Alert archive / Kansas / Tornado Warnings in 2009

Tornado Warning 3, NWS Kansas City, MO

April 25, 2009Leavenworth County, Kansas

NWS Kansas City, MO issued this tornado warning at Apr 25, 2009, 8:35 PM CDT for Leavenworth County, Kansas. It was in force for 25 min. 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: Apr 25, 2009, 8:35 PM CDT (01:35 UTC)
Expired: Apr 25, 2009, 9:00 PM CDT
In force: 25 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

County Leavenworth County, KS

The radar

The Pleasant Hill radar (KEAX), 79 km from the middle of the area, began a volume at 01:37 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 25, 8:50 PM CDT	HAIL 0.88	5 Nw Basehor, KS
Apr 25, 8:50 PM CDT	HAIL 0.88	6 Nw Basehor, KS

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.

Issued	Product	Office	Lasted
Apr 25, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.6 hours before the alert went out and 51 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: 421 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 554 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 298 m²/s²
0-3 km storm-relative helicity: 389 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KEAX 260135
TOREAX
KSC103-260200-
/O.NEW.KEAX.TO.W.0003.090426T0135Z-090426T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
835 PM CDT SAT APR 25 2009

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LEAVENWORTH COUNTY IN NORTHEAST KANSAS...

* UNTIL 900 PM CDT

* AT 834 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR TONGANOXIE...AND MOVING NORTHEAST AT 20 MPH.
  THIS STORM HAS PRODUCED 70 MPH 6 WEST OF RENO.

* THIS TORNADIC STORM WILL BE NEAR...
  TONGANOXIE AROUND 845 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
JARBALO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES
OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF
NO SHELTER IS AVAILABLE... LIE FLAT IN THE NEAREST DITCH OR OTHER LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3926 9499 3906 9498 3905 9516 3904 9518
      3916 9517
TIME...MOT...LOC 0135Z 229DEG 17KT 3909 9514

$$

PC

3 follow-up statements

000 
WWUS53 KEAX 260147
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
847 PM CDT SAT APR 25 2009

KSC103-260200-
/O.CON.KEAX.TO.W.0003.000000T0000Z-090426T0200Z/
LEAVENWORTH KS-
847 PM CDT SAT APR 25 2009

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL LEAVENWORTH COUNTY
UNTIL 900 PM CDT...

AT 845 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED NEAR TONGANOXIE...MOVING NORTHEAST AT 20 MPH. THIS 
STORM WILL ALSO BE CAPABLE OF PRODUCING HAIL UP TO ONE INCH IN 
DIAMETER AND STRAIGHT LINE WINDS TO 60 MPH.

THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF CENTRAL LEAVENWORTH
COUNTY...INCLUDING THE FOLLOWING LOCATIONS JARBALO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR STORM
SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF
NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET
INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE... LIE FLAT
IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR
HANDS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3926 9499 3906 9498 3905 9516 3904 9518
      3916 9517
TIME...MOT...LOC 0146Z 229DEG 17KT 3912 9509

$$

PC

000 
WWUS53 KEAX 260153
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
853 PM CDT SAT APR 25 2009

KSC103-260200-
/O.CON.KEAX.TO.W.0003.000000T0000Z-090426T0200Z/
LEAVENWORTH KS-
853 PM CDT SAT APR 25 2009

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL LEAVENWORTH COUNTY
UNTIL 900 PM CDT...

AT 852 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED NEAR TONGANOXIE...MOVING NORTHEAST AT 20 MPH. THIS
STORM WILL ALSO BE CAPABLE OF PRODUCING HAIL TO ONE INCH DIAMETER AND
STRAIGHT LINE WINDS TO 60 MPH.

THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF CENTRAL LEAVENWORTH
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR STORM
SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF
NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET
INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE... LIE FLAT
IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR
HANDS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3926 9499 3910 9498 3910 9503 3910 9509
      3920 9510
TIME...MOT...LOC 0152Z 229DEG 19KT 3916 9504

$$

PC

000 
WWUS53 KEAX 260159
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
859 PM CDT SAT APR 25 2009

KSC103-260208-
/O.EXP.KEAX.TO.W.0003.000000T0000Z-090426T0200Z/
LEAVENWORTH KS-
859 PM CDT SAT APR 25 2009

...THE TORNADO WARNING FOR CENTRAL LEAVENWORTH COUNTY WILL EXPIRE AT
900 PM CDT...

AT 858 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE. A 
SEVERE THUNDERSTORM WARNING IS NOW IN EFFECT FOR AREAS TO THE EAST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3926 9499 3910 9498 3910 9503 3910 9509
      3920 9510
TIME...MOT...LOC 0158Z 229DEG 19KT 3918 9501

$$

PC

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 8:00 PM CDT	Special Weather Statement	EAX	Leavenworth	30 min
Apr 25, 8:20 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	25 min
Apr 25, 8:57 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	29 min
Apr 25, 11:27 PM CDT	Flash Flood Warning	EAX	Leavenworth	98 min
Apr 26, 1:38 AM CDT	High Wind Warning	EAX	Johnson, Linn, Miami	109 min

Nearby

Tornado Warnings in Kansas, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.