Alert archive / Kansas / Tornado Warnings in 2007

Tornado Warning 30, NWS Topeka, KS

September 6, 2007Marshall County, Nemaha County, Kansas

NWS Topeka, KS issued this tornado warning at Sep 6, 2007, 9:54 PM CDT for Marshall County, Nemaha County, Kansas. It was in force for 37 min. 1 report 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
Sep 6, 2007, 9:54 PM CDT (02:54 UTC)
Expired
Sep 6, 2007, 10:31 PM CDT
In force
37 min
Issued by
NWS Topeka, KS
Area
Counties, with a storm outline in the text

Counties Marshall County, KS, Nemaha County, KS

The radar

The Topeka radar (KTWX), 100 km from the middle of the area, began a volume at 02:57 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
Sep 6, 10:03 PM CDTHAIL 16 S Summerfield, KSQUARTER SIZE HAIL. MAY BE SOME BIGGER STONES WITHIN. ALSO HAD 4 INCHES OF RAIN IN ABOUT 2 HOURS.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 6, 6:19 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.9 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-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2007-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1675 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2007-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 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
1675 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1502 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.5
Supercell composite
6.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KTOP 070254
TORTOP
KSC117-131-070345-
/O.NEW.KTOP.TO.W.0030.070907T0254Z-070907T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
954 PM CDT THU SEP 6 2007

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN MARSHALL COUNTY IN NORTHEAST KANSAS...
  NORTHERN NEMAHA COUNTY IN NORTHEAST KANSAS...

* UNTIL 1045 PM CDT

* AT 952 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BEATTIE...
  OR ABOUT 15 MILES EAST OF MARYSVILLE...MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  AXTELL...
  BAILEYVILLE...
  SENECA...
  BERN...
  ONEIDA...

FOR YOUR SAFETY...GO TO A STORM SHELTER OR BASEMENT NOW TORNADOES
MAY HAVE WINDS GREATER THAN 100 MPH. AVOID OVERPASSES AND WINDOWS...
AND COVER YOUR HEAD.

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

LAT...LON 3977 9589 3976 9642 3993 9648 4001 9619
      4000 9618 4000 9594
TIME...MOT...LOC 0254Z 263DEG 26KT 3987 9635

$$
3 follow-up statements
000 
WWUS53 KTOP 070306
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
1005 PM CDT THU SEP 6 2007

KSC117-131-070345-
/O.CON.KTOP.TO.W.0030.000000T0000Z-070907T0345Z/
NEMAHA-MARSHALL-
1005 PM CDT THU SEP 6 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
NORTHEASTERN MARSHALL AND NORTHERN NEMAHA COUNTIES...

AT 1002 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE
A SEVERE THUNDERSTORM WITH STRONG ROTATION CAPABLE OF PRODUCING A
TORNADO.  THIS AREA OF STRONG ROTATION WAS LOCATED NEAR AXTELL...OR 
ABOUT 19 MILES EAST OF MARYSVILLE...MOVING EAST AT 20 MPH. 
ADDITIONALLY DESTRUCTIVE HAIL UP TO THE SIZE OF BASEBALLS IS 
POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
AXTELL...BAILEYVILLE...SENECA...ONEIDA AND BERN.

FOR YOUR SAFETY...GO TO A STORM SHELTER OR BASEMENT NOW LEAVE 
MOBILE HOMES AND VEHICLES...AND GO TO A BASEMENT OR STORM SHELTER. 
IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER 
LOW SPOT AND COVER YOUR HEAD. AVOID OVERPASSES.

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

LAT...LON 3977 9589 3976 9642 3993 9648 4001 9619
      4000 9618 4000 9594
TIME...MOT...LOC 0305Z 269DEG 19KT 3987 9627

$$
000 
WWUS53 KTOP 070323
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
1021 PM CDT THU SEP 6 2007

KSC117-070331-
/O.CAN.KTOP.TO.W.0030.000000T0000Z-070907T0345Z/
MARSHALL-
1021 PM CDT THU SEP 6 2007

...THE TORNADO WARNING FOR NORTHEASTERN MARSHALL COUNTY HAS BEEN
CANCELLED...

AT 1021 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE 
SEVERE THUNDERSTORM WITH THE POSSIBLE TORNADO HAD EXITED THE 
AREA...THUS THE WARNING HAS BEEN CANCELLED.

A FLASH FLOOD WARNING FOR NORTHERN MARSHALL COUNTY CONTINUES UNTIL 
1130 PM. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT. VERY 
HEAVY RAIN AND CONTINUOUS LIGHTNING WILL CONTINUE.

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

LAT...LON 3977 9589 3977 9623 3999 9624 4001 9619
      4000 9618 4000 9594
TIME...MOT...LOC 0321Z 269DEG 19KT 3987 9616

$$

KSC131-070345-
/O.CON.KTOP.TO.W.0030.000000T0000Z-070907T0345Z/
NEMAHA-
1021 PM CDT THU SEP 6 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR NORTHERN
NEMAHA COUNTY...

AT 1017 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED NEAR BAILEYVILLE...OR ABOUT 25 MILES EAST OF
MARYSVILLE...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
SENECA...ONEIDA AND BERN.

IF A TORNADO APPROACHES...GO TO A BASEMENT OR SEEK SHELTER IN A
HALLWAY OR CLOSET ON THE LOWEST FLOOR OF THE BUILDING. USE BLANKETS
OR PILLOWS TO COVER YOUR HEAD AND ALWAYS STAY AWAY FROM WINDOWS.

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

LAT...LON 3977 9589 3977 9623 3999 9624 4001 9619
      4000 9618 4000 9594
TIME...MOT...LOC 0321Z 269DEG 19KT 3987 9616

$$
000 
WWUS53 KTOP 070331
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
1030 PM CDT THU SEP 6 2007

KSC131-070340-
/O.CAN.KTOP.TO.W.0030.000000T0000Z-070907T0345Z/
NEMAHA-
1030 PM CDT THU SEP 6 2007

...THE TORNADO WARNING FOR NORTHERN NEMAHA COUNTY HAS BEEN
CANCELLED...

AT 1030 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE 
SEVERE THUNDERSTORM WITH THE POSSIBLE TORNADO HAD WEAKENED AND NO 
LONGER APPEARED CAPABLE OF PRODUCING TORNADOES OR OTHER SEVERE 
WEATHER...THUS THE WARNING HAS BEEN CANCELLED.

A FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN NEMAHA COUNTY 
UNTIL 1130 PM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT AS 
WELL. VERY HEAVY RAIN...GUSTY WINDS AND DEADLY LIGHTNING ARE STILL 
LIKELY WITH THE THUNDERSTORMS.

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

LAT...LON 3977 9589 3977 9623 3999 9624 4001 9619
      4000 9618 4000 9594
TIME...MOT...LOC 0330Z 269DEG 19KT 3987 9610

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 7:23 PM CDTFlash Flood WarningTOPMarshall, Nemaha2 hr
Sep 6, 7:42 PM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha63 min
Sep 6, 8:19 PM CDTTornado WarningTOPMarshall, Nemaha26 min
Sep 6, 8:43 PM CDTTornado WarningTOPNemaha32 min
Sep 6, 8:46 PM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha59 min
Sep 6, 9:12 PM CDTTornado WarningTOPBrown, Nemaha29 min
Sep 6, 9:28 PM CDTFlash Flood WarningTOPMarshall, Nemaha2 hr
Sep 6, 9:30 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington45 min
Sep 6, 9:45 PM CDTSevere Thunderstorm WarningTOPNemaha45 min
Sep 6, 10:17 PM CDTSevere Thunderstorm WarningTOPBrown58 min
Sep 6, 10:28 PM CDTFlash Flood WarningTOPBrown4 hr
Sep 6, 10:41 PM CDTSevere Thunderstorm WarningTOPClay, Cloud, Ottawa49 min
Sep 6, 11:13 PM CDTSevere Thunderstorm WarningTOPGeary, Pottawatomie, Riley, Wabaunsee47 min
Sep 6, 11:29 PM CDTFlash Flood WarningTOPMarshall, Nemaha4 hr
Sep 6, 11:34 PM CDTFlash Flood WarningTOPClay, Cloud, Ottawa4 hr
Sep 6, 11:37 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Riley, Wabaunsee38 min
Sep 6, 11:52 PM CDTRiver Flood WarningTOPNemaha11 hr
Sep 7, 12:01 AM CDTSevere Thunderstorm WarningTOPJackson, Pottawatomie, Shawnee, Wabaunsee44 min
Sep 7, 12:20 AM CDTSevere Thunderstorm WarningTOPDouglas, Jefferson55 min
Sep 7, 1:40 AM CDTRiver Flood WarningTOPMarshall42 hr
Sep 7, 12:39 PM CDTRiver Flood WarningTOPMarshall18 hr

Nearby

Tornado Warnings in Kansas, 2007Every tornado warning in 2007Tornadoes in 2007

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.