Alert archive / Missouri / Flash Flood Warnings in 2016

Flash Flood Warning 28, NWS St. Louis, MO

August 2, 2016Audrain County, Boone County, Monroe County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 2, 2016, 10:00 AM CDT for Audrain County, Boone County, Monroe County, Missouri. It was in force for 2 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
Aug 2, 2016, 10:00 AM CDT (15:00 UTC)
Expired
Aug 2, 2016, 12:00 PM CDT
In force
2 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Audrain County, MO, Boone County, MO, Monroe County, MO

The radar

The St Louis radar (KLSX), 148 km from the middle of the area, began a volume at 15:03 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 3.0 hours before the alert went out and 289 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 12:00Z on 2016-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 793 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2016-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
793 J/kg
Mixed-layer CIN
-189 J/kg
Mixed-layer LCL
1632 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

947 
WGUS53 KLSX 021500
FFWLSX
MOC007-019-137-021700-
/O.NEW.KLSX.FF.W.0028.160802T1500Z-160802T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1000 AM CDT TUE AUG 2 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN MONROE COUNTY IN NORTHEASTERN MISSOURI...
  WESTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
  NORTHERN BOONE COUNTY IN CENTRAL MISSOURI...

* UNTIL NOON CDT

* AT 958 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. ROUTE Z
  AT ROUTE D WAS CLOSED DUE TO WATER OVER ROADWAY. TWO TO FOUR PLUS
  INCHES INCHES OF RAIN HAVE FALLEN. FLASH FLOODING IS EXPECTED TO
  CONTINUE THROUGH THE MORNING HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CENTRALIA...HALLSVILLE...STURGEON...MURRY AND HARRISBURG. 

ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE IN THE
WARNED AREA.

THIS ALSO INCLUDES  FINGER LAKES STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3925 9243 3925 9231 3960 9230 3924 9211
      3906 9209 3906 9213 3901 9214 3913 9248

$$

GOSSELIN
1 follow-up statement
379 
WGUS73 KLSX 021654
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1154 AM CDT TUE AUG 2 2016

MOC007-019-137-021703-
/O.EXP.KLSX.FF.W.0028.000000T0000Z-160802T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE MO-AUDRAIN MO-BOONE MO-
1154 AM CDT TUE AUG 2 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN MONROE...WESTERN AUDRAIN
AND NORTHERN BOONE COUNTIES WILL EXPIRE AT NOON CDT...

THE HEAVY RAIN HAS ENDED. HOWEVER...AN AREAL FLOOD WARNING IS NOW IN
EFFECT UNTIL 530 PM TODAY DUE TO THE CONTINUATION OF ROAD CLOSURES
ACROSS THE AREA AS LARGER STREAMS AND RIVERS CONTINUE TO RISE.

LAT...LON 3925 9243 3925 9231 3960 9230 3924 9211
      3906 9209 3906 9213 3901 9214 3913 9248

$$

GOSSELIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 2:09 AM CDTFlash Flood WarningLSXAudrain, Callaway, Monroe, Montgomery6 hr
Aug 2, 2:59 AM CDTFlash Flood WarningLSXFranklin, Gasconade, Osage, Warren5 hr
Aug 2, 4:02 AM CDTFlash Flood WarningLSXShelby5 hr
Aug 2, 4:57 AM CDTFlash Flood WarningLSXAudrain, Boone, Monroe5 hr
Aug 2, 5:34 AM CDTFlash Flood WarningLSXKnox6 hr
Aug 2, 7:57 AM CDTFlash Flood WarningLSXFranklin, Gasconade, Osage, Warren4 hr
Aug 2, 8:08 AM CDTFlash Flood WarningLSXAudrain, Callaway, Monroe, Montgomery4 hr
Aug 2, 8:58 AM CDTFlash Flood WarningLSXMonroe, Shelby3 hr
Aug 2, 11:31 AM CDTAreal Flood WarningLSXAudrain, Boone, Callaway, Franklin, Gasconade, Knox and 5 more6 hr
Aug 2, 3:05 PM CDTFlash Flood WatchLSXFranklin, Jefferson, Lewis, Lincoln, Marion, Pike and 6 more14 hr

Nearby

Flash Flood Warnings in Missouri, 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.