Alert archive / Missouri / Flash Flood Warnings in 2015

Flash Flood Warning 24, NWS Kansas City, MO

June 11, 2015Gentry County, Nodaway County, Worth County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jun 11, 2015, 5:40 PM CDT for Gentry County, Nodaway County, Worth County, Missouri. It was in force for 7 hr. 6 reports 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 11, 2015, 5:40 PM CDT (22:40 UTC)
Expired: Jun 12, 2015, 12:30 AM CDT
In force: 7 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

Counties Gentry County, MO, Nodaway County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 157 km from the middle of the area, began a volume at 22:42 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

Time	Report	Where	Remark
Jun 11, 5:55 PM CDT	FLASH FLOOD	1 W Sheridan, MO	WATER FLOWING OVER HWY 246 JUST WEST OF SHERIDAN.
Jun 11, 5:55 PM CDT	FLASH FLOOD	Grant City, MO	CITY STREETS FLOODING. WATER OVERRUNNING DITCHES AND FLOWING ACROSS ROADS.
Jun 11, 6:00 PM CDT	FLASH FLOOD	Grant City, MO	WATER OVERFLOWING DRAINAGES ACROSS GRANT CITY...ALLENDALE...WORTH. TIME ESTIMATED.
Jun 11, 6:30 PM CDT	FLASH FLOOD	1 E Ravenwood, MO	HWY O EAST OF RAVENWOOD.
Jun 11, 6:40 PM CDT	FLASH FLOOD	1 W Stanberry, MO	FLOODING ALONG HWY O.
Jun 11, 6:40 PM CDT	FLASH FLOOD	3 W Gentry, MO	FLOODING ALONG HWY O. CORRECTED FOR LOCATION.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 6 storm reports to this flash flood warning; the first came 15 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 10.7 hours before the alert went out and 190 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: 128 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 907 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

642 
WGUS53 KEAX 112240
FFWEAX
MOC075-147-227-120230-
/O.NEW.KEAX.FF.W.0024.150611T2240Z-150612T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
540 PM CDT THU JUN 11 2015

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN NODAWAY COUNTY IN NORTHWEST MISSOURI...
  GENTRY COUNTY IN NORTHWEST MISSOURI...
  WORTH COUNTY IN NORTHWEST MISSOURI...

* UNTIL 930 PM CDT

* AT 537 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. DOPPLER RADAR INDICATED RAINFALL OF ONE TO ONE AND A  
  HALF INCHES HAS FALLEN ACROSS THE WARNED AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALBANY...STANBERRY...GRANT CITY AND RAVENWOOD.


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.

&&

LAT...LON 4047 9423 4047 9421 4013 9422 4013 9478
      4058 9466 4058 9424

$$

PMM

1 follow-up statement

968 
WGUS53 KEAX 120232
FFWEAX
MOC075-147-227-120530-
/O.EXT.KEAX.FF.W.0024.000000T0000Z-150612T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
932 PM CDT THU JUN 11 2015

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  EASTERN NODAWAY COUNTY IN NORTHWEST MISSOURI...
  GENTRY COUNTY IN NORTHWEST MISSOURI...
  WORTH COUNTY IN NORTHWEST MISSOURI...

* UNTIL 1230 AM CDT

* AT 927 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. AN ADDITIONAL HALF INCH TO ONE INCH OF RAINFALL CAN   
  BE EXPECTED.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALBANY...STANBERRY...GRANT CITY AND RAVENWOOD.

LAW ENFORCEMENT HAS REPORTED THAT HIGHWAY O EAST OF RAVENWOOD HAS 
FLOODED.

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.

&&

LAT...LON 4047 9423 4047 9421 4013 9422 4013 9478
      4058 9466 4058 9424

$$

PMM

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this flash flood warning went out at Jun 11, 2:35 PM CDT, 3 hours 5 minutes earlier.

Area forecast discussion, Jun 11, 2:35 PM CDT, 3 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
235 PM CDT Thu Jun 11 2015

.DISCUSSION...
Issued at 203 PM CDT THU JUN 11 2015

An active afternoon and evening is starting to shape up for strong
to severe thunderstorms that should affect most of the area. At this
time we have a tornado watch out until 02z where supercells are
expected to develop ahead of a surface low and along a warm front
across our far northwestern counties. Shear and instability
parameters favor very large hail and a possible tornado or two. The
surface low should track across southern IA this evening with an
attended cold front moving into the CWA from the northwest.
Additional storms are anticipated to develop along the cold front and
those too are expected to be strong to severe. Would not be surprised
to see a severe watch issued to handle those storms. Latest NPW,
especially the HRRR, bring the line of storms into the KC Metro area
between 6 to 9 pm. Large hail, strong wind gusts, and locally heavy
rain will be the concerns with the line. Also, we have many of our
northern counties under a flash flood watch through 12z tomorrow
given the saturated soils and the expected convection. Lastly a
portion of a MCS may work in from the southwest very late tonight
along and north of the cold front. At this time, if the MCS develops,
our southeast counties would get brushed by it.

The rest of the forecast period will remain unsettled and on the wet
side of things as multiple disturbances track across the region.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday Afternoon)
Issued at 1236 PM CDT THU JUN 11 2015

In the near term, clearing skies will develop along with increasing
southwest winds ahead of an approaching cold front. Later this
afternoon thunderstorms are expected to develop along the front and
move through the terminals beginning early this evening. Current
thinking is there may be several rounds or clusters of storms that
will persist well into the overnight hours. Behind the cold front and
storms, northwesterly winds and a FEW-SCT cloud deck will persist
through the remaining period.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
KS...FLASH FLOOD WATCH through Friday morning FOR KSZ102.

MO...FLASH FLOOD WATCH through Friday morning FOR MOZ001>008-011>017.

&&

DISCUSSION...Pietrycha
AVIATION...Pietrycha

Hazardous weather outlook, Jun 11, 5:35 AM CDT, 12 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
535 AM CDT THU JUN 11 2015

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-121045-
ATCHISON KS-MIAMI-LINN KS-DONIPHAN-LEAVENWORTH-WYANDOTTE-JOHNSON KS-
ATCHISON MO-NODAWAY-WORTH-GENTRY-HARRISON-MERCER-PUTNAM-SCHUYLER-
HOLT-ANDREW-DE KALB-DAVIESS-GRUNDY-SULLIVAN-ADAIR-BUCHANAN-CLINTON-
CALDWELL-LIVINGSTON-LINN MO-MACON-PLATTE-CLAY-RAY-CARROLL-CHARITON-
RANDOLPH-JACKSON-LAFAYETTE-SALINE-HOWARD-CASS-JOHNSON MO-PETTIS-
COOPER-BATES-HENRY-
535 AM CDT THU JUN 11 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND
WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...TODAY AND TONIGHT

 THUNDERSTORMS LATER TODAY ARE EXPECTED TO REDEVELOP WITH STRONG
TO SEVERE STORMS POSSIBLE. THE PRIMARY HAZARDS WITH THE STRONGEST
STORMS WILL BE MODERATE TO HEAVY RAINFALL...CAUSING LOCALIZED
FLOODING CONCERNS...GUSTY TO DAMAGING WINDS...HAIL...DANGEROUS
CLOUD-TO-GROUND LIGHTNING...AND A SLIGHT RISK FOR TORNADO
DEVELOPMENT.

 MORE DETAILED INFORMATION CAN BE ACCESSED AT...
 HTTP://WWW.WEATHER.GOV/EAX/HWO

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

 MULTIPLE ROUNDS OF THUNDERSTORM ACTIVITY WILL CONTINUE THROUGH
NEXT WEEK WITH MODERATE TO HEAVY RAINFALL VERY POSSIBLE OVER THE
WEEKEND.

 MORE DETAILED INFORMATION CAN BE ACCESSED AT...
 HTTP://WWW.WEATHER.GOV/EAX/HWO

In the hours before

Local storm report, Jun 11, 4:05 PM CDT, 1 hour 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
405 PM CDT THU JUN 11 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     TORNADO          1 N TARKIO              40.45N 95.38W
06/11/2015                   ATCHISON           MO   STORM CHASER

            FORMED AND DISSIPATED MULTIPLE TIMES. TIME ESTIMATED BY
            RADAR.

&&

PMURRAY

Local storm report, Jun 11, 4:07 PM CDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
407 PM CDT THU JUN 11 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0400 PM     TORNADO          7 NE TARKIO             40.51N 95.28W
06/11/2015                   ATCHISON           MO   NWS EMPLOYEE

            BRIEF TORNADO

&&

LAFLIN

Local storm report, Jun 11, 5:03 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
503 PM CDT THU JUN 11 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     FLOOD            1 E WESTBORO            40.53N 95.30W
06/11/2015                   ATCHISON           MO   DEPT OF HIGHWAYS

            ROAD CLOSED DUE TO FLOODING ALONG THE TARKIO RIVER NEAR
            THE INTERSECTION OF HIGHWAYS C AND M EAST OF WESTBORO.

&&

SAW

Local storm report, Jun 11, 5:39 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
539 PM CDT THU JUN 11 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0520 PM     TSTM WND DMG     E MARYVILLE             40.34N 94.87W
06/11/2015                   NODAWAY            MO   EMERGENCY MNGR

            POWERLINES DOWN ON LIBERTY ROAD NORTH OF MOZINGO LAKE

&&

LAFLIN

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 7:09 PM CDT	Special Weather Statement	EAX	Putnam	51 min
Jun 10, 7:25 PM CDT	Areal Flood Advisory	EAX	Putnam, Schuyler	4 hr
Jun 10, 7:46 PM CDT	Severe Thunderstorm Warning	EAX	Putnam, Schuyler	44 min
Jun 11, 3:36 AM CDT	Areal Flood Advisory	EAX	Atchison, Holt, Nodaway	6 hr
Jun 11, 4:35 AM CDT	Flash Flood Watch	EAX	Adair, Andrew, Atchison, Daviess, DeKalb, Gentry and 9 more	23 hr
Jun 11, 6:20 AM CDT	River Flood Warning	EAX	Atchison, Holt	69 hr
Jun 11, 7:01 AM CDT	Areal Flood Advisory	EAX	Atchison, Holt	4 hr
Jun 11, 10:07 AM CDT	River Flood Warning	EAX	Andrew, Nodaway	68 hr
Jun 11, 10:07 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	4 days
Jun 11, 10:23 AM CDT	River Flood Warning	EAX	Linn, Livingston	4 days
Jun 11, 10:23 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	7 days
Jun 11, 10:23 AM CDT	River Flood Warning	EAX	Carroll, Chariton	10 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	8 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Buchanan, Platte	7 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Platte	5 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Clay, Jackson, Ray	9 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Jackson, Lafayette, Ray	20 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Chariton, Howard, Saline	9 days
Jun 11, 10:29 AM CDT	River Flood Warning	EAX	Cooper, Howard	10 days
Jun 11, 10:35 AM CDT	River Flood Warning	EAX	Andrew, Holt, Nodaway	62 hr
Jun 11, 10:35 AM CDT	River Flood Warning	EAX	Buchanan	8 days
Jun 11, 10:35 AM CDT	River Flood Warning	EAX	Platte	9 days
Jun 11, 10:35 AM CDT	River Flood Warning	EAX	Platte	10 days
Jun 11, 3:36 PM CDT	Tornado Warning	EAX	Atchison	24 min
Jun 11, 3:42 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	48 min
Jun 11, 3:57 PM CDT	Tornado Warning	EAX	Atchison, Nodaway	33 min
Jun 11, 4:09 PM CDT	Tornado Warning Tornado observed	EAX	Atchison, Nodaway	18 min
Jun 11, 4:13 PM CDT	Flash Flood Warning	EAX	Atchison, Holt, Nodaway	4 hr
Jun 11, 4:44 PM CDT	Tornado Warning	EAX	Nodaway	6 min
Jun 11, 4:46 PM CDT	Tornado Warning	EAX	Holt	29 min
Jun 11, 4:47 PM CDT	Tornado Warning	EAX	Holt, Nodaway	28 min
Jun 11, 5:12 PM CDT	Tornado Warning	EAX	Nodaway	33 min
Jun 11, 5:40 PM CDT	Tornado Warning	EAX	Gentry, Nodaway	26 min
Jun 11, 5:44 PM CDT	Severe Thunderstorm Warning	EAX	Harrison, Worth	46 min
Jun 11, 5:57 PM CDT	Tornado Warning	EAX	Gentry, Harrison, Worth	33 min
Jun 11, 6:12 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Holt, Nodaway	48 min
Jun 11, 6:20 PM CDT	Flash Flood Warning	EAX	Andrew, Holt	4 hr
Jun 11, 6:20 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Harrison, Mercer	40 min
Jun 11, 6:25 PM CDT	Flash Flood Warning	EAX	Gentry, Harrison, Worth	4 hr
Jun 11, 6:51 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, DeKalb, Gentry	39 min
Jun 11, 6:55 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Mercer, Putnam, Sullivan	50 min

Nearby

Flash Flood Warnings in Missouri, 2015 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.