN WAPELLO COUNTY... AT 920 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS WITH HEAVY RAIN HAD EXITED THE WARNED AREA...ADDITIONAL THUNDERSTORMS WITH HEAVY RAIN WERE APPROACHING FROM THE SOUTH. RAINFALL ESTIMATES INDICATE THAT AS MUCH AS 4 INCHES OF RAIN HAS ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY IF IT IS NOT ALREADY OCCURRING. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... ELDON AND AGENCY. ADDITIONAL RAINFALL AMOUNTS AS HIGH AS 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED AREA YET TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 4090 9236 4116 9236 4116 9218 4090 9218 $$ ZOGG
102 WGUS73 KDMX 280443 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1143 PM CDT FRI MAY 27 2016 IAC179-280730- /O.CON.KDMX.FF.W.0004.000000T0000Z-160528T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WAPELLO IA- 1143 PM CDT FRI MAY 27 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT SATURDAY FOR EASTERN WAPELLO COUNTY... AT 1141 PM CDT...DOPPLER RADAR INDICATED A RELATIVE LULL IN RAINFALL ACROSS THE WARNED AREA. ADDITIONAL RAINFALL WAS APPROACHING FROM THE SOUTH HOWEVER. RAINFALL ESTIMATES INDICATE THAT AS MUCH AS 3.5 TO 4.25 INCHES OF RAIN HAS ALREADY FALLEN. FLASH FLOODING IS LIKELY UNDERWAY. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... ELDON AND AGENCY. ADDITIONAL RAINFALL AMOUNTS OF 1 OR MORE INCHES ARE POSSIBLE IN THE WARNED AREA OVERNIGHT TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 4090 9236 4116 9236 4116 9218 4090 9218 $$ ZOGG
277 WGUS73 KDMX 280701 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 201 AM CDT SAT MAY 28 2016 IAC179-280709- /O.CAN.KDMX.FF.W.0004.000000T0000Z-160528T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WAPELLO IA- 201 AM CDT SAT MAY 28 2016 ...THE FLASH FLOOD WARNING FOR EASTERN WAPELLO COUNTY IS CANCELLED... THE HEAVY RAIN HAS ENDED. HOWEVER, ADDITIONAL LIGHT TO BRIEFLY MODERATE RAINFALL IS EXPECTED THIS MORNING BUT IS NOT EXPECTED TO CAUSE ANY FLASH FLOODING. THEREFORE, FLASH FLOODING NO LONGER POSES A THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LAT...LON 4090 9236 4116 9236 4116 9218 4090 9218 $$ PODRAZIK
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 7:36 PM CDT | Special Weather Statement | DMX | Wapello | 54 min |
| May 27, 7:53 PM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Cass, Clarke, Davis and 12 more | 8 hr |
Nearby
Flash Flood Warnings in Iowa, 2016Every flash flood warning in 2016
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.