Alert archive / Oklahoma / Tornado Warnings in 2005

Tornado Warning 24, NWS Tulsa, OK

April 21, 2005Cherokee County, Wagoner County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Apr 21, 2005, 8:40 PM CDT for Cherokee County, Wagoner County, Oklahoma. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 21, 2005, 8:40 PM CDT (01:40 UTC)
Expired: Apr 21, 2005, 9:45 PM CDT
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

Counties Cherokee County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 47 km from the middle of the area, began a volume at 01:41 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.

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 21, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.7 hours before the alert went out and 147 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: 1218 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KTSA 220141
TORTSA
OKC021-145-220245-
/O.NEW.KTSA.TO.W.0024.050422T0140Z-050422T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
840 PM CDT THU APR 21 2005

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA
  WAGONER COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 945 PM CDT

* AT 836 PM CDT...WEATHER SERVICE DOPPLER RADAR WAS TRACKING A       
  DANGEROUS THUNDERSTORM WITH A HISTORY OF PRODUCING TORNADOES  THE 
  MOST DANGEROUS PART OF THIS STORM WAS LOCATED 6 MILES NORTH OF     
  WAGONER...MOVING SOUTHEAST AT 15 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...HULBERT...
  PEGGS...SCRAPER...ELDON...TAHLEQUAH AND OAKS.

IF YOU ARE NEAR THE PATH OF THIS DANGEROUS STORM...TAKE COVER NOW IF
NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3617 9482 3580 9483 3589 9542 3608 9535
      3608 9511 3617 9511

$$

2 follow-up statements

000 
WWUS54 KTSA 220200
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
900 PM CDT THU APR 21 2005

OKC145-220210-
/O.CAN.KTSA.TO.W.0024.000000T0000Z-050422T0245Z/
WAGONER OK-
900 PM CDT THU APR 21 2005

...THE TORNADO WARNING FOR WAGONER COUNTY HAS BEEN CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
NORTHEAST OKLAHOMA.

THE TORNADIC THUNDERSTORM HAS MOVED SOUTHEAST OF THE AREA.

LAT...LON 3617 9482 3580 9483 3583 9523 3608 9521
      3608 9511 3617 9511

$$

OKC021-220245-
/O.CON.KTSA.TO.W.0024.000000T0000Z-050422T0245Z/
CHEROKEE OK-
900 PM CDT THU APR 21 2005

...A TORNADO WARNING CONTINUES UNTIL 945 PM CDT FOR CHEROKEE
COUNTY...

AT 858 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION.  THE MOST DANGEROUS PART 
OF THIS STORM WAS LOCATED 3 MILES WEST OF LOST CITY...MOVING 
SOUTHEAST AT 20 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...LOST CITY...
HULBERT...OAKS...TAHLEQUAH...SCRAPER AND ELDON.

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3617 9482 3580 9483 3583 9523 3608 9521
      3608 9511 3617 9511

$$

000 
WWUS54 KTSA 220218
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
918 PM CDT THU APR 21 2005

OKC021-220227-
/O.CAN.KTSA.TO.W.0024.000000T0000Z-050422T0245Z/
CHEROKEE OK-
918 PM CDT THU APR 21 2005

...THE TORNADO WARNING FOR CHEROKEE COUNTY HAS BEEN CANCELLED...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
TORNADO WARNING HAS BEEN CANCELLED.

GUSTY WINDS...SMALL HAIL AND VERY HEAVY RAIN WILL STILL BE POSSIBLE
WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY
MORNING FOR NORTHWESTERN ARKANSAS AND EASTERN OKLAHOMA.

LAT...LON 3617 9482 3580 9483 3583 9523 3608 9521
      3608 9511 3617 9511

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 21, 7:20 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Wagoner	55 min
Apr 21, 7:33 PM CDT	Severe Thunderstorm Warning	TSA	Mayes	57 min
Apr 21, 7:34 PM CDT	Tornado Warning	TSA	Rogers	26 min
Apr 21, 7:58 PM CDT	Tornado Warning	TSA	Mayes, Rogers, Wagoner	47 min
Apr 21, 8:17 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	88 min
Apr 21, 8:52 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	68 min
Apr 21, 9:29 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	46 min
Apr 21, 10:15 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	30 min
Apr 21, 10:44 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Sequoyah	46 min
Apr 21, 10:44 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	61 min
Apr 21, 11:02 PM CDT	Severe Thunderstorm Warning	TSA	Haskell	30 min
Apr 21, 11:11 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	49 min
Apr 21, 11:23 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	37 min
Apr 21, 11:59 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	46 min
Apr 22, 12:41 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	64 min

Nearby

Tornado Warnings in Oklahoma, 2005 Every tornado warning in 2005 Tornadoes in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.