Alert archive / Iowa / Flash Flood Warnings in 2019

Flash Flood Warning 13, NWS Des Moines, IA

June 25, 2019Adams County, Cass County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 25, 2019, 11:05 PM CDT for Adams County, Cass County, Iowa. It was in force for 6 hr. 1 report 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 25, 2019, 11:05 PM CDT (04:05 UTC)
Expired
Jun 26, 2019, 5:00 AM CDT
In force
6 hr
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Flood severity
None

Counties Adams County, IA, Cass County, IA

The radar

The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 04:03 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

TimeReportWhereRemark
Jun 26, 12:34 AM CDTFLASH FLOODPrescott, IARUNNING WATER OVER SEVERAL ROADS NEAR PRESCOTT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 4.1 hours before the alert went out and 140 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2019-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 354 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2019-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
354 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
1816 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
324 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.8

Open this sounding in Storm Lab

The text

As transmitted.

485 
WGUS53 KDMX 260405
FFWDMX
IAC003-029-261000-
/O.NEW.KDMX.FF.W.0013.190626T0405Z-190626T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Des Moines IA
1105 PM CDT Tue Jun 25 2019

The National Weather Service in Des Moines  has issued a

* Flash Flood Warning for...
  Southeastern Cass County in southwestern Iowa...
  Northern Adams County in southwestern Iowa...

* Until 500 AM CDT.

* At 1104 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...
  Lake Icaria, Prescott and Lake Icaria State Park. 

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area over the next two hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 4111 9493 4123 9493 4118 9470 4116 9470
      4116 9460 4113 9447 4098 9447

$$

REV
3 follow-up statements
547 
WGUS73 KDMX 260541
FFSDMX

Flash Flood Statement
National Weather Service Des Moines IA
1241 AM CDT Wed Jun 26 2019

IAC003-029-261000-
/O.CON.KDMX.FF.W.0013.000000T0000Z-190626T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cass IA-Adams IA-
1241 AM CDT Wed Jun 26 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN CASS AND NORTHERN ADAMS COUNTIES...

At 1238 AM CDT, local law enforcement reported flash flooding in 
Adams County with water over the roads near Prescott. Up to 3 to 6 
inches of rain have fallen in the warned area with the heaviest 
rainfall totals over northern and eastern Adams County. Flash 
flooding is already occurring.

Some locations that will experience flooding include...
Lake Icaria, Prescott and Lake Icaria State Park. 

Additional rainfall amounts of an inch is possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 4111 9493 4123 9493 4118 9470 4116 9470
      4116 9460 4113 9447 4098 9447

$$

REV
475 
WGUS73 KDMX 260838
FFSDMX

Flash Flood Statement
National Weather Service Des Moines IA
338 AM CDT Wed Jun 26 2019

IAC003-029-261000-
/O.CON.KDMX.FF.W.0013.000000T0000Z-190626T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cass IA-Adams IA-
338 AM CDT Wed Jun 26 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN CASS AND NORTHERN ADAMS COUNTIES...

At 335 AM CDT, areas of flash flooding likely continue within the 
warning area. Although the rain has ended, radar estimates of 4 to 6 
inches of rain in the warning area.  While conditions have improved 
in some areas, it is likely that other gravel and secondary roads 
are still impacted by high water, especially to the north and east 
of Prescott.  

Some locations that will experience flooding include...
Lake Icaria, Prescott and Lake Icaria State Park. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 4111 9493 4123 9493 4118 9470 4116 9470
      4116 9460 4113 9447 4098 9447

$$

Cogil
082 
WGUS73 KDMX 260958
FFSDMX

Flash Flood Statement
National Weather Service Des Moines IA
458 AM CDT Wed Jun 26 2019

IAC003-029-261008-
/O.EXP.KDMX.FF.W.0013.000000T0000Z-190626T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cass IA-Adams IA-
458 AM CDT Wed Jun 26 2019

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN CASS AND NORTHERN ADAMS
COUNTIES WILL EXPIRE AT 500 AM CDT...

Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.

LAT...LON 4111 9493 4123 9493 4118 9470 4116 9470
      4116 9460 4113 9447 4098 9447

$$

Cogil

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 7:26 PM CDTSevere Thunderstorm WarningDMXAppanoose, Wayne19 min
Jun 25, 7:49 PM CDTSpecial Weather StatementDMXDavis41 min
Jun 25, 8:15 PM CDTSevere Thunderstorm WarningDMXAdair, Adams, Cass, Union25 min
Jun 25, 8:22 PM CDTSevere Thunderstorm WarningDMXClarke, Lucas, Madison, Warren38 min
Jun 25, 8:49 PM CDTSevere Thunderstorm WarningDMXClarke, Decatur, Lucas, Union, Wayne56 min
Jun 25, 8:51 PM CDTSevere Thunderstorm WarningDMXAdams, Cass, Ringgold, Union39 min
Jun 25, 8:55 PM CDTSevere Thunderstorm WarningDMXClarke, Lucas, Monroe, Wayne49 min
Jun 25, 9:26 PM CDTSevere Thunderstorm WarningDMXAdams, Cass, Clarke, Decatur, Ringgold, Taylor and 1 more49 min
Jun 25, 9:43 PM CDTSevere Thunderstorm WarningDMXClarke, Decatur, Lucas, Wayne29 min
Jun 25, 10:05 PM CDTSevere Thunderstorm WarningDMXAdair, Adams, Cass, Clarke, Decatur, Ringgold and 2 more40 min
Jun 25, 10:40 PM CDTSevere Thunderstorm WarningDMXDecatur, Ringgold50 min
Jun 25, 10:44 PM CDTSevere Thunderstorm WarningDMXRinggold33 min
Jun 25, 10:52 PM CDTSpecial Weather StatementDMXAdams, Clarke, Decatur, Union83 min
Jun 25, 10:59 PM CDTSevere Thunderstorm WarningDMXAdair, Adams, Cass, Taylor, Union34 min
Jun 25, 11:02 PM CDTSevere Thunderstorm WarningDMXDecatur, Wayne43 min
Jun 25, 11:28 PM CDTSevere Thunderstorm WarningDMXAdams, Ringgold, Union47 min
Jun 25, 11:37 PM CDTSevere Thunderstorm WarningDMXWayne23 min
Jun 25, 11:54 PM CDTSevere Thunderstorm WarningDMXAdair, Adams, Cass27 min
Jun 26, 12:08 AM CDTFlash Flood WarningDMXAdams, Ringgold, Union6 hr
Jun 26, 12:10 AM CDTSevere Thunderstorm WarningDMXAdams, Clarke, Ringgold, Union50 min
Jun 26, 12:17 AM CDTSevere Thunderstorm WarningDMXAdams, Union43 min
Jun 26, 12:48 AM CDTSevere Thunderstorm WarningDMXAdair, Adams, Cass42 min
Jun 26, 1:00 AM CDTSevere Thunderstorm WarningDMXAdams, Ringgold, Union45 min
Jun 26, 1:23 AM CDTSevere Thunderstorm WarningDMXAdair, Adams, Cass52 min
Jun 26, 1:43 AM CDTSevere Thunderstorm WarningDMXAdair, Cass47 min

Nearby

Flash Flood Warnings in Iowa, 2019Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.