Alert archive / Missouri / Areal Flood Warnings in 2015

Areal Flood Warning 21, NWS St. Louis, MO

June 25, 2015Knox County, Lewis County, Missouri

NWS St. Louis, MO issued this areal flood warning at Jun 25, 2015, 2:51 PM CDT for Knox County, Lewis 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: Jun 25, 2015, 2:51 PM CDT (19:51 UTC)
Expired: Jun 25, 2015, 8:30 PM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Knox County, MO, Lewis County, MO

The radar

The St Louis radar (KLSX), 190 km from the middle of the area, began a volume at 19:56 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 12:00Z, 7.9 hours before the alert went out and 198 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: 10 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 691 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 137 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.

359 
WGUS43 KLSX 251951
FLWLSX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
251 PM CDT THU JUN 25 2015

MOC103-111-260130-
/O.NEW.KLSX.FA.W.0021.150625T1951Z-150626T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX MO-LEWIS MO-
251 PM CDT THU JUN 25 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLOOD WARNING FOR...
  KNOX COUNTY IN NORTHEAST MISSOURI...
  LEWIS COUNTY IN NORTHEAST MISSOURI...

* UNTIL 830 PM CDT

* AT 250 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING  
ACROSS THE WARNED AREA. NUMEROUS STATE AND COUNTY ROADS REMAIN 
FLOODED DUE TO HEAVY RAINFALL LAST NIGHT AND EARLY THIS MORNING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CANTON...
  EDINA...COLONY...EWING...GREENSBURG...KNOX CITY...LA BELLE...LA
  GRANGE...LEWISTOWN...MAYWOOD...PLEVNA AND STEFFENVILLE.

THIS WARNING INCLUDES WAKONDA STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

&&

LAT...LON 4031 9195 4026 9194 4025 9149 4019 9151
      4007 9150 3995 9145 3995 9186 3995 9235
      4031 9235

$$

GOSSELIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 11:11 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis	64 min
Jun 24, 11:31 PM CDT	Flash Flood Watch	LSX	Audrain, Knox, Lewis, Lincoln, Marion, Monroe and 3 more	7 hr
Jun 25, 12:07 AM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis, Marion, Shelby	38 min
Jun 25, 1:09 AM CDT	Flash Flood Warning	LSX	Knox, Lewis	6 hr
Jun 25, 2:39 AM CDT	Flash Flood Warning	LSX	Marion, Shelby	7 hr
Jun 25, 3:20 AM CDT	River Flood Warning	LSX	Marion	52 hr
Jun 25, 4:06 AM CDT	Flash Flood Watch	LSX	Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 17 more	39 hr
Jun 25, 7:03 AM CDT	Flash Flood Warning	LSX	Knox, Lewis	4 hr
Jun 25, 9:19 AM CDT	River Flood Warning	LSX	Monroe	62 hr
Jun 25, 9:26 AM CDT	Flash Flood Warning	LSX	Lewis, Marion, Shelby	4 hr
Jun 25, 10:54 AM CDT	Flash Flood Warning	LSX	Knox, Lewis	4 hr
Jun 25, 1:28 PM CDT	Areal Flood Warning	LSX	Marion, Shelby	7 hr
Jun 25, 3:21 PM CDT	River Flood Warning	LSX	Lincoln	3 days
Jun 25, 5:00 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	60 min
Jun 25, 5:51 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	54 min
Jun 25, 5:56 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	19 min
Jun 25, 6:32 PM CDT	Flash Flood Warning	LSX	Lincoln, Saint Charles	14 hr
Jun 25, 6:54 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	66 min

Nearby

Areal Flood Warnings in Missouri, 2015 Every areal 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.