Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 202, NWS Tulsa, OK

June 18, 2019Osage County, Tulsa County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 18, 2019, 9:01 PM CDT for Osage County, Tulsa County, Washington County, Oklahoma. It was in force for 44 min. 2 reports 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: Jun 18, 2019, 9:01 PM CDT (02:01 UTC)
Expired: Jun 18, 2019, 9:45 PM CDT
In force: 44 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.75 in
Wind: 60.0 mph

Counties Osage County, OK, Tulsa County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 60 km from the middle of the area, began a volume at 02:04 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
Jun 18, 9:30 PM CDT	TSTM WND GST 71	Skiatook, OK
Jun 18, 9:39 PM CDT	HAIL 1	Skiatook, OK

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 2 storm reports to this severe thunderstorm warning; the first came 29 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

Springfield, MO (KSGF), launched 00:00Z, 2.0 hours before the alert went out and 217 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: 541 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

244 
WUUS54 KTSA 190201
SVRTSA
OKC113-143-147-190245-
/O.NEW.KTSA.SV.W.0202.190619T0201Z-190619T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
901 PM CDT Tue Jun 18 2019

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southeastern Osage County in northeastern Oklahoma...
  Southwestern Washington County in northeastern Oklahoma...
  North central Tulsa County in northeastern Oklahoma...

* Until 945 PM CDT.

* At 901 PM CDT, a severe thunderstorm was located 6 miles south of
  Barnsdall, moving southeast at 25 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations in or near the path include...
  Skiatook...                       Barnsdall...
  Avant...                          Wolco...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 3646 9633 3660 9612 3640 9582 3621 9618
TIME...MOT...LOC 0201Z 312DEG 22KT 3647 9619 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

1 follow-up statement

998 
WWUS54 KTSA 190215
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
915 PM CDT Tue Jun 18 2019

OKC113-143-147-190245-
/O.CON.KTSA.SV.W.0202.000000T0000Z-190619T0245Z/
Osage OK-Washington OK-Tulsa OK-
915 PM CDT Tue Jun 18 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR SOUTHEASTERN OSAGE...SOUTHWESTERN WASHINGTON AND NORTH CENTRAL
TULSA COUNTIES...

At 915 PM CDT, a severe thunderstorm was located 4 miles south of
Avant, moving southeast at 25 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations in or near the path include...
Skiatook...                       Avant...
Wolco...                          

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3645 9621 3660 9612 3640 9582 3621 9618
TIME...MOT...LOC 0215Z 309DEG 23KT 3642 9610 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

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 Jun 18, 6:10 PM CDT, 2 hours 51 minutes earlier.

Area forecast discussion, Jun 18, 6:10 PM CDT, 2 hours 51 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
610 PM CDT Tue Jun 18 2019

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
VFR TAF elements to prevail into the overnight hours
across most sites. Thunderstorms will begin to impact the
NE OK sites after 06z and the remainder of the E OK/NW AR sites
after 09z-10z. IFR vsbys and MVFR cigs can be expected in
thunderstorms. Activity will shift east of the NW AR sites between
12z-15z, with MVFR cigs to lift into VFR categories from west to
east in the 16z-18z time frame.

&&

.PREV DISCUSSION... /Issued 308 PM CDT Tue Jun 18 2019/

DISCUSSION...
Thunderstorm chances and the attendant severe weather threat are
the main focus for the short term forecast. For this afternoon and
evening, a compact upper level low continues to move across
central KS with a sfc boundary north of the OK/KS border and a
subtle low level convergence area west of I-35 into central OK.
Storm development will remain possible in this area during the
afternoon with at least limited potential for discrete supercells
to move into parts of northeast OK through the evening, especially
closer to the border, with very large hail possible and low
tornado potential as well. Any such storms will also be slow
moving under relatively weak flow regime and thus could result in
localized flash flooding.

Later this evening storms developing over the high plains are
likely to grow into one or more clusters that will move into
eastern OK late evening and overnight and eventually northwest AR.
At this time the highest probabilities should remain north of
I-40, and these storms will mainly pose a damaging straight-line
wind threat. While heavy rainfall will remain possible, flash
flooding potential could be mitigated some by the more
progressive nature. Thunderstorms and severe weather chances
Wednesday will be contingent on what happens tonight, but current
thinking is the overnight complex will drive the effective frontal
boundary into at least southeast OK. This would be where the
majority of additional storm development would be expected.

Should see relatively dry weather later in the week with
temperatures climbing into the 90s, before thunderstorm and heavy
rain potential increase by the weekend as a well-defined
shortwave trough and frontal boundary arrive.

&&

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

AVIATION.....23

Hazardous weather outlook, Jun 18, 4:56 PM CDT, 4 hours 5 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
456 PM CDT Tue Jun 18 2019

ARZ001-002-010-011-019-020-029-OKZ049-053>076-191000-
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-
456 PM CDT Tue Jun 18 2019

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

.DAY ONE...This Evening and Tonight.

TORNADO.
	RISK...Limited.
	AREA...Portions of northeast Oklahoma mainly northwest of
           I-44.
	ONSET...Ongoing.

SEVERE THUNDERSTORM.
	RISK...Elevated.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...Ongoing...although best chances will be late evening
    and overnight.

FLASH FLOOD.
	RISK...Limited.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...This evening and overnight.

HEAVY RAIN.
	RISK...Limited.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...This evening and overnight.

DISCUSSION...

Isolated thunderstorms have developed across portions of north
central Oklahoma late this afternoon. These storms may eventually
drift into portions of northeast Oklahoma mainly northwest of
Interstate 44. These storms will have the potential to be severe
with strong gusty winds and large hail the main concern. Any
discrete cells will pose a limited risk of tornadoes through the
evening hours, mainly near the Oklahoma...Kansas state line. In
addition, very heavy rainfall will be likely in the stronger
thunderstorms and with the slow storm motions expected, localized
flash flooding will be possible.

Thunderstorms across Kansas and other storms well to our west
should eventually develop into multiple clusters of storms and
move into eastern Oklahoma mainly after midnight.  These storms are
expected to sweep east into northwest Arkansas late tonight. Strong
damaging winds and heavy rainfall will be the main concern, with the
greatest threat for severe weather across northeast Oklahoma.

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

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
WEDNESDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
THURSDAY...No Hazards.
FRIDAY...Thunderstorm Potential...High Wind Potential...Dangerous
Heat Potential.
SATURDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
SUNDAY...Thunderstorm Potential...Heavy Rain Potential.
MONDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...

Thunderstorms could still be ongoing across portions of far eastern
Oklahoma and western Arkansas Wednesday morning. Additional
thunderstorms will develop Wednesday afternoon and continue into
Wednesday night in the vicinity of a cold front across southeast
Oklahoma and into northwest Arkansas. These storms will have the
potential to be strong to severe with strong gusty winds, large hail
and heavy rainfall possible.

The next significant chance of showers and thunderstorms will
come over the weekend and into early next week as a slow moving
storm system affects the region. Some of these storms could
be severe. Heavy rainfall will also be possible.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Jun 18, 7:14 PM CDT, 1 hour 47 minutes before

Special Weather Statement
National Weather Service Tulsa OK
714 PM CDT Tue Jun 18 2019

OKZ054-190100-
Osage OK-
714 PM CDT Tue Jun 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL OSAGE COUNTY UNTIL
800 PM CDT...

At 713 PM CDT, a strong thunderstorm was located 4 miles east of Kaw
Lake, moving east 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...
Shidler...                        Burbank...
Grainola...                       Foraker...
Pearsonia...                      Eastern Kaw Lake...
Webb City...                      Apperson...

LAT...LON 3666 9637 3670 9682 3675 9683 3676 9682
      3677 9682 3677 9679 3678 9679 3678 9675
      3691 9675 3699 9644
TIME...MOT...LOC 0013Z 261DEG 20KT 3679 9677

Local storm report, Jun 18, 7:40 PM CDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
740 PM CDT TUE JUN 18 2019

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

0738 PM     HAIL             SHIDLER                 36.78N 96.66W
06/18/2019  E0.88 INCH       OSAGE              OK   EMERGENCY MNGR

&&

BLH

Local storm report, Jun 18, 7:45 PM CDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
745 PM CDT TUE JUN 18 2019

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

0742 PM     HAIL             SHIDLER                 36.78N 96.66W
06/18/2019  E1.75 INCH       OSAGE              OK   EMERGENCY MNGR

            GOLF BALL HAIL ON THE NORTH SIDE OF SHIDLER.

&&

BLH

Special weather statement, Jun 18, 8:15 PM CDT, 46 minutes before

Special Weather Statement
National Weather Service Tulsa OK
815 PM CDT Tue Jun 18 2019

OKZ054>056-190145-
Osage OK-Nowata OK-Washington OK-
815 PM CDT Tue Jun 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN OSAGE...NORTHERN
WASHINGTON AND NORTHWESTERN NOWATA COUNTIES UNTIL 845 PM CDT...

At 815 PM CDT, a strong thunderstorm was located 4 miles northwest of
Hulah, moving southeast at 25 mph.

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

Locations in or near the path include...
Bartlesville...                   Dewey...
Copan...                          Wann...
Hulah...                          Wah Sha She State Park...

LAT...LON 3700 9571 3673 9587 3690 9628 3700 9622
TIME...MOT...LOC 0115Z 304DEG 22KT 3698 9608

Special weather statement, Jun 18, 8:34 PM CDT, 27 minutes before

Special Weather Statement
National Weather Service Tulsa OK
834 PM CDT Tue Jun 18 2019

OKZ055>057-190200-
Craig OK-Nowata OK-Washington OK-
834 PM CDT Tue Jun 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CRAIG...NORTHEASTERN
WASHINGTON AND NOWATA COUNTIES UNTIL 900 PM CDT...

At 834 PM CDT, a strong thunderstorm was located 3 miles southwest of
South Coffeyville, moving east at 35 mph.

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

Locations in or near the path include...
South Coffeyville...              Delaware...
Lenapah...                        Wann...

LAT...LON 3672 9539 3679 9588 3700 9583 3700 9535
TIME...MOT...LOC 0134Z 280DEG 31KT 3696 9567

Local storm report, Jun 18, 8:50 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
850 PM CDT TUE JUN 18 2019

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

0837 PM     HAIL             3 N WYNONA              36.59N 96.33W
06/18/2019  E1.75 INCH       OSAGE              OK   BROADCAST MEDIA

&&

BLH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:14 PM CDT	Special Weather Statement	TSA	Osage	46 min
Jun 18, 7:26 PM CDT	Severe Thunderstorm Warning	TSA	Osage	49 min
Jun 18, 8:10 PM CDT	Severe Thunderstorm Warning	TSA	Osage	50 min
Jun 18, 8:15 PM CDT	Special Weather Statement	TSA	Washington	30 min
Jun 18, 8:23 PM CDT	Tornado Warning	TSA	Osage	40 min
Jun 18, 8:34 PM CDT	Special Weather Statement	TSA	Nowata	26 min
Jun 18, 9:19 PM CDT	Special Weather Statement	TSA	Ottawa	26 min
Jun 18, 9:31 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Washington	44 min
Jun 18, 9:47 PM CDT	Special Weather Statement	TSA	Ottawa	28 min
Jun 18, 10:06 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	39 min
Jun 18, 10:12 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	48 min
Jun 18, 10:41 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	49 min
Jun 18, 10:46 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	44 min
Jun 18, 11:11 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Rogers, Wagoner	49 min
Jun 18, 11:58 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee, Wagoner	47 min
Jun 19, 2:48 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Haskell, Latimer, McIntosh, Muskogee, Pittsburg and 1 more	57 min
Jun 19, 2:56 AM CDT	Special Weather Statement	TSA	McIntosh, Okmulgee	34 min
Jun 19, 3:19 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee	56 min
Jun 19, 3:33 AM CDT	Areal Flood Advisory	TSA	Craig, Nowata, Ottawa	117 min
Jun 19, 3:45 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Haskell, Latimer, LeFlore, Pittsburg, Pushmataha	60 min
Jun 19, 3:53 AM CDT	Special Weather Statement	TSA	Mayes, Wagoner	52 min
Jun 19, 4:09 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Sequoyah	51 min
Jun 19, 4:28 AM CDT	Special Weather Statement	TSA	Delaware	47 min
Jun 19, 5:01 AM CDT	Special Weather Statement	TSA	Adair	44 min
Jun 19, 8:48 AM CDT	River Flood Warning	TSA	Nowata	31 hr
Jun 19, 5:55 PM CDT	Special Weather Statement	TSA	Choctaw	35 min
Jun 19, 6:01 PM CDT	Special Weather Statement	TSA	Choctaw	29 min
Jun 19, 6:34 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	41 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.