Alert archive / Kansas / Flash Flood Warnings in 2012
Flash Flood Warning 4, NWS Topeka, KS
NWS Topeka, KS issued this flash flood warning at Aug 25, 2012, 9:46 PM CDT for Lyon County, Osage County, Wabaunsee County, Kansas. It was in force for 109 min. 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 25, 2012, 9:46 PM CDT (02:46 UTC)
- Expired
- Aug 25, 2012, 11:35 PM CDT
- In force
- 109 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lyon County, KS, Osage County, KS, Wabaunsee County, KS
The radar
The Topeka radar (KTWX), 41 km from the middle of the area, began a volume at 02:49 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
Topeka, KS (KFOE), launched 00:00Z, 2.8 hours before the alert went out and 45 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.
- Mixed-layer CAPE
- 471 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
149 WGUS53 KTOP 260246 FFWTOP KSC111-139-197-260545- /O.NEW.KTOP.FF.W.0004.120826T0246Z-120826T0545Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TOPEKA KS 946 PM CDT SAT AUG 25 2012 THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN LYON COUNTY IN EAST CENTRAL KANSAS... NORTHWESTERN OSAGE COUNTY IN EAST CENTRAL KANSAS... SOUTHEASTERN WABAUNSEE COUNTY IN EAST CENTRAL KANSAS... * UNTIL 1245 AM CDT * AT 940 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. * LOCATIONS IMPACTED INCLUDE... BURLINGAME... HARVEYVILLE... READING... THIS INCLUDES THE KANSAS TURNPIKE BETWEEN MILE MARKERS 140 AND 163. AT 945 PM CDT DOPPLER RADAR INDICATED TRAINING THUNDERSTORMS WITH RAIN RATES OF AROUND 1 TO 2 INCHES PER HOUR OVER THE WARNED AREA. EXPECT HEAVY RAIN TO PERSIST OVER THE WARNED AREA FOR THE NEXT HOUR WITH APPROXIMATELY 1 TO 2 INCH PER HOUR RAIN RATES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL WILL CAUSE FLASH FLOODING OF INTERSECTIONS AND COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. MOVE TO HIGHER GROUND...AWAY FROM RISING WATER. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE LATEST INFORMATION CONCERNING THE SEVERE WEATHER. && LAT...LON 3885 9595 3885 9578 3844 9600 3844 9617 $$ LEIGHTON
2 follow-up statements
682 WGUS73 KTOP 260400 FFSTOP FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 1100 PM CDT SAT AUG 25 2012 KSC111-139-197-260545- /O.CON.KTOP.FF.W.0004.000000T0000Z-120826T0545Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OSAGE-LYON-WABAUNSEE- 1100 PM CDT SAT AUG 25 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR SOUTHEASTERN WABAUNSEE...NORTHEASTERN LYON AND NORTHWESTERN OSAGE COUNTIES... AT 1050 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR TO INDICATED THAT THE HEAVIEST RAIN HAS SUBSIDED AND MOVED OUT OF THE WARNED AREA...HOWEVER RUNOFF FROM PREVIOUS THUNDERSTORMS COULD CAUSE WATER TO RUN OVER ROADS. ADDITIONALLY...OCCASIONAL PERIODS OF LIGHT TO MODERATE RAIN WILL ALSO MOVE OVER THE AREA...BRINGING ANOTHER TENTH TO A QUARTER INCH OF RAIN. LOCATIONS IMPACTED INCLUDE... BURLINGAME...HARVEYVILLE AND READING. THIS INCLUDES THE KANSAS TURNPIKE BETWEEN MILE MARKERS 141 AND 163. PRECAUTIONARY/PREPAREDNESS ACTIONS... RUNOFF FROM EARLIER HEAVY RAIN WILL CAUSE FLASH FLOODING OF INTERSECTIONS AND ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. MOVE TO HIGHER GROUND...AWAY FROM RISING WATER. && LAT...LON 3885 9595 3885 9578 3844 9600 3844 9617 $$ LEIGHTON
267 WGUS73 KTOP 260435 FFSTOP FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 1135 PM CDT SAT AUG 25 2012 KSC111-139-197-260444- /O.CAN.KTOP.FF.W.0004.000000T0000Z-120826T0545Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OSAGE-LYON-WABAUNSEE- 1135 PM CDT SAT AUG 25 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN WABAUNSEE...NORTHEASTERN LYON AND NORTHWESTERN OSAGE COUNTIES... AT 1134 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE VERY HEAVY RAIN HAS ENDED...AND THE POSSIBILITY FOR FLASH FLOODING WILL CONTINUE TO DECREASE. THEREFORE THE FLASH FLOOD WARNING IS NO LONGER IN EFFECT. AT 1134 PM CDT...LOCAL LAW ENFORCEMENT REPORTS NO FLASH FLOODING IS OCCURRING...AND RUNOFF FROM THE EARLIER HEAVY RAINFALL CONTINUES TO RECEDE. THEREFORE THE FLASH FLOOD WARNING IS NO LONGER IN EFFECT. LAT...LON 3885 9595 3885 9578 3844 9600 3844 9617 $$ GARGAN
Nearby
Flash Flood Warnings in Kansas, 2012Every flash flood warning in 2012
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.