Alert archive / Kansas / Tornado Warnings in 2009

Tornado Warning 5, NWS Topeka, KS

April 25, 2009Douglas County, Jefferson County, Kansas

NWS Topeka, KS issued this tornado warning at Apr 25, 2009, 6:09 PM CDT for Douglas County, Jefferson County, Kansas. It was in force for 23 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: Apr 25, 2009, 6:09 PM CDT (23:09 UTC)
Expired: Apr 25, 2009, 6:32 PM CDT
In force: 23 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon

Counties Douglas County, KS, Jefferson County, KS

The radar

The Pleasant Hill radar (KEAX), 81 km from the middle of the area, began a volume at 23:10 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, 6:12 PM CDT	HAIL 1.75	Williamstown, 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, 3:36 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.2 hours before the alert went out and 41 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: 558 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 282 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.

000 
WFUS53 KTOP 252309
TORTOP
KSC045-087-252345-
/O.NEW.KTOP.TO.W.0005.090425T2309Z-090425T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
609 PM CDT SAT APR 25 2009

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN DOUGLAS COUNTY IN EAST CENTRAL KANSAS...
  SOUTHEASTERN JEFFERSON COUNTY IN NORTHEAST KANSAS...

* UNTIL 645 PM CDT

* AT 608 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CENTRAL
  LAWRENCE...MOVING NORTHEAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  NORTHEASTERN LAWRENCE AROUND 615 PM CDT...
  EXTREME NORTHEASTERN LAWRENCE AND EUDORA AROUND 620 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3883 9526 3895 9544 3922 9517 3920 9516
      3913 9517 3912 9518 3897 9518 3897 9509
      3898 9507 3898 9505 3896 9504 3892 9505
TIME...MOT...LOC 2309Z 222DEG 24KT 3896 9526

$$

HARDING

1 follow-up statement

000 
WWUS53 KTOP 252332
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
632 PM CDT SAT APR 25 2009

KSC045-087-252341-
/O.CAN.KTOP.TO.W.0005.000000T0000Z-090425T2345Z/
JEFFERSON-DOUGLAS-
632 PM CDT SAT APR 25 2009

...THE TORNADO WARNING FOR NORTHERN DOUGLAS AND SOUTHEASTERN
JEFFERSON COUNTIES HAS BEEN CANCELLED...

THIS INCLUDES THE KANSAS TURNPIKE BETWEEN MILE MARKERS 195 AND 206.

AT 631 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 TORNADO WATCH REMAINS IN EFFECT. STAY ALERT TO THE WEATHER.

LAT...LON 3883 9526 3895 9544 3922 9517 3920 9516
      3913 9517 3912 9518 3897 9518 3897 9509
      3898 9507 3898 9505 3896 9504 3892 9505
TIME...MOT...LOC 2331Z 222DEG 24KT 3907 9513

$$

HARDING

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:17 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	33 min
Apr 24, 8:15 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	45 min
Apr 25, 3:15 PM CDT	Flood Watch	TOP	Anderson, Brown, Clay, Coffey, Dickinson, Douglas and 14 more	44 hr
Apr 25, 3:58 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage, Wabaunsee	32 min
Apr 25, 4:47 PM CDT	Severe Thunderstorm Warning	TOP	Jefferson	28 min
Apr 25, 4:49 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Jefferson	26 min
Apr 25, 4:55 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage, Shawnee	50 min
Apr 25, 5:16 PM CDT	Tornado Warning	TOP	Douglas, Osage, Shawnee	29 min
Apr 25, 5:28 PM CDT	Tornado Warning	TOP	Douglas, Jefferson, Osage, Shawnee	47 min
Apr 25, 5:29 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage	31 min
Apr 25, 6:12 PM CDT	Areal Flood Advisory	TOP	Douglas	63 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.