Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 242, NWS Tulsa, OK

August 10, 2018Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 10, 2018, 5:25 PM CDT for Pittsburg County, Oklahoma. It was in force for 35 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: Aug 10, 2018, 5:25 PM CDT (22:25 UTC)
Expired: Aug 10, 2018, 6:00 PM CDT
In force: 35 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Pittsburg County, OK

The radar

The Western Arkansas radar (KSRX), 139 km from the middle of the area, began a volume at 22:29 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, 10.4 hours before the alert went out and 154 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: 1864 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1104 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

298 
WUUS54 KTSA 102225
SVRTSA
OKC121-102300-
/O.NEW.KTSA.SV.W.0242.180810T2225Z-180810T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
525 PM CDT FRI AUG 10 2018

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  South central Pittsburg County in southeastern Oklahoma...

* Until 600 PM CDT.

* At 525 PM CDT, a severe thunderstorm was located near Mcalester
  Regional Airport, moving south at 5 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations in or near the path include...
  Mcalester...                      Krebs...
  Savanna...                        Alderson...
  Blanco...                         Mcalester Regional Airport...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3489 9591 3494 9571 3477 9555 3467 9582
TIME...MOT...LOC 2225Z 359DEG 5KT 3486 9578 

HAIL...0.88IN
WIND...60MPH
 
$$

Lacy

2 follow-up statements

361 
WWUS54 KTSA 102239
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
539 PM CDT FRI AUG 10 2018

OKC121-102300-
/O.CON.KTSA.SV.W.0242.000000T0000Z-180810T2300Z/
Pittsburg OK-
539 PM CDT FRI AUG 10 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTH CENTRAL PITTSBURG COUNTY...

At 537 PM CDT, a severe thunderstorm was located over Blanco, moving
south at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations in or near the path include...
Mcalester...                      Savanna...
Blanco...                         Mcalester Regional Airport...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3476 9560 3467 9582 3487 9587 3491 9574
TIME...MOT...LOC 2237Z 349DEG 18KT 3477 9577 

HAIL...<.75IN
WIND...60MPH
 
$$

Lacy

204 
WWUS54 KTSA 102251
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
551 PM CDT FRI AUG 10 2018

OKC121-102301-
/O.EXP.KTSA.SV.W.0242.000000T0000Z-180810T2300Z/
Pittsburg OK-
551 PM CDT FRI AUG 10 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PITTSBURG COUNTY
WILL EXPIRE AT 600 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However gusty winds
and heavy rain are still possible with this thunderstorm.

LAT...LON 3476 9560 3467 9582 3487 9587 3491 9574
TIME...MOT...LOC 2251Z 359DEG 5KT 3476 9577 

$$

Lacy

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 Aug 10, 4:02 PM CDT, 1 hour 23 minutes earlier.

Area forecast discussion, Aug 10, 4:02 PM CDT, 1 hour 23 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
402 PM CDT Fri Aug 10 2018

.DISCUSSION...
Scattered showers and thunderstorms will continue until around
sunset before dissipating. Damaging downburst winds will remain a
threat with any storm for at least the next couple hours. A repeat
performance is expected Saturday afternoon, with lesser chances
near the Kansas and Missouri borders to the north of a weak
frontal boundary that will drift south to near Highway 412 by
Saturday afternoon.

A closed upper low to our west will then become the main influence
on our weather from Sunday into the middle of next week.
Widespread showers and thunderstorms are expected, especially from
Monday into early Wednesday as this system drifts slowly
northeast. Locally heavy rainfall will be possible during this
time period as well. Clouds and rain will help keep daytime
temperatures well below the seasonal normals early next week.

Unsettled weather looks to continue late next week, with continued
chances of showers and thunderstorms, although coverage should
lessen by the end of the forecast period.

Stayed close to guidance temperatures the next couple days.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   72  93  71  88 /  20  30  20  40
FSM   72  93  71  89 /  20  30  20  40
MLC   70  90  69  86 /  20  30  20  40
BVO   66  92  65  89 /  20  20  20  40
FYV   65  89  64  86 /  20  30  20  40
BYV   68  91  67  87 /  20  30  20  40
MKO   70  91  69  86 /  20  30  20  40
MIO   69  92  68  89 /  20  20  20  40
F10   70  90  69  87 /  20  30  20  40
HHW   71  88  70  86 /  20  30  20  40

&&

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

&&

SHORT TERM...12
LONG TERM....05

PLATE

Hazardous weather outlook, Aug 10, 4:53 PM CDT, 32 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
453 PM CDT Fri Aug 10 2018

ARZ001-002-010-011-019-020-029-OKZ049-053>076-111015-
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-
453 PM CDT Fri Aug 10 2018

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

.DAY ONE...Through Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...Ongoing...but diminishing this evening.

DANGEROUS HEAT.
	RISK...Limited.
	AREA...Southeast Oklahoma and West Central Arkansas.
	ONSET...Ongoing...but diminishing this evening.

DISCUSSION...
A few strong to marginally severe storms will remain possible into
the evening hours with wind gusts to near 60 mph the main threat.
While low storm chances will remain possible overnight, much
of the activity looks to weaken by mid evening with the loss of
daytime heating.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
SATURDAY and SUNDAY...Thunderstorm Potential.
MONDAY and TUESDAY...Thunderstorm Potential...Heavy Rain Potential.
WEDNESDAY and THURSDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
A broad area of low pressure is forecast to remain over the
Southern Plains into next week. The result will be additional
thunderstorm chances each day across the region. The greater
thunderstorm potential looks to be during the first half of next
week as the area of low pressure looks to begin pushing through
the region. The potential for locally heavy rainfall will
be greatest during this time period as well.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Aug 10, 4:51 PM CDT, 34 minutes before

Special Weather Statement
National Weather Service Tulsa OK
451 PM CDT FRI AUG 10 2018

OKZ064-066-102215-
Okmulgee OK-Creek OK-
451 PM CDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CREEK AND
NORTHWESTERN OKMULGEE COUNTIES UNTIL 515 PM CDT...

At 450 PM CDT, strong thunderstorms were located along a line
extending from 3 miles south of Mounds to 6 miles northwest of Beggs.
Movement was south at 15 mph.

Wind gusts of 50 to 55 mph will be possible with these storms.

Locations in or near the path include...
Okmulgee...                       Beggs...
Mounds...                         Preston...
Liberty...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3586 9623 3588 9603 3586 9603 3586 9596
      3568 9588 3565 9629
TIME...MOT...LOC 2150Z 357DEG 14KT 3582 9606 3582 9614

Lacy

Special weather statement, Aug 10, 4:52 PM CDT, 33 minutes before

Special Weather Statement
National Weather Service Tulsa OK
452 PM CDT FRI AUG 10 2018

OKZ064-102215-
Creek OK-
452 PM CDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CREEK COUNTY UNTIL
515 PM CDT...

At 452 PM CDT, a strong thunderstorm was located 5 miles south of
Bristow, moving southeast at 15 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations in or near the path include...
Bristow...                        Slick...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3578 9653 3586 9632 3570 9619 3564 9629
      3564 9647
TIME...MOT...LOC 2152Z 334DEG 13KT 3576 9639

Lacy

Special weather statement, Aug 10, 5:02 PM CDT, 23 minutes before

Special Weather Statement
National Weather Service Tulsa OK
502 PM CDT FRI AUG 10 2018

OKZ049-102230-
Pushmataha OK-
502 PM CDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL PUSHMATAHA COUNTY
UNTIL 530 PM CDT...

At 502 PM CDT, a strong thunderstorm was located 4 miles west of
Clayton. This storm was nearly stationary.

Wind gusts up to 50 mph will be possible with this storm.

This storm will remain over mainly rural areas of north central
Pushmataha County.

LAT...LON 3461 9551 3467 9543 3461 9535 3455 9543
TIME...MOT...LOC 2202Z 125DEG 0KT 3461 9543

Lacy

Special weather statement, Aug 10, 5:06 PM CDT, 19 minutes before

Special Weather Statement
National Weather Service Tulsa OK
506 PM CDT FRI AUG 10 2018

OKZ065-102230-
Okfuskee OK-
506 PM CDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL OKFUSKEE COUNTY UNTIL 530
PM CDT...

At 506 PM CDT, a strong thunderstorm was located 5 miles southwest of
Okfuskee. This storm was nearly stationary.

Wind gusts of 50 to 55 mph will be possible with this storm.

This storm will remain over mainly rural areas of central Okfuskee
County.

This includes Interstate 40 in Oklahoma near mile marker 221.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3561 9627 3557 9619 3555 9619 3555 9615
      3554 9613 3541 9628 3552 9638
TIME...MOT...LOC 2206Z 313DEG 4KT 3553 9628

Lacy

Special weather statement, Aug 10, 5:11 PM CDT, 14 minutes before

Special Weather Statement
National Weather Service Tulsa OK
511 PM CDT FRI AUG 10 2018

OKZ068-102245-
Cherokee OK-
511 PM CDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHEROKEE COUNTY
UNTIL 545 PM CDT...

At 511 PM CDT, a strong thunderstorm was located 5 miles west of
Cookson, moving northeast at 5 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations in or near the path include...
Cherokee Landing State Park...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3577 9490 3564 9496 3567 9513 3568 9513
      3579 9506
TIME...MOT...LOC 2211Z 203DEG 6KT 3573 9502

Lacy

Special weather statement, Aug 10, 5:19 PM CDT, 6 minutes before

Special Weather Statement
National Weather Service Tulsa OK
519 PM CDT FRI AUG 10 2018

OKZ066-102245-
Okmulgee OK-
519 PM CDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL OKMULGEE COUNTY
UNTIL 545 PM CDT...

At 519 PM CDT, a strong thunderstorm was located near Morris. This
storm was nearly stationary.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations in or near the path include...
Okmulgee...                       Morris...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3564 9596 3571 9588 3564 9573 3552 9589
TIME...MOT...LOC 2219Z 317DEG 1KT 3565 9587

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 1:22 PM CDT	Special Weather Statement	TSA	Osage	23 min
Aug 10, 1:45 PM CDT	Special Weather Statement	TSA	Osage	30 min
Aug 10, 2:18 PM CDT	Severe Thunderstorm Warning	TSA	Osage	28 min
Aug 10, 2:38 PM CDT	Special Weather Statement	TSA	Pushmataha	37 min
Aug 10, 2:48 PM CDT	Special Weather Statement	TSA	Osage	27 min
Aug 10, 2:54 PM CDT	Severe Thunderstorm Warning	TSA	Osage	36 min
Aug 10, 3:09 PM CDT	Special Weather Statement	TSA	Pawnee	36 min
Aug 10, 3:17 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa	43 min
Aug 10, 3:19 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	41 min
Aug 10, 3:38 PM CDT	Special Weather Statement	TSA	Creek	37 min
Aug 10, 3:40 PM CDT	Special Weather Statement	TSA	Pawnee	35 min
Aug 10, 3:52 PM CDT	Special Weather Statement	TSA	Latimer	23 min
Aug 10, 3:54 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	36 min
Aug 10, 4:02 PM CDT	Special Weather Statement	TSA	Creek	28 min
Aug 10, 4:24 PM CDT	Special Weather Statement	TSA	Latimer	36 min
Aug 10, 4:25 PM CDT	Special Weather Statement	TSA	Latimer	35 min
Aug 10, 4:27 PM CDT	Special Weather Statement	TSA	Creek	33 min
Aug 10, 4:31 PM CDT	Special Weather Statement	TSA	Creek	29 min
Aug 10, 4:37 PM CDT	Special Weather Statement	TSA	Cherokee	23 min
Aug 10, 4:48 PM CDT	Special Weather Statement	TSA	LeFlore	27 min
Aug 10, 4:51 PM CDT	Special Weather Statement	TSA	Okmulgee	24 min
Aug 10, 4:52 PM CDT	Special Weather Statement	TSA	Creek	23 min
Aug 10, 5:02 PM CDT	Special Weather Statement	TSA	Pushmataha	28 min
Aug 10, 5:06 PM CDT	Special Weather Statement	TSA	Okfuskee	24 min
Aug 10, 5:09 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	36 min
Aug 10, 5:11 PM CDT	Special Weather Statement	TSA	Cherokee	34 min
Aug 10, 5:17 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	25 min
Aug 10, 5:19 PM CDT	Special Weather Statement	TSA	Okmulgee	26 min
Aug 10, 5:22 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	23 min
Aug 10, 5:41 PM CDT	Special Weather Statement	TSA	Pittsburg	34 min
Aug 10, 5:51 PM CDT	Special Weather Statement	TSA	Pittsburg	24 min
Aug 10, 6:38 PM CDT	Special Weather Statement	TSA	McIntosh	37 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.