Alert archive / Oklahoma / Tornado Warnings in 2018

Tornado Warning 33, NWS Tulsa, OK

November 30, 2018Adair County, Delaware County, Oklahoma; Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Nov 30, 2018, 10:29 PM CST for Adair County, Delaware County, Oklahoma; Benton County, Arkansas. It was in force for 20 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: Nov 30, 2018, 10:29 PM CST (04:29 UTC)
Expired: Nov 30, 2018, 10:49 PM CST
In force: 20 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Observed
Damage threat: Considerable
Hail: 0.75 in

Counties Benton County, AR, Adair County, OK, Delaware County, OK

The radar

The Tulsa radar (KINX), 83 km from the middle of the area, began a volume at 04:27 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
Nov 30, 5:23 PM CST	Tornado Watch	SPC	8 hr
Nov 30, 6:40 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.5 hours before the alert went out and 110 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: 202 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 687 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 241 m²/s²
0-3 km storm-relative helicity: 266 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

736 
WFUS54 KTSA 010429
TORTSA
ARC007-OKC001-041-010500-
/O.NEW.KTSA.TO.W.0033.181201T0429Z-181201T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
1029 PM CST FRI NOV 30 2018

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  West central Benton County in northwestern Arkansas...
  Southeastern Delaware County in northeastern Oklahoma...
  Northwestern Adair County in northeastern Oklahoma...

* Until 1100 PM CST.
    
* At 1028 PM CST, a confirmed large and extremely dangerous tornado
  was located 6 miles northeast of Proctor, moving northeast at 45
  mph.

  This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado.

  IMPACT...You are in a life-threatening situation. Flying debris 
           may be deadly to those caught without shelter. Mobile 
           homes will be destroyed. Considerable damage to homes, 
           businesses, and vehicles is likely and complete 
           destruction is possible.

* Locations in or near the path include...
  Siloam Springs...                 West Siloam Springs...
  Colcord...                        Cherokee City...
  Natural Falls State Park...       

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3631 9448 3599 9468 3600 9476 3609 9480
      3635 9464
TIME...MOT...LOC 0428Z 205DEG 40KT 3605 9472 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN

$$

3 follow-up statements

745 
WWUS54 KTSA 010442
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1042 PM CST FRI NOV 30 2018

ARC007-OKC001-010451-
/O.CAN.KTSA.TO.W.0033.000000T0000Z-181201T0500Z/
Benton AR-Adair OK-
1042 PM CST FRI NOV 30 2018

...THE TORNADO WARNING FOR WEST CENTRAL BENTON AND NORTHWESTERN ADAIR
COUNTIES IS CANCELLED...

A Tornado Watch remains in effect until midnight CST for northeastern
Oklahoma. A Tornado Watch also remains in effect until 200 AM CST for
northwestern Arkansas.

LAT...LON 3634 9459 3624 9458 3616 9462 3616 9475
      3635 9464
TIME...MOT...LOC 0441Z 203DEG 39KT 3618 9468 

$$

OKC041-010500-
/O.CON.KTSA.TO.W.0033.000000T0000Z-181201T0500Z/
Delaware OK-
1042 PM CST FRI NOV 30 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CST FOR
SOUTHEASTERN DELAWARE COUNTY...
        
At 1041 PM CST, an extremely dangerous tornado was located 4 miles 
west of West Siloam Springs, moving northeast at 45 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

Locations in or near the path include...
West Siloam Springs...            Colcord...
Natural Falls State Park...       

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, an extremely dangerous and potentially deadly tornado is 
on the ground. To protect your life, TAKE COVER NOW! Move to a 
basement or an interior room on the lowest floor of a sturdy 
building. Avoid windows. If you are outdoors, in a mobile home, or 
in a vehicle, move to the closest substantial shelter and protect 
yourself from flying debris.

&&

LAT...LON 3634 9459 3624 9458 3616 9462 3616 9475
      3635 9464
TIME...MOT...LOC 0441Z 203DEG 39KT 3618 9468 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN

$$

921 
WWUS54 KTSA 010446
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1046 PM CST FRI NOV 30 2018

OKC041-010500-
/O.CON.KTSA.TO.W.0033.000000T0000Z-181201T0500Z/
Delaware OK-
1046 PM CST FRI NOV 30 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CST FOR
SOUTHEASTERN DELAWARE COUNTY...
        
At 1045 PM CST, a confirmed dangerous tornado was located 3 miles 
south of Colcord, moving northeast at 45 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

Locations in or near the path include...
Colcord...                        

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, an extremely dangerous and potentially deadly tornado is 
on the ground. To protect your life, TAKE COVER NOW! Move to a 
basement or an interior room on the lowest floor of a sturdy 
building. Avoid windows. If you are outdoors, in a mobile home, or 
in a vehicle, move to the closest substantial shelter and protect 
yourself from flying debris.

&&

LAT...LON 3634 9459 3624 9461 3619 9465 3620 9473
      3635 9464
TIME...MOT...LOC 0445Z 203DEG 39KT 3621 9468 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN

$$

556 
WWUS54 KTSA 010449
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1049 PM CST FRI NOV 30 2018

OKC041-010459-
/O.CAN.KTSA.TO.W.0033.000000T0000Z-181201T0500Z/
Delaware OK-
1049 PM CST FRI NOV 30 2018

...THE TORNADO WARNING FOR SOUTHEASTERN DELAWARE COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

A Tornado Watch remains in effect until midnight CST for northeastern
Oklahoma. A Tornado Watch also remains in effect until 200 AM CST for
northwestern Arkansas.

LAT...LON 3634 9459 3624 9461 3619 9465 3620 9473
      3635 9464
TIME...MOT...LOC 0448Z 205DEG 40KT 3626 9465 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 30, 6:20 PM CST	Severe Thunderstorm Warning	TSA	Adair, Delaware	35 min
Nov 30, 8:02 PM CST	Special Weather Statement	TSA	Pittsburg	28 min
Nov 30, 8:03 PM CST	Special Weather Statement	TSA	Choctaw	27 min
Nov 30, 8:14 PM CST	Special Weather Statement	TSA	Creek	61 min
Nov 30, 8:30 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg	60 min
Nov 30, 8:32 PM CST	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	58 min
Nov 30, 8:41 PM CST	Tornado Warning	TSA	Haskell, Muskogee, Pittsburg	49 min
Nov 30, 8:48 PM CST	Special Weather Statement	TSA	Osage	57 min
Nov 30, 9:07 PM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee, Washington	53 min
Nov 30, 9:12 PM CST	Severe Thunderstorm Warning	TSA	Creek, Muskogee, Nowata, Okfuskee, Okmulgee, Osage and 4 more	63 min
Nov 30, 9:19 PM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, Muskogee, Sequoyah	41 min
Nov 30, 9:26 PM CST	Tornado Warning	TSA	Adair, Cherokee, Haskell, Muskogee, Sequoyah	49 min
Nov 30, 9:39 PM CST	Tornado Warning	TSA	Nowata, Rogers, Tulsa, Washington	25 min
Nov 30, 9:49 PM CST	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, Pittsburg, Pushmataha	56 min
Nov 30, 9:59 PM CST	Tornado Warning Tornado observedConsiderable damage threat	TSA	Adair, Cherokee	46 min
Nov 30, 10:01 PM CST	Severe Thunderstorm Warning	TSA	Craig, Nowata, Washington	44 min
Nov 30, 10:08 PM CST	Tornado Warning	TSA	Latimer, Pushmataha	23 min
Nov 30, 10:12 PM CST	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers, Wagoner	63 min
Nov 30, 10:14 PM CST	Severe Thunderstorm Warning	TSA	Cherokee, Haskell, McIntosh, Muskogee, Pittsburg, Sequoyah and 1 more	46 min
Nov 30, 10:18 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pushmataha, Sequoyah	57 min
Nov 30, 10:39 PM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Haskell, Sequoyah	53 min
Nov 30, 10:50 PM CST	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	55 min
Nov 30, 10:52 PM CST	Severe Thunderstorm Warning	TSA	Cherokee, Craig, Delaware, Mayes, Ottawa, Wagoner	53 min
Nov 30, 11:09 PM CST	Tornado Warning	TSA	Sequoyah	21 min
Nov 30, 6:03 PM CST	Special Weather Statement	TSA	Franklin	42 min
Nov 30, 6:22 PM CST	Tornado Warning	TSA	Franklin	38 min
Nov 30, 6:55 PM CST	Special Weather Statement	TSA	Franklin	35 min
Nov 30, 10:37 PM CST	Severe Thunderstorm Warning	TSA	Crawford, Washington	38 min
Nov 30, 11:16 PM CST	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	44 min
Nov 30, 11:19 PM CST	Severe Thunderstorm Warning	TSA	Crawford, Madison, Washington	56 min
Nov 30, 11:21 PM CST	Areal Flood Advisory	TSA	Crawford, Franklin, Sebastian	3 hr
Nov 30, 11:25 PM CST	Severe Thunderstorm Warning	TSA	Benton, Washington	51 min
Nov 30, 11:51 PM CST	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	41 min

Nearby

Tornado Warnings in Oklahoma, 2018 Tornado Warnings in Arkansas, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.