Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 209, NWS Tulsa, OK

July 28, 2018Okfuskee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 28, 2018, 5:29 PM CDT for Okfuskee County, Oklahoma. It was in force for 34 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: Jul 28, 2018, 5:29 PM CDT (22:29 UTC)
Expired: Jul 28, 2018, 6:03 PM CDT
In force: 34 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Okfuskee County, OK

The radar

The Norman radar (KTLX), 72 km from the middle of the area, began a volume at 22:32 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.5 hours before the alert went out and 86 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: 707 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1357 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

310 
WUUS54 KTSA 282229
SVRTSA
OKC107-282315-
/O.NEW.KTSA.SV.W.0209.180728T2229Z-180728T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
529 PM CDT SAT JUL 28 2018

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southwestern Okfuskee County in east central Oklahoma...

* Until 615 PM CDT.

* At 529 PM CDT, a severe thunderstorm was located 4 miles southwest
  of Castle, moving south at 25 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations in or near the path include...
  Bearden...                        Castle...

This includes Interstate 40 in Oklahoma between mile markers 212 and
219.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3547 9655 3550 9633 3529 9626 3529 9644
      3546 9644 3546 9647 3545 9649 3544 9648
      3543 9650 3543 9652 3541 9654 3540 9653
      3539 9654 3541 9655 3544 9652 3545 9655
TIME...MOT...LOC 2229Z 352DEG 21KT 3542 9643 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

4 follow-up statements

599 
WWUS54 KTSA 282241
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
541 PM CDT SAT JUL 28 2018

OKC107-282315-
/O.CON.KTSA.SV.W.0209.000000T0000Z-180728T2315Z/
Okfuskee OK-
541 PM CDT SAT JUL 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN OKFUSKEE COUNTY...

At 541 PM CDT, a severe thunderstorm was located near Cromwell,
moving south at 20 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations in or near the path include...
Bearden...                        Castle...

This includes Interstate 40 in Oklahoma between mile markers 212 and
219.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3547 9655 3550 9633 3529 9626 3529 9644
      3546 9644 3546 9647 3545 9649 3544 9648
      3543 9650 3543 9652 3541 9654 3540 9653
      3539 9654 3541 9655 3544 9652 3545 9655
TIME...MOT...LOC 2241Z 355DEG 19KT 3537 9643 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

467 
WWUS54 KTSA 282249
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
549 PM CDT SAT JUL 28 2018

OKC107-282315-
/O.CON.KTSA.SV.W.0209.000000T0000Z-180728T2315Z/
Okfuskee OK-
549 PM CDT SAT JUL 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTH CENTRAL OKFUSKEE COUNTY...

At 549 PM CDT, a severe thunderstorm was located near Cromwell,
moving south at 25 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

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

This includes Interstate 40 in Oklahoma between mile markers 212 and
216.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3541 9635 3539 9629 3529 9626 3529 9644
      3540 9644
TIME...MOT...LOC 2249Z 352DEG 21KT 3532 9642 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

195 
WWUS54 KTSA 282254
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
554 PM CDT SAT JUL 28 2018

OKC107-282315-
/O.CON.KTSA.SV.W.0209.000000T0000Z-180728T2315Z/
Okfuskee OK-
554 PM CDT SAT JUL 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTH CENTRAL OKFUSKEE COUNTY...

At 554 PM CDT, a severe thunderstorm was located 4 miles southeast of
Cromwell, moving south at 25 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3538 9635 3535 9629 3529 9626 3529 9644
      3537 9643
TIME...MOT...LOC 2254Z 352DEG 21KT 3529 9641 

HAIL...1.50IN
WIND...70MPH
 
$$

315 
WWUS54 KTSA 282303
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
603 PM CDT SAT JUL 28 2018

OKC107-282313-
/O.CAN.KTSA.SV.W.0209.000000T0000Z-180728T2315Z/
Okfuskee OK-
603 PM CDT SAT JUL 28 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OKFUSKEE COUNTY
IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 3538 9635 3535 9629 3529 9626 3529 9644
      3537 9643
TIME...MOT...LOC 2302Z 352DEG 21KT 3524 9640 

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 2:54 PM CDT, 2 hours 35 minutes earlier.

Area forecast discussion, Jul 28, 2:54 PM CDT, 2 hours 35 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
254 PM CDT Sat Jul 28 2018

.DISCUSSION...
Will continue with low pops this evening as isolated
showers and thunderstorms may linger across portions
of the area as an MCV exits the region to the east.
Late Tonight and into Sunday morning will be the next round
of showers and thunderstorms across the region as a
thunderstorm complex sweeps in the area from Kansas. There
is the potential that the stronger storms within the thunderstorm
complex could produce damaging winds. Locally heavy rain
will also be a concern.

Additional thunderstorms will be possible Sunday afternoon in
the vicinity any outflow boundaries that will be leftover
from the morning thunderstorm complex. This activity would
most likely be from northwest Arkansas into southeast Oklahoma.
These thunderstorms will also the potential to be strong to
severe with damaging winds again the main concern.

More thunderstorms are expected Sunday night into Monday as a
frontal boundary sags through the area and as an upper level
trof sharpens as it moves south from the northern to central
Plains. The showers and thunderstorms are expected to come to
an Monday night as the upper level trof swings east of the
area.

Rainfall totals through Monday night will average 1 to 3 inches
across eastern Oklahoma and western Arkansas with locally higher
amounts possible.

Dry conditions with at or below normal temperatures are expected for
the remainder of the work week as a northwesterly flow aloft develops
across the plains and high pressure prevails at the surface.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   72  88  69  82 /  60  60  60  60
FSM   71  89  72  84 /  20  60  60  80
MLC   73  91  72  83 /  20  50  60  80
BVO   70  86  67  80 /  70  60  60  50
FYV   69  84  67  78 /  30  70  60  70
BYV   68  83  66  78 /  30  70  60  70
MKO   72  87  70  80 /  30  60  60  70
MIO   69  84  66  80 /  70  70  60  50
F10   71  88  70  81 /  30  60  70  70
HHW   73  97  74  87 /  20  60  60  80

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...None.
AR...None.
&&

LONG TERM....10

Hazardous weather outlook, Jul 28, 4:35 PM CDT, 54 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
435 PM CDT Sat Jul 28 2018

ARZ001-002-010-011-019-020-029-OKZ049-053>076-291030-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
435 PM CDT Sat Jul 28 2018

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...Today and Tonight.

SEVERE THUNDERSTORM.
	RISK...Elevated.
	AREA...Much of eastern Oklahoma and western Arkansas.
	ONSET...Ongoing and again late Tonight.

HEAVY RAIN.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...Late Tonight.

DISCUSSION...
Scattered thunderstorms will linger into the early evening
hours across portions of eastern Oklahoma and western Arkansas.
Some of these storms will be strong to severe with Hail to
the size of golf balls and 70 mph winds possible.

A thunderstorm complex is expected to move into northeast Oklahoma
late Tonight from Kansas. Damaging winds of around 70 mph will
be possible with this thunderstorm complex. Locally heavy rainfall
will also be possible with these thunderstorms.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Likely.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
SUNDAY...Severe Thunderstorm Potential...Dangerous Heat Potential.
MONDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
TUESDAY through FRIDAY...No Hazards.

EXTENDED DISCUSSION...
A storm complex will likely be ongoing across eastern Oklahoma
into northwest Arkansas Sunday morning with a continued threat
for damaging winds. Additional thunderstorms, some possibly strong
to severe, may redevelop by afternoon along outflow boundaries
across far eastern Oklahoma into northwest Arkansas. Locally heavy
rainfall is expected across portions of northeast Oklahoma and
northwest Arkansas.

Multiple rounds of storms are expected Sunday night thru Monday
night as an upper level storm system and cold front move through.
There will be some potential for severe weather and locally heavy
rainfall with these storms.

weather.gov/tulsa contains additional information.

In the hours before

Local storm report, Jul 28, 4:14 PM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
414 PM CDT SAT JUL 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     HAIL             HENRYETTA               35.44N 95.98W
07/28/2018  E1.00 INCH       OKMULGEE           OK   PUBLIC

            RELAYED BY LOCAL MEDIA

&&

RJS

Local storm report, Jul 28, 4:18 PM CDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
418 PM CDT SAT JUL 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     TSTM WND DMG     3 NW DEWAR              35.49N 95.98W
07/28/2018                   OKMULGEE           OK   EMERGENCY MNGR

            POWERLINE IN ROADWAY S 230 RD AND BRAMBLE SOUTHWEST OF
            SHULTER.

&&

RJS

Special weather statement, Jul 28, 4:20 PM CDT, 1 hour 9 minutes before

Special Weather Statement
National Weather Service Tulsa OK
420 PM CDT SAT JUL 28 2018

OKZ068-070-071-282215-
Muskogee OK-Cherokee OK-McIntosh OK-
420 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MCINTOSH...
SOUTHWESTERN CHEROKEE AND MUSKOGEE COUNTIES UNTIL 515 PM CDT...

At 420 PM CDT, strong thunderstorms were located along a line
extending from near Fort Gibson to 5 miles south of Muskogee to 4
miles east of Boynton. Movement was south at 20 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations in or near the path include...
Muskogee...                       Fort Gibson...
Checotah...                       Warner...
Webbers Falls...                  Oktaha...
Braggs...                         Rentiesville...
Greenleaf State Park...           Pumpkin Center...
Keefeton...                       Wainwright...
Summit...                         Onapa...

This includes Interstate 40 in Oklahoma between mile markers 259 and
283.

LAT...LON 3564 9507 3564 9513 3555 9513 3538 9528
      3540 9563 3572 9562 3575 9540 3581 9532
      3581 9527 3585 9523 3586 9523 3587 9524
      3589 9522
TIME...MOT...LOC 2120Z 345DEG 19KT 3580 9527 3567 9538 3565 9558

Special weather statement, Jul 28, 4:23 PM CDT, 1 hour 6 minutes before

Special Weather Statement
National Weather Service Tulsa OK
423 PM CDT SAT JUL 28 2018

OKZ058-282215-
Ottawa OK-
423 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN OTTAWA COUNTY UNTIL
515 PM CDT...

At 423 PM CDT, a strong thunderstorm was located over Miami, moving
east at 20 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations in or near the path include...
Miami...                          Commerce...
Quapaw...                         Wyandotte...
Ottawa...                         Peoria...
Twin Bridges State Park...

This includes Interstate 44 between mile markers 304 and 323.

LAT...LON 3674 9462 3680 9490 3694 9489 3699 9462
TIME...MOT...LOC 2123Z 274DEG 16KT 3688 9485

Local storm report, Jul 28, 4:34 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
434 PM CDT SAT JUL 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     HAIL             DEWAR                   35.46N 95.94W
07/28/2018  E2.50 INCH       OKMULGEE           OK   PUBLIC

            RELAYED BY LOCAL BROADCAST MEDIA

&&

RJS

Special weather statement, Jul 28, 4:59 PM CDT, 30 minutes before

Special Weather Statement
National Weather Service Tulsa OK
459 PM CDT SAT JUL 28 2018

OKZ065-282245-
Okfuskee OK-
459 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN OKFUSKEE COUNTY UNTIL 545
PM CDT...

At 459 PM CDT, a strong thunderstorm was located 3 miles northeast of
Boley, moving south at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations in or near the path include...
Okemah...                         Boley...
Paden...                          Bearden...
Castle...                         Mason...

This includes Interstate 40 in Oklahoma between mile markers 212 and
222.

LAT...LON 3561 9657 3562 9634 3529 9618 3529 9644
      3546 9644 3546 9647 3543 9650 3543 9652
      3546 9654 3544 9657 3543 9656 3542 9656
      3541 9654 3540 9653 3539 9655 3541 9658
      3540 9662
TIME...MOT...LOC 2159Z 343DEG 23KT 3552 9643

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 7:42 AM CDT	Special Weather Statement	TSA	Sequoyah	48 min
Jul 28, 1:41 PM CDT	Special Weather Statement	TSA	Rogers	34 min
Jul 28, 2:04 PM CDT	Special Weather Statement	TSA	Mayes	26 min
Jul 28, 2:13 PM CDT	Special Weather Statement	TSA	Wagoner	47 min
Jul 28, 2:33 PM CDT	Special Weather Statement	TSA	Craig	42 min
Jul 28, 2:42 PM CDT	Special Weather Statement	TSA	Okmulgee	48 min
Jul 28, 2:45 PM CDT	Special Weather Statement	TSA	Wagoner	45 min
Jul 28, 2:56 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okmulgee	64 min
Jul 28, 3:13 PM CDT	Special Weather Statement	TSA	Wagoner	47 min
Jul 28, 3:16 PM CDT	Special Weather Statement	TSA	Craig	44 min
Jul 28, 3:22 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee	38 min
Jul 28, 3:44 PM CDT	Special Weather Statement	TSA	Cherokee	46 min
Jul 28, 3:49 PM CDT	Special Weather Statement	TSA	Ottawa	41 min
Jul 28, 3:54 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	29 min
Jul 28, 3:58 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	40 min
Jul 28, 4:12 PM CDT	Special Weather Statement	TSA	Okfuskee	33 min
Jul 28, 4:20 PM CDT	Special Weather Statement	TSA	Muskogee	55 min
Jul 28, 4:23 PM CDT	Special Weather Statement	TSA	Ottawa	52 min
Jul 28, 4:41 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee	49 min
Jul 28, 4:59 PM CDT	Special Weather Statement	TSA	Okfuskee	46 min
Jul 28, 5:19 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg	45 min
Jul 28, 5:57 PM CDT	Special Weather Statement	TSA	Nowata	48 min
Jul 28, 6:21 PM CDT	Special Weather Statement	TSA	Nowata	39 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2018 Every severe thunderstorm warning 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.