Alert archive / Oklahoma / Tornado Warnings in 2020

Tornado Warning 21, NWS Tulsa, OK

April 28, 2020Osage County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Apr 28, 2020, 6:01 PM CDT for Osage County, Tulsa County, Oklahoma. It was in force for 29 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: Apr 28, 2020, 6:01 PM CDT (23:01 UTC)
Expired: Apr 28, 2020, 6:30 PM CDT
In force: 29 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Osage County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 53 km from the middle of the area, began a volume at 23:03 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
Apr 28, 6:16 PM CDT	TSTM WND GST 60	3 Ene Sand Springs, OK	NEAR 4300 WEST EDISON

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 28, 3:18 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.0 hours before the alert went out and 158 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: 1292 J/kg
Mixed-layer CIN: -331 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 213 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.0

Open this sounding in Storm Lab

The text

As transmitted.

685 
WFUS54 KTSA 282301
TORTSA
OKC113-143-282330-
/O.NEW.KTSA.TO.W.0021.200428T2301Z-200428T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
601 PM CDT Tue Apr 28 2020

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Southeastern Osage County in northeastern Oklahoma...
  Central Tulsa County in northeastern Oklahoma...

* Until 630 PM CDT.
    
* At 601 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 6 miles east of Walnut Creek State Park, moving
  southeast at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations in or near the path include...
  Tulsa...                          Sand Springs...
  Turley...                         Gray...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3636 9612 3620 9590 3607 9607 3607 9610
      3619 9625 3621 9624 3623 9626 3623 9627
TIME...MOT...LOC 2301Z 321DEG 43KT 3625 9616 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

1 follow-up statement

982 
WWUS54 KTSA 282310
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
610 PM CDT Tue Apr 28 2020

OKC113-143-282330-
/O.CON.KTSA.TO.W.0021.000000T0000Z-200428T2330Z/
Osage OK-Tulsa OK-
610 PM CDT Tue Apr 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
SOUTHEASTERN OSAGE AND CENTRAL TULSA COUNTIES...
    
At 610 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Sand Springs, moving southeast at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations in or near the path include...
Tulsa...                          Sand Springs...
Gray...                           

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3628 9608 3620 9590 3607 9607 3607 9610
      3617 9623 3619 9621 3621 9617 3625 9614
TIME...MOT...LOC 2310Z 326DEG 38KT 3617 9610 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 2:10 PM CDT	River Flood Warning	TSA	LeFlore	18 hr
Apr 28, 2:27 PM CDT	River Flood Advisory	TSA	Cherokee	18 hr
Apr 28, 3:56 PM CDT	Special Weather Statement	TSA	Osage	19 min
Apr 28, 4:07 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	53 min
Apr 28, 4:31 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	59 min
Apr 28, 4:39 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	51 min
Apr 28, 4:54 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Washington	66 min
Apr 28, 4:57 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	63 min
Apr 28, 5:04 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	41 min
Apr 28, 5:07 PM CDT	Tornado Warning	TSA	Nowata	38 min
Apr 28, 5:19 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Ottawa, Rogers, Washington	56 min
Apr 28, 5:23 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	52 min
Apr 28, 5:36 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Rogers, Tulsa, Washington	39 min
Apr 28, 5:44 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa, Rogers	61 min
Apr 28, 5:45 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	30 min
Apr 28, 5:51 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	39 min
Apr 28, 5:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers, Tulsa, Washington	52 min
Apr 28, 6:02 PM CDT	Tornado Warning	TSA	Mayes, Rogers	28 min
Apr 28, 6:10 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Rogers, Tulsa, Washington	50 min
Apr 28, 6:15 PM CDT	Special Weather Statement	TSA	Okmulgee	30 min
Apr 28, 6:16 PM CDT	Tornado Warning	TSA	Creek, Tulsa	29 min
Apr 28, 6:18 PM CDT	Tornado Warning	TSA	Delaware, Mayes, Rogers	42 min
Apr 28, 6:23 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Mayes, Okmulgee, Rogers, Tulsa, Wagoner	52 min
Apr 28, 6:31 PM CDT	Tornado Warning	TSA	Mayes	29 min
Apr 28, 6:33 PM CDT	Areal Flood Advisory	TSA	Creek, Mayes, Osage, Rogers, Tulsa, Wagoner	117 min
Apr 28, 6:37 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Craig, Delaware, Mayes, Ottawa, Rogers and 1 more	53 min
Apr 28, 6:42 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Creek, Mayes, Muskogee, Okfuskee, Okmulgee and 3 more	63 min
Apr 28, 6:56 PM CDT	Flash Flood Warning	TSA	Tulsa	3 hr

Nearby

Tornado Warnings in Oklahoma, 2020 Every tornado warning in 2020 Tornadoes 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.