Alert archive / Missouri / Flash Flood Warnings in 2015

Flash Flood Warning 66, NWS St. Louis, MO

July 20, 2015Reynolds County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 20, 2015, 3:36 AM CDT for Reynolds County, Missouri. 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
Jul 20, 2015, 3:36 AM CDT (08:36 UTC)
Expired
Jul 20, 2015, 9:30 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

County Reynolds County, MO

The radar

The St Louis radar (KLSX), 169 km from the middle of the area, began a volume at 08:36 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

Springfield, MO (KSGF), launched 00:00Z, 8.6 hours before the alert went out and 254 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, Springfield, MO at 00:00Z on 2015-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4333 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2015-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
4333 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1034 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

020 
WGUS53 KLSX 200836
FFWLSX
MOC179-201430-
/O.NEW.KLSX.FF.W.0066.150720T0836Z-150720T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
336 AM CDT MON JUL 20 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN REYNOLDS COUNTY IN SOUTHEASTERN MISSOURI...

* UNTIL 930 AM CDT
    
* AT 335 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAS 
  ALREADY FALLEN...AND MORE HEAVY THUNDERSTORMS ARE MOVING INTO THE 
  COUNTY FROM THE WEST . FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  REYNOLDS...ELLINGTON...GARWOOD...REDFORD AND CORRIDON. 

THIS WARNING ALSO INCLUDES CLEARWATER LAKE RECREATIONAL AREA.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3705 9096 3710 9096 3710 9102 3717 9103
      3716 9107 3718 9109 3720 9109 3720 9113
      3725 9112 3726 9116 3741 9118 3742 9119
      3742 9077 3720 9073 3717 9074 3717 9075
      3714 9076 3714 9078 3705 9078

$$

CARNEY
2 follow-up statements
718 
WGUS73 KLSX 201245
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
745 AM CDT MON JUL 20 2015

MOC179-201430-
/O.CON.KLSX.FF.W.0066.000000T0000Z-150720T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
REYNOLDS MO-
745 AM CDT MON JUL 20 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
SOUTHERN REYNOLDS COUNTY...

AT 742 AM CDT...DOPPLER RADAR INDICATED THAT UP TO 4 INCHES OF RAIN 
HAD FALLEN WEST NORTHWEST OF ELLINGTON.  FLASH FLOODING IS EXPECTED 
ACROSS SOUTHERN PORTIONS OF THE COUNTY

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
REYNOLDS...ELLINGTON...GARWOOD...REDFORD AND CORRIDON. 

THIS WARNING ALSO INCLUDES CLEARWATER LAKE RECREATIONAL AREA.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3705 9096 3710 9096 3710 9102 3717 9103
      3716 9107 3718 9109 3720 9109 3720 9113
      3725 9112 3726 9116 3741 9118 3742 9119
      3742 9077 3720 9073 3717 9074 3717 9075
      3714 9076 3714 9078 3705 9078

$$

CARNEY
809 
WGUS73 KLSX 201420
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
920 AM CDT MON JUL 20 2015

MOC179-201430-
/O.EXP.KLSX.FF.W.0066.000000T0000Z-150720T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
REYNOLDS MO-
920 AM CDT MON JUL 20 2015

...THE FLASH FLOOD WARNING FOR SOUTHERN REYNOLDS COUNTY WILL EXPIRE
AT 930 AM CDT...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

LAT...LON 3705 9096 3710 9096 3710 9102 3717 9103
      3716 9107 3718 9109 3720 9109 3720 9113
      3725 9112 3726 9116 3741 9118 3742 9119
      3742 9077 3720 9073 3717 9074 3717 9075
      3714 9076 3714 9078 3705 9078

$$

BYRD

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 7:49 PM CDTRiver Flood WarningLSXLewis3 days
Jul 19, 9:21 PM CDTRiver Flood WarningLSXLewis48 hr
Jul 20, 7:28 AM CDTFlash Flood WarningLSXMoniteau6 hr
Jul 20, 9:43 AM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis, City of Saint Louis47 min
Jul 20, 5:02 PM CDTSevere Thunderstorm WarningLSXIron, Madison43 min
Jul 20, 6:00 PM CDTTornado WarningLSXIron, Madison14 min

Nearby

Flash Flood Warnings in Missouri, 2015Every flash flood warning in 2015

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.