Alert archive / Oklahoma / Special Weather Statements in 2017

Special Weather Statement, NWS Tulsa, OK

May 11, 2017Muskogee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at May 11, 2017, 6:55 PM CDT for Muskogee 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: May 11, 2017, 6:55 PM CDT (23:55 UTC)
Expired: May 11, 2017, 7:30 PM CDT
In force: 35 min
Issued by: NWS Tulsa, OK

County Muskogee County, OK

The radar

The Tulsa radar (KINX), 64 km from the middle of the area, began a volume at 23:53 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 nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.9 hours before the alert went out and 167 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: 592 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 1262 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 11, 6:35 PM CDT, 20 minutes earlier.

Area forecast discussion, May 11, 6:35 PM CDT, 20 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
635 PM CDT Thu May 11 2017

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Convective line has pushed past TUL/BVO/RVS and these sites are
likely done with severe storms for the evening. There may be
isolated storms later this evening as the upper low comes east.
For the NW AR TAFs, storms will arrive between 01z-03z, possibly
with some wind. It is not guaranteed that KMLC or KFSM will see
storms at the terminal, but there will be tempo groups based on
latest short term guidance. Low clouds are likely to develop
overnight as upper low approaches.

&&

.PREV DISCUSSION... /Issued 222 PM CDT Thu May 11 2017/

DISCUSSION...
Main forecast concern is the ongoing severe thunderstorm and heavy
rain potential across much of eastern Oklahoma and western
Arkansas.

Widespread thunderstorm development continues across eastern and
northern Oklahoma early this afternoon and will continue into at
least early to mid evening as the upper low in northwest Oklahoma
approaches and eventually moves overhead. The strongest storms
this afternoon and early evening should be north of Interstate 40,
where the greatest instabilities are located. This area will also
be beneath the track of the upper low and the coldest temperatures
aloft. Very large hail, potentially to baseball size, will be the
primary severe weather threat, in addition to damaging winds.
However, a very localized tornado threat will also continue near
and just north of Interstate 44 as a result of a lingering
boundary, a scenario supported by local model data.

In addition to the severe weather threat, locally heavy rainfall
from the strongest thunderstorms could cause flash flooding,
especially in parts of northeast Oklahoma that saw a lot of rain
last night and early this morning. The Flash Flood Watch will
continue through mid evening.

Additional thunderstorms may redevelop farther south into
southeast Oklahoma during the mid to late evening hours, which
would continue to have a severe potential, albeit lesser than the
storms to the north. Showers will continue into the day on
Friday, especially across far eastern Oklahoma and western
Arkansas, with a clearing from west to east through the day.

Cooler temperatures will follow the upper low and attendant cold
front for Friday and even into Saturday, before southerly winds
and above normal temperatures make a return on Sunday. Warm and
dry weather will persist into early next week, with low
thunderstorm chances returning toward the middle part of the week.
The next best chance of thunderstorms, including some severe
weather potential, should hold off until the Thursday-Friday time
frame.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   60  75  51  79 /  80  20   0   0
FSM   62  75  53  80 /  80  50   0   0
MLC   60  73  52  79 /  60  20   0   0
BVO   58  74  46  79 /  80  10   0   0
FYV   58  71  46  76 /  80  50   0   0
BYV   58  70  49  76 /  80  50   0   0
MKO   59  73  51  79 /  70  30   0   0
MIO   59  73  49  78 /  80  20   0   0
F10   59  73  51  78 /  60  20   0   0
HHW   61  74  54  80 /  60  10   0   0

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch until 10 PM CDT this evening for OKZ054>063-
     067>069.

AR...Flash Flood Watch until 10 PM CDT this evening for ARZ001-002-
     010-011.

&&

LONG TERM....30
AVIATION...06

CORFIDI

Hazardous weather outlook, May 11, 4:52 PM CDT, 2 hours 3 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
452 PM CDT Thu May 11 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-121045-
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-
452 PM CDT Thu May 11 2017

...Severe thunderstorms ongoing this afternoon with large hail and damaging winds likely...

...Flash Flood Watch in effect for NE OK/NW AR through 10 PM...

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

.DAY ONE...This afternoon and Tonight.
TORNADO.
RISK...Elevated.
AREA...Northeast OK mainly north of a line from Okmulgee to Tahlequah.
ONSET...Ongoing.

SEVERE THUNDERSTORM.
RISK...Critical.
AREA...Eastern Oklahoma and Western Arkansas.
ONSET...Ongoing.

AREA AT GREATEST RISK...Eastern Oklahoma mainly north of
Interstate 40. Isolated severe storms are possible across SE OK
this evening.

FLASH FLOOD.
RISK...Limited.
AREA...Northeast Oklahoma and northwest Arkansas.
ONSET...Ongoing.

HEAVY RAIN.
RISK...Elevated.
AREA...Northeast Oklahoma and northwest Arkansas.
ONSET...Ongoing.

DISCUSSION...
Severe thunderstorms are ongoing this afternoon across northeast
Oklahoma. The leading edge of a line of storms was moving across
Osage, Pawnee and Creek Counties and will affect portions of
Bartlesville and the Tulsa metro area between 5 and 6 PM. Storms
will affect far northeast Oklahoma including Vinita, Pryor and
Muskogee after 7 PM. Strong wind fields and moderate instability
will support isolated tornadoes with this activity in addition to
hail and damaging winds. In addition to severe weather, flash
flooding is likely in portions of northeast Oklahoma.

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

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY through MONDAY...No Hazards.
TUESDAY and Wednesday...Thunderstorm Potential.

EXTENDED DISCUSSION...
Cooler and settled conditions will settle across the area from
west to east on Friday. Warmer temperatures are expected through
the weekend and will continue into at least the first part of next
week. Thunderstorm chances will be on the increase once again in
the Tuesday and Wednesday as an upper system to the northwest
begins to impact the region.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Severe warnings will likely continue through the early evening
hours for northeast Oklahoma. Listen for the latest information
for your area and take appropriate severe weather preparedness
actions.

weather.gov/tulsa Contains additional information.

CORFIDI

In the hours before

Local storm report, May 11, 6:14 PM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
614 PM CDT THU MAY 11 2017

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

0612 PM     HAIL             BROKEN ARROW            36.05N 95.79W
05/11/2017  E0.88 INCH       TULSA              OK   EMERGENCY MNGR

            ELM AND 9TH STREET IN BROKEN ARROW.

&&

JDS

Special weather statement, May 11, 6:30 PM CDT, 25 minutes before

Special Weather Statement
National Weather Service Tulsa OK
630 PM CDT THU MAY 11 2017

OKZ057-058-061>063-120015-
Craig OK-Rogers OK-Delaware OK-Ottawa OK-Mayes OK-
630 PM CDT THU MAY 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CRAIG...NORTHEASTERN
ROGERS...NORTHWESTERN DELAWARE...SOUTHWESTERN OTTAWA AND NORTHERN
MAYES COUNTIES UNTIL 715 PM CDT...

At 629 PM CDT, strong thunderstorms were located along a line
extending from 5 miles west of White Oak to 2 miles north of Adair to
3 miles west of Pryor Creek. Movement was east at 35 mph.

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

Locations in or near the path include...
Vinita...                         Pryor...
Pryor Creek...                    Afton...
Langley...                        Adair...
Bernice...                        Ketchum...
Spavinaw...                       Disney...
Big Cabin...                      Pensacola...
Hoot Owl...                       Cherokee State Park...
Spavinaw State Park...            Cleora...
Chloeta...                        White Oak...
Bernice State Park...             Strang...

This includes Interstate 44 between mile markers 267 and 296.

A severe thunderstorm watch remains in effect until 900 PM CDT for
northeastern Oklahoma.

LAT...LON 3678 9497 3650 9484 3632 9494 3628 9545
      3645 9536 3661 9543 3669 9543
TIME...MOT...LOC 2329Z 262DEG 30KT 3662 9536 3647 9528 3628 9538

Lacy

Local storm report, May 11, 6:37 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
637 PM CDT THU MAY 11 2017

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

0632 PM     TSTM WND GST     1 N PRYOR               35.99N 94.32W
05/11/2017  E70 MPH          WASHINGTON         AR   EMERGENCY MNGR

&&

JDS

Local storm report, May 11, 6:54 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TULSA OK
654 PM CDT THU MAY 11 2017

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

0632 PM     TSTM WND GST     1 N PRYOR               36.32N 95.32W
05/11/2017  E70.00 MPH       MAYES              OK   EMERGENCY MNGR

&&

JDS

Special weather statement, May 11, 6:55 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Tulsa OK
655 PM CDT THU MAY 11 2017

OKZ066-070-071-120030-
Muskogee OK-Okmulgee OK-McIntosh OK-
655 PM CDT THU MAY 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MCINTOSH...CENTRAL
MUSKOGEE AND EAST CENTRAL OKMULGEE COUNTIES UNTIL 730 PM CDT...

At 654 PM CDT, a strong thunderstorm was located 5 miles east of
Morris, moving east at 40 mph.

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

Locations in or near the path include...
Muskogee...                       Warner...
Oktaha...                         Boynton...
Council Hill...                   Rentiesville...
Keefeton...                       Wainwright...
Summit...                         Hitchita...
Eram...

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.

&&

A severe thunderstorm watch remains in effect until 900 PM CDT for
southeastern, northeastern and east central Oklahoma.

LAT...LON 3552 9584 3570 9585 3577 9528 3550 9527
TIME...MOT...LOC 2354Z 266DEG 36KT 3562 9576

Special weather statement, May 11, 6:55 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Tulsa OK
655 PM CDT THU MAY 11 2017

OKZ062-063-067-068-120030-
Cherokee OK-Delaware OK-Wagoner OK-Mayes OK-
655 PM CDT THU MAY 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN DELAWARE...SOUTHERN
MAYES...NORTHEASTERN WAGONER AND NORTHWESTERN CHEROKEE COUNTIES UNTIL
730 PM CDT...

At 655 PM CDT, a strong thunderstorm was located 5 miles south of
Chouteau, moving east at 30 mph.

Nickel size hail will be possible with this storm.

Locations in or near the path include...
Chouteau...                       Locust Grove...
Peggs...                          Rose...
Sportsmen Acres Community...      Mazie...
Murphy...

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.

A severe thunderstorm watch remains in effect until 900 PM CDT for
northeastern and east central Oklahoma.

LAT...LON 3610 9493 3604 9542 3611 9544 3617 9544
      3632 9497
TIME...MOT...LOC 2355Z 254DEG 28KT 3611 9537

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 9:31 PM CDT	Special Weather Statement	TSA	Creek, Pawnee	44 min
May 10, 9:41 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	34 min
May 10, 10:07 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	38 min
May 10, 10:33 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	42 min
May 10, 10:43 PM CDT	Special Weather Statement	TSA	Tulsa, Wagoner	47 min
May 10, 11:06 PM CDT	Special Weather Statement	TSA	Mayes, Nowata, Rogers, Washington	39 min
May 10, 11:11 PM CDT	Special Weather Statement	TSA	Wagoner	34 min
May 10, 11:15 PM CDT	Special Weather Statement	TSA	Craig	30 min
May 10, 11:36 PM CDT	Special Weather Statement	TSA	Craig, Ottawa	39 min
May 10, 11:38 PM CDT	Special Weather Statement	TSA	Delaware, Mayes	52 min
May 10, 11:55 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	35 min
May 10, 11:59 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	46 min
May 11, 6:28 AM CDT	Special Weather Statement	TSA	Tulsa	32 min
May 11, 6:50 AM CDT	Special Weather Statement	TSA	Tulsa	25 min
May 11, 7:18 AM CDT	Special Weather Statement	TSA	Washington	27 min
May 11, 7:33 AM CDT	Special Weather Statement	TSA	Rogers	27 min
May 11, 7:42 AM CDT	Special Weather Statement	TSA	Washington	33 min
May 11, 7:53 AM CDT	Special Weather Statement	TSA	Mayes	37 min
May 11, 8:19 AM CDT	Special Weather Statement	TSA	Delaware	26 min
May 11, 8:27 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	48 min
May 11, 10:53 AM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 6 more	11 hr
May 11, 1:02 PM CDT	Special Weather Statement	TSA	Muskogee	28 min
May 11, 1:10 PM CDT	Special Weather Statement	TSA	Okfuskee	35 min
May 11, 1:17 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee	28 min
May 11, 1:34 PM CDT	Special Weather Statement	TSA	Tulsa	26 min
May 11, 1:43 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	47 min
May 11, 1:52 PM CDT	Areal Flood Advisory	TSA	Creek, Muskogee, Okmulgee, Osage, Rogers, Tulsa and 1 more	113 min
May 11, 1:53 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	52 min
May 11, 2:02 PM CDT	Tornado Warning	TSA	Rogers	28 min
May 11, 2:11 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	34 min
May 11, 2:19 PM CDT	Special Weather Statement	TSA	Craig	26 min
May 11, 2:24 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	36 min
May 11, 2:28 PM CDT	River Flood Warning	TSA	Ottawa	3 days
May 11, 2:29 PM CDT	Tornado Warning	TSA	Rogers	15 min
May 11, 2:31 PM CDT	Special Weather Statement	TSA	Latimer	29 min
May 11, 2:33 PM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers and 1 more	57 min
May 11, 2:41 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	34 min
May 11, 2:52 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	38 min
May 11, 2:57 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	13 min
May 11, 2:58 PM CDT	Special Weather Statement	TSA	LeFlore	32 min
May 11, 3:17 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Nowata, Ottawa, Rogers	4 hr
May 11, 3:20 PM CDT	Special Weather Statement	TSA	LeFlore	25 min
May 11, 3:22 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	53 min
May 11, 3:38 PM CDT	Severe Thunderstorm Warning	TSA	Osage	52 min
May 11, 3:50 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	40 min
May 11, 4:16 PM CDT	Severe Thunderstorm Warning	TSA	Osage	44 min
May 11, 4:22 PM CDT	Severe Thunderstorm Warning	TSA	Osage	23 min
May 11, 4:25 PM CDT	Areal Flood Advisory	TSA	Osage, Pawnee	3 hr
May 11, 4:25 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	50 min
May 11, 4:31 PM CDT	Tornado Warning	TSA	Osage	29 min
May 11, 4:33 PM CDT	Tornado Warning	TSA	Osage	27 min
May 11, 4:46 PM CDT	Tornado Warning	TSA	Osage, Washington	29 min
May 11, 4:52 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	38 min
May 11, 5:05 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Mayes, Okmulgee, Osage, Rogers, Tulsa and 2 more	40 min
May 11, 5:06 PM CDT	Tornado Warning	TSA	Nowata, Rogers, Washington	24 min
May 11, 5:24 PM CDT	Tornado Warning	TSA	Nowata, Rogers, Washington	18 min
May 11, 5:42 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers, Tulsa	48 min
May 11, 5:52 PM CDT	Tornado Warning	TSA	Rogers	23 min
May 11, 6:04 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	41 min
May 11, 6:10 PM CDT	Tornado Warning	TSA	Mayes, Rogers	16 min
May 11, 6:24 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Wagoner	51 min
May 11, 6:30 PM CDT	Special Weather Statement	TSA	Mayes	45 min
May 11, 6:32 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	28 min
May 11, 6:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	52 min
May 11, 12:13 AM CDT	Special Weather Statement	TSA	Benton	47 min
May 11, 12:20 AM CDT	Severe Thunderstorm Warning	TSA	Benton	55 min
May 11, 12:32 AM CDT	Special Weather Statement	TSA	Washington	43 min
May 11, 12:42 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	48 min
May 11, 1:17 AM CDT	Special Weather Statement	TSA	Carroll, Madison	43 min
May 11, 9:34 AM CDT	Special Weather Statement	TSA	Benton	26 min
May 11, 9:58 AM CDT	Special Weather Statement	TSA	Benton	47 min
May 11, 10:00 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll	30 min
May 11, 10:29 AM CDT	Severe Thunderstorm Warning	TSA	Carroll	31 min
May 11, 2:28 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	32 min
May 11, 3:00 PM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	30 min
May 11, 3:29 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	17 min

Nearby

Special Weather Statements in Oklahoma, 2017 Every special weather statement in 2017

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.