Alert archive / Missouri / Flash Flood Warnings in 2014

Flash Flood Warning 7, NWS St. Louis, MO

April 3, 20144 counties in Missouri

NWS St. Louis, MO issued this flash flood warning at Apr 3, 2014, 9:25 PM CDT for 4 counties in Missouri. It was in force for 9 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: Apr 3, 2014, 9:25 PM CDT (02:25 UTC)
Expired: Apr 4, 2014, 6:30 AM CDT
In force: 9 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Crawford County, MO, Franklin County, MO, Jefferson County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 44 km from the middle of the area, began a volume at 02:24 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

Lincoln, IL (KILX), launched 00:00Z, 2.4 hours before the alert went out and 280 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 453 m²/s²
0-3 km storm-relative helicity: 319 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.

726 
WGUS53 KLSX 040225
FFWLSX
MOC055-071-099-221-041130-
/O.NEW.KLSX.FF.W.0007.140404T0225Z-140404T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
925 PM CDT THU APR 3 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
  FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
  NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 630 AM CDT FRIDAY

* AT 920 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL BE DIMINISHING ACROSS
  THE WARNING AREA OVER THE NEXT FEW HOURS.  HOWEVER...THE 
  TORRENTIAL DOWNPOURS OF LATE THURSDAY AFTERNOON AND THURSDAY
  EVENING WILL CONTINUE THE FLASH FLOOD THREAT WELL AFTER THE 
  RAIN ENDS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ANTHONIES MILL...ANTONIA...ARNOLD...BARNHART...BOURBON...BYRNES
  MILL...CEDAR HILL...CRYSTAL CITY...CUBA...DE SOTO...FESTUS...GRAY
  SUMMIT...HERCULANEUM...HIGH RIDGE...HILLSBORO...MURPHY...NEW
  HAVEN...PACIFIC...PEVELY...ST. CLAIR...STEELVILLE...SULLIVAN...
  UNION...VILLA RIDGE...WASHINGTON...BEAUFORT...DITTMER...GERALD...
  HOUSE SPRINGS AND LEASBURG.

THE MISSOURI DEPARTMENT OF TRANSPORTATION REPORTS THAT ROUTE N IS 
CLOSED IN BOTH DIRECTIONS IN NORTHERN CRAWFORD COUNTY...AND ALSO 
NEAR THE WASHINGTON/CRAWFORD COUNTY LINE.  IN ADDITION...HIGHWAY K 
IN SOUTHERN FRANKLIN COUNTY HAS BEEN WASHED OUT...AND THE ROAD IS 
CLOSED. 

THIS WARNING INCLUDES GOV. DUNKLIN'S GRAVE HISTORIC SITE...MASTODON
HISTORIC SITE...MERAMEC STATE PARK...ONONDAGA CAVE STATE PARK...
ROBERTSVILLE STATE PARK...SANDY CREEK COVERED BRIDGE HISTORIC SITE
AND WASHINGTON STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 44 FROM EXIT 203 TO EXIT 257.
INTERSTATE 55 IN MISSOURI FROM EXIT 170 TO EXIT 191.

LAT...LON 3821 9153 3823 9136 3870 9136 3862 9122
      3854 9094 3860 9077 3863 9074 3848 9073
      3845 9068 3850 9059 3850 9041 3845 9041
      3846 9034 3824 9037 3812 9025 3801 9062
      3807 9061 3807 9064 3789 9103 3787 9153

$$

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 7:00 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Saint Charles, Warren	45 min
Apr 3, 7:13 PM CDT	Tornado Warning Tornado observed	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	32 min
Apr 3, 7:22 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	53 min
Apr 3, 8:04 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Charles, Saint Louis, City of Saint Louis	41 min
Apr 3, 8:09 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Washington	51 min
Apr 3, 8:23 PM CDT	Tornado Warning Tornado observed	LSX	Saint Louis, City of Saint Louis	22 min
Apr 3, 9:00 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Sainte Genevieve, Saint Louis, Washington	45 min
Apr 3, 9:53 PM CDT	River Flood Warning	LSX	Callaway, Osage	65 hr
Apr 3, 9:53 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	3 days
Apr 3, 9:53 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	57 hr
Apr 3, 10:13 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	47 min
Apr 3, 10:22 PM CDT	Areal Flood Warning	LSX	Boone, Callaway	10 hr
Apr 4, 6:26 AM CDT	Areal Flood Warning	LSX	Crawford, Franklin, Jefferson, Washington	9 hr
Apr 4, 9:53 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	65 hr
Apr 4, 9:53 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	3 days

Nearby

Flash Flood Warnings in Missouri, 2014 Every flash flood warning in 2014

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.