Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 154, NWS Tulsa, OK

September 30, 2021Creek County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Sep 30, 2021, 12:56 PM CDT for Creek County, Tulsa County, Oklahoma. It was in force for 34 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: Sep 30, 2021, 12:56 PM CDT (17:56 UTC)
Expired: Sep 30, 2021, 1:30 PM CDT
In force: 34 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Creek County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 48 km from the middle of the area, began a volume at 18:00 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, 5.9 hours before the alert went out and 154 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: 961 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 945 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

311 
WUUS54 KTSA 301756
SVRTSA
OKC037-143-301830-
/O.NEW.KTSA.SV.W.0154.210930T1756Z-210930T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1256 PM CDT Thu Sep 30 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northeastern Creek County in northeastern Oklahoma...
  Central Tulsa County in northeastern Oklahoma...

* Until 130 PM CDT.

* At 1255 PM CDT, a severe thunderstorm was located 5 miles south of
  Mannford, moving east at 20 mph.

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

  SOURCE...Radar indicated.

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

* Locations in or near the path include...
  Tulsa...                          Sand Springs...
  Bixby...                          Sapulpa...
  Jenks...                          Glenpool...
  Mannford...                       Kiefer...
  Kellyville...                     Keystone State Park...
  Jenks Riverside Airport...        Gray...

This includes Interstate 44 between mile markers 200 and 226.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3616 9600 3619 9600 3619 9590 3592 9589
      3593 9642 3616 9643
TIME...MOT...LOC 1755Z 268DEG 19KT 3605 9632 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$
Snider

2 follow-up statements

779 
WWUS54 KTSA 301811
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
111 PM CDT Thu Sep 30 2021

OKC037-143-301830-
/O.CON.KTSA.SV.W.0154.000000T0000Z-210930T1830Z/
Creek OK-Tulsa OK-
111 PM CDT Thu Sep 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR NORTHEASTERN CREEK AND CENTRAL TULSA COUNTIES...

At 111 PM CDT, a severe thunderstorm was located 6 miles southeast of
Keystone State Park, moving east at 20 mph.

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

SOURCE...Radar indicated.

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

Locations in or near the path include...
Tulsa...                          Sand Springs...
Bixby...                          Sapulpa...
Jenks...                          Glenpool...
Mannford...                       Kiefer...
Kellyville...                     Keystone State Park...
Jenks Riverside Airport...        Gray...

This includes Interstate 44 between mile markers 200 and 226.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3616 9600 3619 9600 3619 9590 3592 9589
      3593 9636 3616 9636
TIME...MOT...LOC 1811Z 268DEG 19KT 3605 9622 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

281 
WWUS54 KTSA 301813
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
113 PM CDT Thu Sep 30 2021

OKC037-143-301830-
/O.CON.KTSA.SV.W.0154.000000T0000Z-210930T1830Z/
Creek OK-Tulsa OK-
113 PM CDT Thu Sep 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR NORTHEASTERN CREEK AND CENTRAL TULSA COUNTIES...

At 113 PM CDT, a severe thunderstorm was located 6 miles northwest of
Sapulpa, moving east at 20 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations in or near the path include...
Tulsa...                          Sand Springs...
Bixby...                          Sapulpa...
Jenks...                          Glenpool...
Mannford...                       Kiefer...
Kellyville...                     Keystone State Park...
Jenks Riverside Airport...        Gray...

This includes Interstate 44 between mile markers 200 and 226.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3616 9600 3619 9600 3619 9590 3592 9589
      3593 9636 3616 9636
TIME...MOT...LOC 1813Z 268DEG 19KT 3605 9620 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$
Snider

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 30, 12:45 PM CDT	Special Weather Statement	TSA	Creek	30 min
Sep 30, 1:28 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	23 min
Sep 30, 1:54 PM CDT	Special Weather Statement	TSA	Tulsa	36 min
Sep 30, 1:59 PM CDT	Special Weather Statement	TSA	Tulsa	16 min
Sep 30, 2:14 PM CDT	Special Weather Statement	TSA	Rogers	31 min
Sep 30, 2:40 PM CDT	Special Weather Statement	TSA	Mayes	35 min
Sep 30, 3:22 PM CDT	Special Weather Statement	TSA	Cherokee	23 min
Sep 30, 5:16 PM CDT	Special Weather Statement	TSA	Choctaw	44 min
Sep 30, 5:19 PM CDT	Special Weather Statement	TSA	Delaware	26 min
Sep 30, 5:58 PM CDT	Special Weather Statement	TSA	Choctaw	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning in 2021

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.