Alert archive / Kansas / Tornado Warnings in 2011

Tornado Warning 2, NWS Kansas City, MO

May 21, 2011Doniphan County, Kansas; Holt County, Missouri

NWS Kansas City, MO issued this tornado warning at May 21, 2011, 6:39 PM CDT for Doniphan County, Kansas; Holt County, Missouri. It was in force for 36 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: May 21, 2011, 6:39 PM CDT (23:39 UTC)
Expired: May 21, 2011, 7:15 PM CDT
In force: 36 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Doniphan County, KS, Holt County, MO

The radar

The Topeka radar (KTWX), 130 km from the middle of the area, began a volume at 23:41 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
May 21, 6:45 PM CDT	HAIL 2.75	Highland, KS
May 21, 6:57 PM CDT	TORNADO	4 N Highland, 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
May 21, 5:34 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.7 hours before the alert went out and 105 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: 480 J/kg
Mixed-layer CIN: -193 J/kg
Mixed-layer LCL: 716 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

167 
WFUS53 KEAX 212339
TOREAX
KSC043-MOC087-220015-
/O.NEW.KEAX.TO.W.0002.110521T2339Z-110522T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
639 PM CDT SAT MAY 21 2011

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN DONIPHAN COUNTY IN NORTHEAST KANSAS...
  SOUTHEASTERN HOLT COUNTY IN NORTHWEST MISSOURI...

* UNTIL 715 PM CDT

* AT 638 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR HIGHLAND...AND MOVING EAST AT 20 MPH.  IN
  ADDITION TO A TORNADO...PING PONG BALL SIZE HAIL IS EXPECTED WITH
  THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  FOREST CITY...OREGON...IOWA POINT AND FANNING.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 68 AND 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3989 9534 3996 9534 4004 9504 3980 9498
      3977 9534 3988 9535
TIME...MOT...LOC 2339Z 259DEG 18KT 3987 9527
HAIL 1.50IN

$$

21

3 follow-up statements

506 
WWUS53 KEAX 212346
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
646 PM CDT SAT MAY 21 2011

KSC043-MOC087-220015-
/O.CON.KEAX.TO.W.0002.000000T0000Z-110522T0015Z/
DONIPHAN KS-HOLT MO-
646 PM CDT SAT MAY 21 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN HOLT AND
NORTHERN DONIPHAN COUNTIES UNTIL 715 PM CDT...

AT 643 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR HIGHLAND...MOVING EAST AT 20 MPH.  IN ADDITION
TO A TORNADO...LARGE DESTRUCTIVE HAIL UP TO BASEBALL SIZE IS EXPECTED
WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  FOREST CITY...OREGON...IOWA POINT AND FANNING.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 68 AND 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3989 9534 3996 9534 4004 9504 3980 9498
      3977 9534 3988 9535
TIME...MOT...LOC 2346Z 256DEG 17KT 3988 9525
HAIL 2.75IN

$$

21

979 
WWUS53 KEAX 220001
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
701 PM CDT SAT MAY 21 2011

KSC043-MOC087-220015-
/O.CON.KEAX.TO.W.0002.000000T0000Z-110522T0015Z/
DONIPHAN KS-HOLT MO-
701 PM CDT SAT MAY 21 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN HOLT AND
NORTHERN DONIPHAN COUNTIES UNTIL 715 PM CDT...

AT 657 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 2 SE OF 
IOWA POINT. THIS TORNADO WAS LOCATED NEAR FOREST CITY...OR 5 MILES 
NORTHEAST OF HIGHLAND...MOVING EAST AT 20 MPH.  IN ADDITION TO A 
TORNADO...LARGE DESTRUCTIVE HAIL UP TO BASEBALL SIZE IS EXPECTED 
WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  OREGON.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 68 AND 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3983 9522 3988 9529 3996 9528 4004 9504
      3980 9498
TIME...MOT...LOC 0001Z 258DEG 19KT 3992 9517
HAIL 2.75IN

$$

21

653 
WWUS53 KEAX 220009
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
709 PM CDT SAT MAY 21 2011

KSC043-MOC087-220015-
/O.CON.KEAX.TO.W.0002.000000T0000Z-110522T0015Z/
DONIPHAN KS-HOLT MO-
709 PM CDT SAT MAY 21 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN HOLT AND
NORTH CENTRAL DONIPHAN COUNTIES UNTIL 715 PM CDT...

AT 707 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR OREGON...OR 9 MILES NORTHEAST OF HIGHLAND...
MOVING EAST AT 20 MPH.  IN ADDITION TO A TORNADO...LARGE DESTRUCTIVE
HAIL UP TO BASEBALL SIZE IS EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF SOUTHEASTERN HOLT COUNTY.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 68 AND 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3986 9516 3989 9523 3998 9521 4004 9504
      3987 9500
TIME...MOT...LOC 0010Z 258DEG 19KT 3993 9511
HAIL 2.75IN

$$

21

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 5:57 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	33 min
May 21, 6:23 PM CDT	Severe Thunderstorm Warning	EAX	Doniphan	37 min
May 21, 6:27 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	24 min
May 21, 6:56 PM CDT	Severe Thunderstorm Warning	EAX	Doniphan	34 min
May 20, 8:05 PM CDT	River Flood Warning	EAX	Cooper, Saline	35 hr
May 20, 8:05 PM CDT	River Flood Warning	EAX	Cooper	23 hr
May 21, 5:50 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	40 min
May 21, 6:03 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	27 min
May 21, 6:25 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway	35 min
May 21, 6:57 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway	33 min

Nearby

Tornado Warnings in Kansas, 2011 Tornado Warnings in Missouri, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.