Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 3, NWS Tulsa, OK

January 10, 2020Rogers County, Tulsa County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jan 10, 2020, 11:35 AM CST for Rogers County, Tulsa County, Washington County, Oklahoma. It was in force for 25 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: Jan 10, 2020, 11:35 AM CST (17:35 UTC)
Expired: Jan 10, 2020, 12:00 PM CST
In force: 25 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Rogers County, OK, Tulsa County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 28 km from the middle of the area, began a volume at 17:37 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
Jan 10, 11:38 AM CST	HAIL 0.75	2 N Tulsa, OK

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

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 10, 7:44 AM CST	Severe Thunderstorm Watch	SPC	67 days
Jan 10, 10:42 AM CST	Tornado Watch	SPC	10 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 5.6 hours before the alert went out and 177 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: 927 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 595 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

As transmitted.

472 
WUUS54 KTSA 101735
SVRTSA
OKC131-143-147-101800-
/O.NEW.KTSA.SV.W.0003.200110T1735Z-200110T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1135 AM CST Fri Jan 10 2020

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northwestern Rogers County in northeastern Oklahoma...
  Southwestern Washington County in northeastern Oklahoma...
  Northeastern Tulsa County in northeastern Oklahoma...

* Until noon CST.

* At 1135 AM CST, a severe thunderstorm was located over Tulsa,
  moving north at 65 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations in or near the path include...
  Tulsa...                          Broken Arrow...
  Owasso...                         Bixby...
  Jenks...                          Skiatook...
  Catoosa...                        Collinsville...
  Sperry...                         Oologah...
  Vera...                           Jenks Riverside Airport...
  Turley...                         Tulsa International Airport...

This includes Interstate 44 between mile markers 217 and 236.
 
A Tornado Watch remains in effect until 600 PM CST for northeastern
Oklahoma.

LAT...LON 3647 9557 3616 9575 3616 9576 3614 9576
      3600 9584 3605 9603 3607 9603 3608 9605
      3616 9603 3617 9600 3633 9600 3651 9597
TIME...MOT...LOC 1735Z 198DEG 58KT 3612 9592 

HAIL...1.00IN
WIND...60MPH
 
$$

2 follow-up statements

787 
WWUS54 KTSA 101747
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1147 AM CST Fri Jan 10 2020

OKC131-143-147-101800-
/O.CON.KTSA.SV.W.0003.000000T0000Z-200110T1800Z/
Rogers OK-Washington OK-Tulsa OK-
1147 AM CST Fri Jan 10 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CST FOR
NORTHWESTERN ROGERS...SOUTHWESTERN WASHINGTON AND NORTHEASTERN TULSA
COUNTIES...

At 1147 AM CST, a severe thunderstorm was located near Owasso, moving
north at 65 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations in or near the path include...
Tulsa...                          Owasso...
Skiatook...                       Catoosa...
Collinsville...                   Sperry...
Oologah...                        Vera...
Turley...                         

A Tornado Watch remains in effect until 600 PM CST for northeastern
Oklahoma.

LAT...LON 3647 9557 3624 9572 3622 9575 3620 9577
      3622 9585 3622 9595 3623 9598 3626 9600
      3633 9600 3651 9597
TIME...MOT...LOC 1747Z 198DEG 58KT 3631 9584 

HAIL...1.00IN
WIND...60MPH
 
$$

120 
WWUS54 KTSA 101754
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1154 AM CST Fri Jan 10 2020

OKC131-143-147-101804-
/O.EXP.KTSA.SV.W.0003.000000T0000Z-200110T1800Z/
Rogers OK-Washington OK-Tulsa OK-
1154 AM CST Fri Jan 10 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ROGERS...
SOUTHWESTERN WASHINGTON AND NORTHEASTERN TULSA COUNTIES WILL EXPIRE
AT NOON CST...
                
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 small hail
and gusty winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 600 PM CST for northeastern
Oklahoma.

LAT...LON 3647 9557 3624 9572 3622 9575 3620 9577
      3622 9585 3622 9595 3623 9598 3626 9600
      3633 9600 3651 9597
TIME...MOT...LOC 1754Z 198DEG 58KT 3640 9580 

$$

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 Jan 10, 10:59 AM CST, 36 minutes earlier.

Area forecast discussion, Jan 10, 10:59 AM CST, 36 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
1059 AM CST Fri Jan 10 2020

.DISCUSSION...
Showers and thunderstorms are increasing in coverage and intensity
across eastern Oklahoma late this morning. This trend will
continue into the afternoon, with severe storms and possible
tornadoes expected. Have made a few minor changes to afternoon
high temperatures, with the rest of the forecast looking good at
this time.

Update on the way.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch through late tonight for OKZ049-053-057-058-
     060>063-065>076.

     Winter Storm Watch from late tonight through Saturday morning
     for OKZ054-055-059.

AR...Flash Flood Watch through late tonight for ARZ001-002-010-011-
     019-020-029.

&&

SHORT TERM...05
LONG TERM....20

PLATE

Hazardous weather outlook, Jan 10, 5:12 AM CST, 6 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
512 AM CST Fri Jan 10 2020

ARZ001-002-010-011-019-020-029-OKZ049-053>076-111115-
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-
512 AM CST Fri Jan 10 2020

...Severe Storms and Winter Weather Expected Through Tonight...

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

.DAY ONE...Today and Tonight.

TORNADO.
	RISK...Elevated.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...This Afternoon.

SEVERE THUNDERSTORM.
	RISK...Significant.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...This Afternoon.

	AREA AT GREATEST RISK...Southeast Oklahoma.

FLASH FLOOD.
	RISK...Elevated.
    Area...Much of eastern Oklahoma and western Arkansas.
    Onset...This Afternoon.

HEAVY RAIN.
	RISK...Significant.
    Area...Much of eastern Oklahoma and western Arkansas.
    Onset...This Afternoon.

WINTER WEATHER.
	SNOW ACCUMULATION.
	RISK...Limited.
	AREA...Northeast Oklahoma .
	ONSET...Late Evening.

	Additional Accumulations in Later Periods.

	ICE ACCUMULATION.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...Late Evening.

SIGNIFICANT WINDS.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...This Evening.

DISCUSSION...
An active weather day is on tap for eastern Oklahoma and
western Arkansas as a strong cold front is poised to move
through region this afternoon and evening. Thunderstorms
are expected to become widespread across the region by
this afternoon with a line of thunderstorms eventually
forming near the cold front and moving through the region
late this afternoon and evening. Severe weather is expected
with the thunderstorms with the potential for 70 mph wind
gusts, a few tornadoes, and large hail to the size of quarters.
The severe weather threat is expected to end around midnight.
Heavy rainfall is also anticipated across the region Today and
into this evening with most of eastern Oklahoma and western
Arkansas seeing 1 to 3 inches of rain. Some locations could
see upwards of 6 inches of rain through this evening which
could lead to flash flooding. The river flood threat will
also be on the increase Today.

As cold air spills into the region behind the cold front,
a transition to wintry precipitation will take place with
freezing rain, sleet and snow all possible late tonight
across northeast Oklahoma. This could lead to slick spots
on area roadways.

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

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
SATURDAY...Winter Weather Potential...High Wind Potential.
SUNDAY through TUESDAY...No Hazards.
WEDNESDAY...Thunderstorm Potential.
THURSDAY...No Hazards.

EXTENDED DISCUSSION...
The wintry precipitation will continue into Saturday across
much of eastern Oklahoma and western Arkansas as cold air
continues to invade the region and an upper level disturbance
moves across the region. Snowfall forecasts currently call
for 1 to 4 inches of snow north and west of Interstate 44
across northeast Oklahoma with 1 to 2 inches of snow across
northwest Arkansas and the remainder of northeast Oklahoma.
Lighter snow amounts will be possible across southeast Oklahoma
into west-central Arkansas. There will also be a light accumulation
of ice across the area as well. This will likely lead to hazardous
driving conditions across the region. The wintry precipitation
is expected to end late Saturday afternoon.

Temperatures on Sunday will be warm enough that any wintry travel
impacts will be relatively short lived.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Continue to monitor the latest forecasts of severe weather, heavy
rain, flash flooding and winter weather. Consider readying plans to
respond to impacts from severe thunderstorms, flooding, and wintry
weather.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Jan 10, 10:58 AM CST, 37 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1058 AM CST Fri Jan 10 2020

OKZ054-059-101745-
Osage OK-Pawnee OK-
1058 AM CST Fri Jan 10 2020

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL OSAGE AND EASTERN PAWNEE
COUNTIES UNTIL 1145 AM CST...

At 1058 AM CST, strong thunderstorms were located along a line
extending from near Maramec to near Hallett to near Cleveland.
Movement was north at 55 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations in or near the path include...
Pawhuska...                       Hominy...
Cleveland...                      Fairfax...
Shidler...                        Wynona...
Osage...                          Hallett...
Blackburn...                      Maramec...
Skedee...                         Pearsonia...
Osage Hills State Park...         Okesa...
Webb City...                      Pershing...
Nelagoney...

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.

A Tornado Watch remains in effect until 600 PM CST for northeastern
Oklahoma.

LAT...LON 3685 9672 3676 9610 3625 9643 3619 9660
      3622 9672
TIME...MOT...LOC 1658Z 202DEG 46KT 3624 9664 3624 9658 3630 9649

Special weather statement, Jan 10, 11:15 AM CST, 20 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1115 AM CST Fri Jan 10 2020

OKZ054-101745-
Osage OK-
1115 AM CST Fri Jan 10 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL OSAGE COUNTY UNTIL
1145 AM CST...

At 1115 AM CST, a strong thunderstorm was located 6 miles southwest
of Pearsonia, moving northeast at 55 mph.

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

Locations in or near the path include...
Elgin...                          Foraker...
Pearsonia...

A Tornado Watch remains in effect until 600 PM CST for northeastern
Oklahoma.

LAT...LON 3700 9617 3665 9648 3670 9664 3700 9657
TIME...MOT...LOC 1715Z 205DEG 48KT 3673 9652

Special weather statement, Jan 10, 11:32 AM CST, 3 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1132 AM CST Fri Jan 10 2020

OKZ060-061-101800-
Tulsa OK-Rogers OK-
1132 AM CST Fri Jan 10 2020

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL ROGERS AND EASTERN
TULSA COUNTIES UNTIL NOON CST...

At 1132 AM CST, a strong thunderstorm was located 3 miles northeast
of Jenks Riverside Airport, moving north at 60 mph.

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

Locations in or near the path include...
Tulsa...                          Broken Arrow...
Owasso...                         Bixby...
Jenks...                          Skiatook...
Catoosa...                        Collinsville...
Sperry...                         Turley...
Tulsa International Airport...    Jenks Riverside Airport...

This includes Interstate 44 between mile markers 217 and 235.

A Tornado Watch remains in effect until 600 PM CST for northeastern
Oklahoma.

LAT...LON 3635 9566 3617 9576 3615 9576 3596 9586
      3601 9603 3607 9603 3608 9606 3616 9604
      3617 9600 3630 9600 3640 9598
TIME...MOT...LOC 1732Z 198DEG 59KT 3607 9594

Local storm report, Jan 10, 11:35 AM CST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1135 AM CST FRI JAN 10 2020

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

1133 AM     HAIL             TULSA                   36.13N 95.92W
01/10/2020  E1.00 INCH       TULSA              OK   EMERGENCY MNGR

            REPORTED AROUND THE 6500 BLOCK OF SOUTH LEWIS

&&

JDS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 10, 10:42 AM CST	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	25 min
Jan 10, 10:58 AM CST	Special Weather Statement	TSA	Osage, Pawnee	47 min
Jan 10, 11:15 AM CST	Special Weather Statement	TSA	Osage	30 min
Jan 10, 11:27 AM CST	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes, Muskogee, Wagoner	48 min
Jan 10, 11:32 AM CST	Special Weather Statement	TSA	Tulsa	28 min
Jan 10, 11:34 AM CST	Tornado Warning	TSA	Cherokee, Delaware, Mayes, Wagoner	41 min
Jan 10, 11:39 AM CST	Special Weather Statement	TSA	Ottawa	36 min
Jan 10, 11:46 AM CST	Special Weather Statement	TSA	Okmulgee	44 min
Jan 10, 11:54 AM CST	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	51 min
Jan 10, 12:09 PM CST	Special Weather Statement	TSA	Nowata, Washington	51 min
Jan 10, 12:38 PM CST	Special Weather Statement	TSA	Muskogee, Wagoner	37 min
Jan 10, 12:43 PM CST	Special Weather Statement	TSA	McIntosh, Pittsburg	47 min
Jan 10, 12:54 PM CST	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Muskogee, Wagoner	51 min
Jan 10, 1:03 PM CST	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	42 min
Jan 10, 1:04 PM CST	Tornado Warning	TSA	Cherokee, Muskogee, Wagoner	41 min
Jan 10, 1:11 PM CST	Tornado Warning	TSA	McIntosh, Pittsburg	36 min
Jan 10, 1:14 PM CST	Severe Thunderstorm Warning	TSA	Craig, Nowata	27 min
Jan 10, 1:22 PM CST	Tornado Warning	TSA	Craig, Nowata	16 min
Jan 10, 1:31 PM CST	Tornado Warning	TSA	Cherokee, Delaware, Mayes	44 min
Jan 10, 1:37 PM CST	Tornado Warning	TSA	McIntosh, Muskogee, Pittsburg	38 min
Jan 10, 1:59 PM CST	Special Weather Statement	TSA	Pittsburg	46 min
Jan 10, 2:06 PM CST	Tornado Warning	TSA	McIntosh, Muskogee	39 min
Jan 10, 2:09 PM CST	Tornado Warning	TSA	Delaware	9 min
Jan 10, 2:29 PM CST	Severe Thunderstorm Warning	TSA	Latimer, McIntosh, Pittsburg	46 min
Jan 10, 2:34 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	41 min
Jan 10, 2:36 PM CST	Tornado Warning	TSA	Adair, Cherokee, Muskogee	39 min
Jan 10, 2:51 PM CST	Tornado Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg	39 min
Jan 10, 3:05 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	40 min
Jan 10, 3:12 PM CST	Tornado Warning	TSA	Adair, Cherokee, Delaware	28 min
Jan 10, 3:13 PM CST	Areal Flood Advisory	TSA	Cherokee, Haskell, Latimer, McIntosh, Muskogee, Pittsburg and 1 more	3 hr
Jan 10, 3:21 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 1 more	39 min
Jan 10, 3:40 PM CST	Tornado Warning	TSA	Haskell, LeFlore, Sequoyah	34 min
Jan 10, 3:49 PM CST	Severe Thunderstorm Warning	TSA	Adair	41 min
Jan 10, 3:50 PM CST	Areal Flood Advisory	TSA	Adair, Cherokee, Delaware, Sequoyah	3 hr
Jan 10, 3:55 PM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, LeFlore, Sequoyah	50 min
Jan 10, 3:58 PM CST	Areal Flood Advisory	TSA	McIntosh, Pittsburg	3 hr
Jan 10, 4:02 PM CST	Winter Weather Advisory	TSA	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more	23 hr
Jan 10, 4:24 PM CST	Severe Thunderstorm Warning	TSA	Adair, Sequoyah	51 min
Jan 10, 4:34 PM CST	Winter Storm Watch	TSA	Pawnee, Washington	4 hr
Jan 10, 4:53 PM CST	Flash Flood Warning	TSA	Cherokee, Haskell, Latimer, McIntosh, Muskogee, Pittsburg and 1 more	6 hr
Jan 10, 5:16 PM CST	Special Weather Statement	TSA	Pittsburg	44 min
Jan 10, 5:47 PM CST	Special Weather Statement	TSA	Haskell, Latimer	43 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020 Every severe thunderstorm warning in 2020

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.