Alert archive / Kansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 8, NWS Topeka, KS

April 9, 2013Marshall County, Riley County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 9, 2013, 4:59 PM CDT for Marshall County, Riley County, Washington County, Kansas. It was in force for 46 min. 3 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: Apr 9, 2013, 4:59 PM CDT (21:59 UTC)
Expired: Apr 9, 2013, 5:45 PM CDT
In force: 46 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Marshall County, KS, Riley County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 70 km from the middle of the area, began a volume at 21:58 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
Apr 9, 5:15 PM CDT	HAIL 1	3 Wnw Randolph, KS
Apr 9, 5:18 PM CDT	HAIL 0.75	6 N Randolph, KS
Apr 9, 5:28 PM CDT	HAIL 1	7 S Blue Rapids, KS	LOTS OF QUARTER SIZE HAIL.

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 2 storm reports to this severe thunderstorm warning; the first came 16 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 (KTOP), launched 12:00Z, 10.0 hours before the alert went out and 108 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: 321 J/kg
Mixed-layer CIN: -295 J/kg
Mixed-layer LCL: 818 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 456 m²/s²
0-3 km storm-relative helicity: 453 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

632 
WUUS53 KTOP 092159
SVRTOP
KSC117-161-201-092245-
/O.NEW.KTOP.SV.W.0008.130409T2159Z-130409T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
459 PM CDT TUE APR 9 2013

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MARSHALL COUNTY IN NORTHEAST KANSAS...
  NORTHWESTERN RILEY COUNTY IN NORTHEAST KANSAS...
  SOUTHEASTERN WASHINGTON COUNTY IN NORTH CENTRAL KANSAS...

* UNTIL 545 PM CDT

* AT 458 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  LEONARDVILLE...AND MOVING NORTHEAST AT 50 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...TRAINED WEATHER SPOTTERS.

  IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WATERVILLE AROUND 520 PM CDT.
  BLUE RAPIDS AROUND 525 PM CDT.
  MARYSVILLE AROUND 535 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3979 9642 3953 9662 3952 9665 3948 9667
      3948 9668 3946 9669 3946 9671 3945 9672
      3943 9671 3942 9673 3941 9671 3931 9678
      3934 9696 3949 9695 3991 9674
TIME...MOT...LOC 2159Z 207DEG 44KT 3943 9685

HAIL...1.00IN
WIND...<50MPH

$$

2 follow-up statements

138 
WWUS53 KTOP 092219
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
519 PM CDT TUE APR 9 2013

KSC117-161-201-092245-
/O.CON.KTOP.SV.W.0008.000000T0000Z-130409T2245Z/
RILEY-MARSHALL-WASHINGTON-
519 PM CDT TUE APR 9 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
WASHINGTON...SOUTHWESTERN MARSHALL AND NORTHWESTERN RILEY COUNTIES
UNTIL 545 PM CDT...

AT 518 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTH OF
WATERVILLE...AND MOVING NORTHEAST AT 40 MPH.

HAZARD...HALF DOLLAR SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS. ONE INCH HAIL WAS REPORTED 3 
MILES WEST NORTHWEST OF RANDOLPH AT 515 PM.

IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BLUE RAPIDS AND WATERVILLE AROUND 530 PM CDT.
  MARYSVILLE AROUND 545 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3979 9642 3953 9662 3954 9662 3952 9665
      3946 9669 3946 9671 3945 9672 3943 9671
      3942 9673 3941 9671 3941 9695 3949 9695
      3991 9674
TIME...MOT...LOC 2219Z 209DEG 36KT 3958 9674

HAIL...1.25IN
WIND...<50MPH

$$

020 
WWUS53 KTOP 092230
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
530 PM CDT TUE APR 9 2013

KSC161-201-092240-
/O.CAN.KTOP.SV.W.0008.000000T0000Z-130409T2245Z/
RILEY-WASHINGTON-
530 PM CDT TUE APR 9 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON AND
NORTHWESTERN RILEY COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3957 9679 3988 9667 3984 9656 3979 9643
      3968 9650 3957 9659
TIME...MOT...LOC 2230Z 209DEG 36KT 3968 9667

$$

KSC117-092245-
/O.CON.KTOP.SV.W.0008.000000T0000Z-130409T2245Z/
MARSHALL-
530 PM CDT TUE APR 9 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
MARSHALL COUNTY UNTIL 545 PM CDT...

AT 528 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BLUE RAPIDS...
AND MOVING NORTHEAST AT 40 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MARYSVILLE AROUND 545 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3957 9679 3988 9667 3984 9656 3979 9643
      3968 9650 3957 9659
TIME...MOT...LOC 2230Z 209DEG 36KT 3968 9667

HAIL...1.00IN
WIND...<50MPH

$$

What forecasters said that day

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

NWS Topeka, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 9, 3:25 PM CDT, 1 hour 34 minutes earlier.

Area forecast discussion, Apr 9, 3:25 PM CDT, 1 hour 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TOPEKA KS
325 PM CDT TUE APR 9 2013

.SHORT TERM...(THIS EVENING THROUGH WEDNESDAY)
ISSUED AT 325 PM CDT TUE APR 9 2013

CONVECTION BEGINNING TO INCREASE ALONG THE COLD FRONT THIS
AFTERNOON. AREAS IN THE WARM AIR OUT AHEAD OF THE FRONT REMAIN IN
THE MIDDLE TO UPPER 70S WHILE TEMPERATURES BEHIND DROP SHARPLY.
CONCORDIA STILL ONLY 40 DEGREES THIS HOUR WITH 30S NOT FAR WEST.
THE MAIN LARGE SCALE UPPER LOW CURRENTLY OVER COLORADO CONTINUES TO
MOVE SLOWLY EASTWARD.

WITH THE COLD AIR MOVING EASTWARD SO QUICKLY AND A WARM MID LEVEL
CAP STILL IN PLACE...EXPECT MOST SHOWERS AND STORMS TO BE GENERATED
ABOVE AND BEHIND THE FRONT AS IT PASSES. THIS BRINGS THE WIND AND
TORNADO THREAT DOWN CONSIDERABLY...BUT THERE IS STILL A CHANCE FOR
LOWER END SEVERE HAIL.

THE SECONDARY CONCERN REMAINS THE COLD DOME MOVING INTO THE AREA.
WHILE THE WARM NOSE REMAINS NEARLY 10C...THE COLD NOSE NEAR 910MB
COOLS TO NEARLY -4C...AND WILL BE ABLE TO REFREEZE PRECIPITATION AS
IT FALLS THROUGH THE COLD AIR...PARTICULARLY FOR SMALLER DROPLETS.
WHILE CONVECTIVE CHANCES DECREASE THIS EVENING...BROAD ISENTROPIC
LIFT IN A SATURATED LAYER NEAR 295K COULD MAKE FOR SEVERAL HOURS OF
FREEZING RAIN OR FREEZING DRIZZLE. THINK ACCUMULATIONS WILL BE
LIGHT...BUT ENOUGH OF AN IMPACT TO WARRANT AN ADVISORY ACROSS OUR
NORTH CENTRAL COUNTIES. THIS ADVISORY MAY NEED TO BE SHIFTED SOUTH
AND EAST AS THE NIGHT GOES ON...AS COOLER TEMPERATURES MAKE THEIR
WAY EASTWARD. EXPECT TO SWITCH TO SLEET TOWARD SUNRISE AND DIMINISH
IN COVERAGE. HIGHS NOT LIKELY TO MAKE IT MUCH OUT OF THE 30S WEST TO
LOW 40S EAST.

.LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)
ISSUED AT 325 PM CDT TUE APR 9 2013

UPPER LOW DEEPENS RATHER QUICKLY WEDNESDAY NIGHT THOUGH MAIN TROF
LOOKS TO PUSH THROUGH EARLY IN THE EVENING WITH ONLY SHALLOW
MOISTURE REMAINING IN ITS WAKE. WILL LEAVE SOME SMALL POPS IN PLACE
IN MAINLY NORTHEASTERN LOCATIONS. TEMPERATURE PROFILES WILL AGAIN
SUPPORT WINTRY PRECIPITATION TYPES IN THE OVERNIGHT HOURS...BUT
ANYTHING BEYOND VERY LIGHT AMOUNTS SEEMS QUITE UNLIKELY. UPPER LOW
EXITS TO THE EAST OF THE AREA BY LATE THURSDAY THOUGH LOW CLOUD
CONTINUES TO APPEAR TO BE RATHER PREVALENT AND WITH THE AREA
RECOVERING FROM WEDNESDAY NIGHT COLD AIR ADVECTION AND HIGHS WILL
STILL STRUGGLE INTO THE 40S WITH GOOD MIXING. SOME MODIFICATION WILL
OCCUR FOR FRIDAY WITH INCREASING INSOLATION AND WEAKER WINDS.

TEMPS CONTINUE TO WARM FOR THE WEEKEND BUT THE NEXT COLD FRONT LOOKS
TO SLIDE IN LATE SUNDAY. THE WINDOW FOR MOISTURE TO RETURN WITH THIS
FRONT IS NOT LARGE...BUT PERHAPS ENOUGH FOR THUNDERSTORMS IN
SOUTHERN AND EASTERN AREAS. A SECONDARY COLDER AIRMASS THEN COMES IN
BEHIND A DEEPER SHORTWAVE AROUND TUESDAY WITH AT LEAST MINOR CONCERN
FOR ANOTHER BOUT OF WINTRY WEATHER AS LOW LEVEL TEMPS DIVE.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z WEDNESDAY AFTERNOON)
ISSUED AT 1235 PM CDT TUE APR 9 2013

CURRENT RADAR TRENDS AND SFC OBS SHOW THE FRONT MOVING MUCH
FASTER THAN MODELS PREDICTED. ATTM...EXPECT FROPA ACROSS MHK BY 19Z
AND TOP/FOE BY 23Z. DO EXPECT SOME TSRA DEVELOPMENT...BUT WITH THE
SPEED AND TIMING OF THE FRONT...A WELL ORGANIZED CONVECTIVE EVENT
FOR THE TERMINALS BEGINS TO COME INTO QUESTION. UPSTREAM SFC OBS
SHOWING IFR CONDITIONS JUST BEHIND THE FRONT WITH REDUCED VSBY TO
AROUND TWO MILES WITH FOG. FOLLOWED SUIT FOR THE TERMINALS AFTER
FROPA. SFC TEMPERATURES WILL ALSO LEAD TO FZDZ FOR MHK BY 07Z AS
MUCH COLDER SFC AIR FILTERS IN.

&&

.TOP WATCHES/WARNINGS/ADVISORIES...
WINTER WEATHER ADVISORY UNTIL 10 AM CDT WEDNESDAY FOR KSZ008-009-
020-021-034.

&&

SHORT TERM...67
LONG TERM...65
AVIATION...BYRNE

Hazardous weather outlook, Apr 9, 2:10 PM CDT, 2 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
210 PM CDT TUE APR 9 2013

KSZ008>012-020>024-026-034>040-054>056-058-059-101915-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
210 PM CDT TUE APR 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH
CENTRAL AND NORTHEAST KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE REMAINS A CHANCE FOR SEVERE THUNDERSTORMS ACROSS EAST
CENTRAL KANSAS THIS AFTERNOON AND THIS EVENING. THIS IS GENERALLY
FOR AREAS EAST OF A LINE FROM COUNCIL GROVE TO TOPEKA...AND STORMS
ARE MOST LIKELY BETWEEN 4 AND 10 PM. THERE COULD BE LARGE HAIL
AROUND 1 INCH IN DIAMETER AND GUSTY WINDS OF 60 MPH.

WITH TEMPERATURES FALLING BELOW FREEZING...FREEZING DRIZZLE AND
FREEZING RAIN IS POSSIBLE ACROSS NORTH CENTRAL KANSAS WITH LIGHT
ACCUMULATIONS OF ICE ON MAINLY EXPOSED AND ELEVATED SURFACES. A
WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM WEDNESDAY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

FREEZING RAIN AND SLEET ARE POSSIBLE ACROSS NORTH CENTRAL KS
WEDNESDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED THIS AFTERNOON AND THIS EVENING ACROSS EAST
CENTRAL KANSAS. SPOTTERS ARE ALSO ENCOURAGED TO REPORT ANY FREEZING
RAIN OR SLEET TO THE NATIONAL WEATHER SERVICE IN TOPEKA.

WOLTERS

In the hours before

Special weather statement, Apr 9, 4:03 PM CDT, 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
403 PM CDT TUE APR 9 2013

KSZ035-092130-
DICKINSON-
403 PM CDT TUE APR 9 2013

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN DICKINSON COUNTY...

THROUGH 430 PM CDT...A THUNDERSTORM WILL MOVE NORTH AT 45 MPH ACROSS
PORTIONS OF WESTERN DICKINSON COUNTY. THIS STORM IS CAPABLE OF
PRODUCING PENNY SIZE HAIL AND BRIEF HEAVY RAIN. SOME LOCATIONS THAT
COULD BE AFFECTED INCLUDE SOLOMON...ABILENE...ENTERPRISE...
TALMAGE...MOONLIGHT AND MANCHESTER. MOTORISTS ALONG INTERSTATE 70
BETWEEN MILE MARKERS 267 AND 283 COULD ALSO BE AFFECTED.

&&

LAT...LON 3913 9736 3913 9700 3870 9720 3873 9738
      3884 9738
TIME...MOT...LOC 2103Z 197DEG 39KT 3882 9728

Local storm report, Apr 9, 4:20 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
420 PM CDT TUE APR 09 2013

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

0415 PM     HAIL             ESE ABILENE             38.92N 97.21W
04/09/2013  E1.00 INCH       DICKINSON          KS   TRAINED SPOTTER

&&

KSANDERS

Local storm report, Apr 9, 4:31 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
431 PM CDT TUE APR 09 2013

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

0420 PM     HAIL             3 N ENTERPRISE          38.95N 97.12W
04/09/2013  E1.25 INCH       DICKINSON          KS   TRAINED SPOTTER

&&

KSANDERS

Local storm report, Apr 9, 4:37 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
437 PM CDT TUE APR 09 2013

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

0430 PM     HAIL             7 N MOONLIGHT           39.10N 97.11W
04/09/2013  E1.00 INCH       DICKINSON          KS   TRAINED SPOTTER

&&

KSANDERS

Local storm report, Apr 9, 4:48 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
448 PM CDT TUE APR 09 2013

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

0442 PM     HAIL             4 S WAKEFIELD           39.16N 97.02W
04/09/2013  E1.75 INCH       CLAY               KS   PUBLIC

&&

KSANDERS

Local storm report, Apr 9, 4:52 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
452 PM CDT TUE APR 09 2013

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

0416 PM     HAIL             1 E ABILENE             38.92N 97.19W
04/09/2013  E1.50 INCH       DICKINSON          KS   TRAINED SPOTTER

            ALONG JEEP ROAD EAST OF ABILENE...HAIL NOT QUITE AS BIG
            AS A GOLFBALL BUT LARGER THAN A QUARTER.

&&

BARJENBRUCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 1:33 PM CDT	Winter Weather Advisory	TOP	Clay, Cloud, Dickinson, Geary, Morris, Ottawa and 3 more	28 hr
Apr 9, 4:03 PM CDT	Special Weather Statement	TOP	Dickinson	27 min
Apr 9, 4:07 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson	23 min
Apr 9, 4:25 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Dickinson, Geary, Riley	35 min
Apr 9, 4:50 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Morris, Wabaunsee	40 min
Apr 9, 5:32 PM CDT	Special Weather Statement	TOP	Pottawatomie	13 min
Apr 9, 5:34 PM CDT	Special Weather Statement	TOP	Geary	26 min
Apr 9, 5:42 PM CDT	Severe Thunderstorm Warning	TOP	Marshall	48 min
Apr 9, 5:46 PM CDT	Special Weather Statement	TOP	Marshall	29 min
Apr 9, 5:53 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Riley	37 min
Apr 9, 6:09 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	36 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2013 Every severe thunderstorm warning in 2013

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.