Alert archive / Kansas / Flash Flood Warnings in 2011

Flash Flood Warning 4, NWS Topeka, KS

June 1, 2011Nemaha County, Kansas

NWS Topeka, KS issued this flash flood warning at Jun 1, 2011, 5:36 PM CDT for Nemaha County, Kansas. It was in force for 4 hr. 2 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 1, 2011, 5:36 PM CDT (22:36 UTC)
Expired
Jun 1, 2011, 9:30 PM CDT
In force
4 hr
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Flood severity
None

County Nemaha County, KS

The radar

The Topeka radar (KTWX), 89 km from the middle of the area, began a volume at 22:36 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.

What was reported inside it

TimeReportWhereRemark
Jun 1, 5:41 PM CDTFLASH FLOODSw Seneca, KSWATER COVERING K187 HIGHWAY. HIGHWAY IS NOT CLOSED BUT DEPUTIES ARE ON THE SCENE DIRECTING TRAFFIC.
Jun 1, 6:28 PM CDTHEAVY RAIN 14 Wsw Woodlawn, KSSTORM TOTAL

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

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.6 hours before the alert went out and 88 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, Topeka, KS at 12:00Z on 2011-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Topeka, KS at 12:00Z on 2011-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2267 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
121 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.

185 
WGUS53 KTOP 012236
FFWTOP
KSC131-020230-
/O.NEW.KTOP.FF.W.0004.110601T2236Z-110602T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
536 PM CDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN NEMAHA COUNTY IN NORTHEAST KANSAS...

* UNTIL 930 PM CDT

* AT 525 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
RAIN FALLING AT NEARLY TWO INCHES PER HOUR OVER SOUTHERN NEMAHA 
COUNTY.  ADDITIONAL THUNDERSTORMS WITH VERY HEAVY RAIN WILL CONTINUE 
THROUGH 630 PM AND ARE EXPECTED TO CAUSE FLASH FLOODING.

* LOCATIONS IMPACTED INCLUDE...
  CENTRALIA...
  CORNING...
  GOFF...
  ONEIDA...
  SENECA...
  WETMORE...
  WOODLAWN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE INTO AREAS WHERE THE WATER COVERS THE ROAD.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST INFORMATION CONCERNING THE SEVERE WEATHER.

&&

LAT...LON 3987 9579 3958 9579 3961 9612 3988 9619

$$
2 follow-up statements
469 
WGUS73 KTOP 012325
FFSTOP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
625 PM CDT WED JUN 1 2011

KSC131-020230-
/O.CON.KTOP.FF.W.0004.000000T0000Z-110602T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEMAHA-
625 PM CDT WED JUN 1 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHERN NEMAHA COUNTY...

AT 541 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED WATER 
FLOWING RAPIDLY ACROSS HIGHWAY K 187 SOUTH OF SENECA.  RADAR 
ESTIMATED THAT 1.5 TO 2.5 INCHES OF RAIN HAD FALLEN ACROSS PORTIONS 
OF THE SOUTHERN HALF OF NEMAHA COUNTY IN ABOUT AN HOURS TIME.  THIS 
SHOULD CAUSE FLASH FLOODING OF STREAMS AND LOW SPOTS IN ROADS.  

LOCATIONS IMPACTED INCLUDE...
CENTRALIA...CORNING...GOFF AND WETMORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

&&

LAT...LON 3981 9616 3977 9579 3958 9579 3961 9612

$$
707 
WGUS73 KTOP 020044
FFSTOP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
744 PM CDT WED JUN 1 2011

KSC131-020054-
/O.CAN.KTOP.FF.W.0004.000000T0000Z-110602T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEMAHA-
744 PM CDT WED JUN 1 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHERN NEMAHA
COUNTY...

AT 744 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
VERY HEAVY RAIN HAS ENDED ACROSS SOUTHERN NEMAHA COUNTY.

LOCAL LAW ENFORCEMENT ALSO REPORTS THAT THE FLASH FLOODING IS NO 
LONGER OCCURRING AND RUNOFF FROM THE THUNDERSTORMS CONTINUES TO 
RECEDE. THEREFORE THE FLASH FLOOD WARNING IS NO LONGER IN EFFECT.

LAT...LON 3981 9616 3977 9579 3958 9579 3961 9612

$$

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 1, 10:25 AM CDTSpecial Weather StatementTOPOttawa35 min
Jun 1, 10:38 AM CDTSevere Thunderstorm WarningTOPCloud, Ottawa37 min
Jun 1, 1:36 PM CDTAreal Flood AdvisoryTOPClay54 min
Jun 1, 2:40 PM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha, Pottawatomie50 min
Jun 1, 3:18 PM CDTSevere Thunderstorm WarningTOPJackson, Nemaha, Pottawatomie42 min
Jun 1, 3:44 PM CDTSevere Thunderstorm WarningTOPJackson, Pottawatomie, Shawnee46 min
Jun 1, 3:48 PM CDTSevere Thunderstorm WarningTOPLyon, Osage42 min
Jun 1, 3:56 PM CDTSpecial Weather StatementTOPLyon34 min
Jun 1, 4:23 PM CDTSevere Thunderstorm WarningTOPJackson, Shawnee37 min
Jun 1, 4:26 PM CDTFlash Flood WarningTOPMarshall, Nemaha2 hr
Jun 1, 4:40 PM CDTSpecial Weather StatementTOPOsage35 min
Jun 1, 4:48 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson, Shawnee42 min
Jun 1, 4:54 PM CDTSevere Thunderstorm WarningTOPBrown, Nemaha39 min
Jun 1, 5:24 PM CDTSevere Thunderstorm WarningTOPBrown, Jackson, Nemaha51 min
Jun 1, 5:47 PM CDTSevere Thunderstorm WarningTOPJefferson43 min
Jun 1, 6:02 PM CDTAreal Flood AdvisoryTOPJefferson58 min
Jun 1, 6:20 PM CDTSpecial Weather StatementTOPPottawatomie25 min
Jun 1, 6:36 PM CDTRiver Flood WarningTOPMarshall35 hr
Jun 1, 6:55 PM CDTSevere Thunderstorm WarningTOPCloud, Republic, Washington50 min

Nearby

Flash Flood Warnings in Kansas, 2011Every flash flood warning in 2011

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.