Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 138, NWS Tulsa, OK

May 22, 20195 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 22, 2019, 6:47 PM CDT for 5 counties in Oklahoma. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 22, 2019, 6:47 PM CDT (23:47 UTC)
Expired: May 22, 2019, 7:30 PM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Creek County, OK, Osage County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 36 km from the middle of the area, began a volume at 23:49 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
May 22, 3:32 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.8 hours before the alert went out and 169 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1361 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 434 m²/s²
0-3 km storm-relative helicity: 338 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

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 22, 6:44 PM CDT, 3 minutes earlier.

Area forecast discussion, May 22, 6:44 PM CDT, 3 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
644 PM CDT Wed May 22 2019

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Convection this evening confined to mainly NE OK, and will impact
KBVO/KTUL/KRVS over the next several hours. MVFR cigs to IFR vsbys
in convection is expected. Outside of convection, MVFR/VFR cigs,
with remaining elements to to prevail as VFR through the period.

&&

.PREV DISCUSSION... /Issued 310 PM CDT Wed May 22 2019/

DISCUSSION...

The main concerns will be focused in the first 12 to 18 hours of
the forecast. Severe weather potential, some high end possible, as
well as dangerous flash flooding are expected.

Latest surface analysis shows a consolidating frontal zone
stretching roughly parallel and just north of I-44 this
afternoon. A mesolow was located near Stillwater. South of the
front, 70 dewpoints were common. Latest CAM guidance suggests that
warm advection and convergence near the boundary will result in
convective development by 21Z over central OK. Storms will move
quickly into northeast OK thru the afternoon and into the evening.
Fifty knots of southwest 500mb flow combined with 70 dewpoints
and strong instability yield conditions very conducive for
supercell development and very large hail. Low level hodographs
this afternoon are not overly impressive, but definitely improve
by 00Z. Tornado potential would also be maximized along the
boundary downstream from the mesolow, if it can be maintained.

With time this evening, mainly after 03Z, the boundary layer
should stabilize enough to reduce the tornado potential. However,
continued moisture flux with strengthening low level jet into the
boundary near the KS border should result in continued convective
development with possible training of storms during the overnight.
This will increase the flash flood potential, as these heavy rains
will fall on soils that have already seen widespread 5 to 8 inch
rains earlier in the week. The threat should wane by 12Z Thursday,
with convection focusing to the north and eventually west of our
area as mid level heights and temps rise. Will therefore maintain
the going flash flood watch thru 12Z.

Another boundary will make a push toward our region by Friday,
with increasing storm potential persisting thru the weekend mainly
across northeast OK. By early next week, mid level heights and
temps rise again and will provide another break. The latest ECMWF
is more aggressive and farther south with the ejection of the
western trough next week, bringing a front thru by Tuesday night.
Convection would then linger over portions of the region along the
stalled front into the middle of next week.

Temps will stay above normal thru the period.

Lacy

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch through Thursday morning for OKZ054>064-066-
     067.

AR...None.
&&

AVIATION.....23

Hazardous weather outlook, May 22, 4:36 PM CDT, 2 hours 11 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
436 PM CDT Wed May 22 2019

ARZ001-002-010-011-019-020-029-OKZ049-053>076-231045-
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-
436 PM CDT Wed May 22 2019

..Significant Severe Weather, Strong Tornado Potential, Life Threatening Flash
Flood Potential...

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

.DAY ONE...Through Tonight.

TORNADO.
	RISK...Elevated.
	AREA...Northeast Oklahoma.
	ONSET...Ongoing.

AREA AT GREATEST RISK...Along and Northwest of Interstate 44.

SEVERE THUNDERSTORM.
	RISK...Significant.
	AREA...Northeast Oklahoma.
	ONSET...Ongoing

	AREA AT GREATEST RISK...Along and Northwest of Interstate 44.

FLASH FLOOD.
	RISK...Elevated.
	AREA...Northeast Oklahoma.
	ONSET..Late this Afternoon or Early Evening.

HEAVY RAIN.
	RISK...Significant.
	AREA...Northeast Oklahoma.
	ONSET...Ongoing.

DISCUSSION...
Thunderstorms have developed across parts of central and northeast
Oklahoma Tonight. The airmass across the area is very unstable, and
with strong shear in place across the region, supercell thunderstorms
capable of producing strong tornadoes, very large hail to the
size of golf balls and 70 mph winds.

The severe threat will diminish later tonight. However, heavy rain
and the threat for flash flooding will continue through tonight.
Additional rain amounts of 1 to 3 inches from any strong to severe
storm will be quite possible, mainly to the north and northwest
of Interstate 44. Life threatening flash flooding will quickly
occur with these additional amounts that fall over already
flooded areas.

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

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
THURSDAY and FRIDAY...Thunderstorm Potential...High Wind Potential.
SATURDAY and SUNDAY...Thunderstorm Potential.
MONDAY...No Hazards.
TUESDAY...Thunderstorm Potential...Heavy Rain Potential.

EXTENDED DISCUSSION...
Thunderstorm chances will persist for the remainder of this week
and into the weekend, with the focus being parts of northeast
Oklahoma and at times, far northwest Arkansas. Given that this
area may not have sufficient time to dry out, flash flooding could
continue to be a concern, in addition to the expected long
duration mainstem river flooding.

While an increasing upper level ridge should keep much of the
area south of Interstate 44 dry into early next week, the weather
pattern should change somewhat by the middle of next week, leading
to more widespread precipitation chances.

weather.gov/tulsa contains additional information.

In the hours before

Local storm report, May 22, 6:08 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
608 PM CDT WED MAY 22 2019

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

0603 PM     TORNADO          3 E OKMULGEE            35.62N 95.91W
05/22/2019                   OKMULGEE           OK   TRAINED SPOTTER

&&

LACY

Local storm report, May 22, 6:11 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
611 PM CDT WED MAY 22 2019

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

0610 PM     HAIL             MOUNDS                  35.88N 96.06W
05/22/2019  E1.00 INCH       CREEK              OK   AMATEUR RADIO

&&

JDS

Local storm report, May 22, 6:13 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
613 PM CDT WED MAY 22 2019

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

0609 PM     TORNADO          3 E SPERRY              36.30N 95.94W
05/22/2019                   TULSA              OK   TRAINED SPOTTER

            BRIEF TOUCHDOWN

&&

LACY

Local storm report, May 22, 6:18 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
618 PM CDT WED MAY 22 2019

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

0613 PM     HAIL             3 W VERA                36.45N 95.93W
05/22/2019  E2.50 INCH       WASHINGTON         OK   STORM CHASER

&&

JDS

Local storm report, May 22, 6:30 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
630 PM CDT WED MAY 22 2019

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

0626 PM     HAIL             BALD HILL               35.74N 95.84W
05/22/2019  E1.25 INCH       OKMULGEE           OK   PUBLIC

&&

JDS

Local storm report, May 22, 6:38 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
638 PM CDT WED MAY 22 2019

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

0637 PM     TORNADO          2 NE HASKELL            35.84N 95.65W
05/22/2019                   MUSKOGEE           OK   TRAINED SPOTTER

            BRIEF TOUCHDOWN

&&

LACY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 9:42 PM CDT	River Flood Warning	TSA	Kay, Osage	39 hr
May 22, 3:07 AM CDT	Flash Flood Watch	TSA	Craig, Creek, Delaware, Mayes, Nowata, Okmulgee and 6 more	28 hr
May 22, 4:36 AM CDT	River Flood Warning	TSA	Tulsa	21 days
May 22, 8:39 AM CDT	Areal Flood Warning	TSA	Haskell, LeFlore, Muskogee, Sequoyah	5 days
May 22, 12:14 PM CDT	Areal Flood Warning	TSA	Mayes	3 days
May 22, 12:21 PM CDT	Areal Flood Warning	TSA	Mayes, Wagoner	48 hr
May 22, 2:35 PM CDT	River Flood Warning	TSA	Rogers, Wagoner	11 days
May 22, 4:05 PM CDT	Special Weather Statement	TSA	Okfuskee	55 min
May 22, 4:13 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	62 min
May 22, 4:29 PM CDT	Tornado Warning	TSA	Okfuskee, Okmulgee	46 min
May 22, 4:42 PM CDT	Tornado Warning	TSA	Okfuskee	48 min
May 22, 4:53 PM CDT	Tornado Warning Tornado observed	TSA	Creek, Okfuskee, Okmulgee	52 min
May 22, 5:02 PM CDT	Flash Flood Warning	TSA	Okfuskee, Okmulgee	4 hr
May 22, 5:11 PM CDT	Tornado Warning	TSA	Okfuskee, Okmulgee	49 min
May 22, 5:17 PM CDT	Special Weather Statement	TSA	Tulsa	28 min
May 22, 5:19 PM CDT	Special Weather Statement	TSA	Rogers	26 min
May 22, 5:24 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Tulsa	36 min
May 22, 5:31 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Rogers, Washington	44 min
May 22, 5:35 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	40 min
May 22, 5:36 PM CDT	Tornado Warning	TSA	Creek, Pawnee, Tulsa	23 min
May 22, 5:39 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	TSA	Okfuskee, Okmulgee	51 min
May 22, 5:43 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	47 min
May 22, 5:55 PM CDT	Tornado Warning	TSA	Nowata, Rogers	50 min
May 22, 6:01 PM CDT	Tornado Warning	TSA	Rogers, Tulsa, Washington	44 min
May 22, 6:02 PM CDT	Flash Flood Warning	TSA	Osage, Rogers, Tulsa, Washington	9 hr
May 22, 6:05 PM CDT	Tornado Warning Tornado observed	TSA	Muskogee, Okmulgee, Wagoner	40 min
May 22, 6:09 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa, Wagoner	36 min
May 22, 6:12 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Osage, Ottawa, Rogers, Tulsa and 1 more	63 min
May 22, 6:14 PM CDT	Flash Flood Warning	TSA	Craig, Nowata, Rogers	9 hr
May 22, 6:32 PM CDT	Tornado Warning	TSA	Craig, Ottawa	43 min
May 22, 6:35 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	115 min
May 22, 6:38 PM CDT	Flash Flood Warning	TSA	Craig, Nowata, Washington	9 hr
May 22, 6:45 PM CDT	Tornado Warning	TSA	Cherokee, Mayes, Wagoner	21 min
May 22, 6:48 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	27 min
May 22, 6:54 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	20 min
May 22, 6:58 PM CDT	Tornado Warning	TSA	Craig, Ottawa	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019 Every severe thunderstorm warning in 2019

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.