Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 89, NWS Tulsa, OK

May 23, 2018Creek County, Okmulgee County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 23, 2018, 5:32 PM CDT for Creek County, Okmulgee County, Tulsa County, Oklahoma. It was in force for 18 min. 1 report 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 23, 2018, 5:32 PM CDT (22:32 UTC)
Expired: May 23, 2018, 5:50 PM CDT
In force: 18 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Creek County, OK, Okmulgee County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 45 km from the middle of the area, began a volume at 22:33 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 23, 5:35 PM CDT	TSTM WND DMG	Mounds, OK	12 INCH DIAMETER TREE LIMBS BLOWN DOWN. LARGE TREE BLOWN OVER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 3 minutes after it went out.

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 153 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: 722 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 981 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -73 m²/s²
0-3 km storm-relative helicity: -39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

867 
WUUS54 KTSA 232232
SVRTSA
OKC037-111-143-232315-
/O.NEW.KTSA.SV.W.0089.180523T2232Z-180523T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
532 PM CDT WED MAY 23 2018

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northeastern Creek County in northeastern Oklahoma...
  Northwestern Okmulgee County in northeastern Oklahoma...
  Southern Tulsa County in northeastern Oklahoma...

* Until 615 PM CDT

* At 532 PM CDT, a severe thunderstorm was located over Mounds,
  moving north at 25 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations in or near the path include...
  Tulsa...                          Broken Arrow...
  Sand Springs...                   Bixby...
  Sapulpa...                        Jenks...
  Glenpool...                       Kiefer...
  Mounds...                         Jenks Riverside Airport...
  Liberty...                        Gray...
  Hectorville...                    

This includes Interstate 44 between mile markers 208 and 227.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3616 9609 3611 9581 3584 9588 3581 9615
      3616 9619
TIME...MOT...LOC 2232Z 179DEG 22KT 3590 9605 

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

1 follow-up statement

652 
WWUS54 KTSA 232250
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
550 PM CDT WED MAY 23 2018

OKC037-111-143-232300-
/O.CAN.KTSA.SV.W.0089.000000T0000Z-180523T2315Z/
Creek OK-Okmulgee OK-Tulsa OK-
550 PM CDT WED MAY 23 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CREEK...
NORTHWESTERN OKMULGEE AND SOUTHERN TULSA COUNTIES IS CANCELLED...
                
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 has been cancelled.

LAT...LON 3616 9609 3611 9581 3584 9588 3581 9615
      3616 9619
TIME...MOT...LOC 2246Z 179DEG 22KT 3601 9605 

$$

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 May 23, 2:47 PM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, May 23, 2:47 PM CDT, 2 hours 45 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
247 PM CDT Wed May 23 2018

.DISCUSSION...
Isolated to scattered showers and thunderstorms continue this
Afternoon across eastern Oklahoma and western Arkansas in
the deep moisture plume in association with a weak mid-level
shortwave. Some of the storms have become strong this afternoon
with wind gusts approaching 50 mph. Locally heavy rainfall
has also been a concern due to the slow movement of the storms
with some locations recording around 1 inch of rain in less than
an hours time. Isolated to scattered showers and thunderstorms are
expected to persist into the early evening hours before diminishing.

Will once again see isolated to scattered showers and thunderstorms
across the area on Thursday as the same scenario plays out across
eastern Oklahoma and western Arkansas.

On Friday, we will see the upper level flow become more northwesterly
with a weak shortwave bringing chances of showers and thunderstorms to the
area Friday into Friday evening.

An upper level ridge builds over the region during the Holiday weekend
with limited chances of showers and thunderstorms. As of now it looks
like any system moving into the Southern United States from the Gulf of
Mexico will mainly influence areas of east of the Tulsa CWA.

Unseasonably warm conditions are expected to continue into next week
with Sunday expected to be the hottest day.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   68  88  69  91 /  20  40  10  20
FSM   68  88  68  92 /  30  50  20  20
MLC   66  87  68  91 /  30  40  10  10
BVO   66  87  67  91 /  20  30  10  30
FYV   66  84  66  87 /  30  50  20  30
BYV   65  84  64  87 /  30  50  20  40
MKO   67  86  68  90 /  30  50  10  20
MIO   66  85  67  89 /  30  50  10  30
F10   66  87  67  91 /  30  50  10  10
HHW   68  89  69  92 /  30  30  10  10

&&

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

LONG TERM....10

Hazardous weather outlook, May 23, 5:20 PM CDT, 12 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
520 PM CDT Wed May 23 2018

ARZ001-002-010-011-019-020-029-OKZ049-053>076-241030-
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-
520 PM CDT Wed May 23 2018

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

.DAY ONE...Late Afternoon and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...Ongoing.

HEAVY RAIN.
	RISK...Limited.
    AREA...Eastern Oklahoma and Northwest Arkansas.
    ONSET...Ongoing.

DISCUSSION...
Ongoing showers and thunderstorms across parts of Eastern Oklahoma
and Northwest Arkansas will remain possible into the early evening
hours. The stronger storms will be capable of becoming severe with
locally damaging winds and small size hail possible. Movement of
these storms continues to be slow going...which will allow for
periods of heavy rainfall which could create localized areas of
flash flooding. All of this activity is expected to weaken during
the evening hours with the loss of daytime heating.

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

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
THURSDAY THROUGH SATURDAY...Thunderstorm Potential.
SUNDAY...No Hazards.
MONDAY AND TUESDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
There will be a limited threat for thunderstorms for the next
several days across Eastern Oklahoma and Northwest Arkansas.
Storms will tend to form at peak heating in the afternoon and
diminish shortly after sunset with the loss of daytime heating.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, May 23, 3:40 PM CDT, 1 hour 52 minutes before

Special Weather Statement
National Weather Service Tulsa OK
340 PM CDT WED MAY 23 2018

ARZ019-029-232115-
Sebastian AR-Crawford AR-
340 PM CDT WED MAY 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CRAWFORD AND
NORTHEASTERN SEBASTIAN COUNTIES UNTIL 415 PM CDT...

At 339 PM CDT, a strong thunderstorm was located 4 miles southeast of
Van Buren. This storm was nearly stationary.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations in or near the path include...
Fort Smith...                     Van Buren...
Alma...                           Barling...
Lavaca...                         Mulberry...
Dyer...                           Kibler...
Central City...                   Concord...
Shibley...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 7 and 9.
 Interstate 540 between mile markers 1 and 6.

LAT...LON 3545 9407 3544 9408 3535 9408 3531 9430
      3544 9442 3551 9405 3548 9405 3547 9406
      3547 9405 3546 9405
TIME...MOT...LOC 2039Z 321DEG 1KT 3540 9428

Special weather statement, May 23, 4:50 PM CDT, 42 minutes before

Special Weather Statement
National Weather Service Tulsa OK
450 PM CDT WED MAY 23 2018

OKZ060-061-067-232230-
Tulsa OK-Rogers OK-Wagoner OK-
450 PM CDT WED MAY 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN ROGERS...NORTHWESTERN
WAGONER AND EAST CENTRAL TULSA COUNTIES UNTIL 530 PM CDT...

At 449 PM CDT, a strong thunderstorm was located 3 miles north of
Broken Arrow, moving southeast at 5 mph.

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

Locations in or near the path include...
Tulsa...                          Broken Arrow...
Bixby...                          Coweta...
Catoosa...                        Oneta...

This includes Interstate 44 between mile markers 226 and 237.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3618 9595 3622 9576 3603 9565 3599 9586
TIME...MOT...LOC 2149Z 335DEG 6KT 3611 9581

Special weather statement, May 23, 4:56 PM CDT, 36 minutes before

Special Weather Statement
National Weather Service Tulsa OK
456 PM CDT WED MAY 23 2018

OKZ065-066-070-071-232245-
Muskogee OK-Okmulgee OK-Okfuskee OK-McIntosh OK-
456 PM CDT WED MAY 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MCINTOSH...
NORTHWESTERN MUSKOGEE...OKMULGEE AND SOUTHEASTERN OKFUSKEE COUNTIES
UNTIL 545 PM CDT...

At 456 PM CDT, strong thunderstorms were located along a line
extending from 2 miles northwest of Okmulgee to 4 miles south of
Henryetta. Movement was northeast at 20 mph.

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

Locations in or near the path include...
Okmulgee...                       Henryetta...
Morris...                         Beggs...
Dewar...                          Schulter...
Grayson...                        Hoffman...
Preston...                        Bald Hill...
Okmulgee State Park...            Hitchita...
Bryant...                         Eram...

This includes Interstate 40 in Oklahoma between mile markers 231 and
252.

LAT...LON 3584 9571 3533 9574 3529 9611 3573 9611
TIME...MOT...LOC 2156Z 243DEG 15KT 3565 9599 3538 9601

Local storm report, May 23, 4:57 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
457 PM CDT WED MAY 23 2018

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

0443 PM     TSTM WND DMG     5 S OWASSO              36.20N 95.85W
05/23/2018                   TULSA              OK   NWS EMPLOYEE

            POWER POLE DOWN NEAR 46TH ST N AND HIGHWAY 169. SEVERAL
            BILLBOARDS DOWN NAER 36TH ST N AND HIGHWAY 169.

&&

JDS

Special weather statement, May 23, 5:01 PM CDT, 31 minutes before

Special Weather Statement
National Weather Service Tulsa OK
501 PM CDT WED MAY 23 2018

OKZ072-232230-
Sequoyah OK-
501 PM CDT WED MAY 23 2018

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

At 501 PM CDT, a strong thunderstorm was located over Brushy, moving
north at 10 mph.

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

Locations in or near the path include...
Sallisaw...                       Marble City...
Brushy Lake State Park...         Brushy...

LAT...LON 3546 9467 3548 9487 3564 9484 3562 9462
TIME...MOT...LOC 2201Z 190DEG 9KT 3554 9475

Special weather statement, May 23, 5:14 PM CDT, 18 minutes before

Special Weather Statement
National Weather Service Tulsa OK
514 PM CDT WED MAY 23 2018

OKZ060-064-066-232245-
Tulsa OK-Okmulgee OK-Creek OK-
514 PM CDT WED MAY 23 2018

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL CREEK...NORTH
CENTRAL OKMULGEE AND SOUTH CENTRAL TULSA COUNTIES UNTIL 545 PM CDT...

At 514 PM CDT, a strong thunderstorm was located near Mounds, moving
north at 5 mph.

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

Locations in or near the path include...
Bixby...                          Jenks...
Glenpool...                       Kiefer...
Beggs...                          Mounds...
Liberty...                        Hectorville...

LAT...LON 3591 9613 3600 9594 3581 9579 3573 9608
TIME...MOT...LOC 2214Z 199DEG 5KT 3585 9603

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 1:52 PM CDT	Special Weather Statement	TSA	Washington	23 min
May 23, 2:12 PM CDT	Special Weather Statement	TSA	Nowata	48 min
May 23, 2:22 PM CDT	Areal Flood Advisory	TSA	Nowata, Osage, Washington	113 min
May 23, 3:38 PM CDT	Special Weather Statement	TSA	Tulsa	37 min
May 23, 4:05 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	40 min
May 23, 4:21 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	24 min
May 23, 4:47 PM CDT	Areal Flood Advisory	TSA	Tulsa	118 min
May 23, 4:50 PM CDT	Special Weather Statement	TSA	Tulsa	40 min
May 23, 4:56 PM CDT	Special Weather Statement	TSA	Okmulgee	49 min
May 23, 5:01 PM CDT	Special Weather Statement	TSA	Sequoyah	29 min
May 23, 5:11 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	49 min
May 23, 5:14 PM CDT	Special Weather Statement	TSA	Okmulgee	31 min
May 23, 5:54 PM CDT	Special Weather Statement	TSA	Choctaw	36 min
May 23, 5:55 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	24 min
May 23, 5:59 PM CDT	Special Weather Statement	TSA	Tulsa	31 min
May 23, 6:04 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	7 min
May 23, 6:13 PM CDT	Special Weather Statement	TSA	McIntosh	32 min
May 23, 6:23 PM CDT	Special Weather Statement	TSA	Tulsa	37 min
May 23, 6:28 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Tulsa, Wagoner	47 min
May 23, 6:46 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	44 min
May 23, 6:49 PM CDT	Special Weather Statement	TSA	McIntosh	26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.