Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 203, NWS Tulsa, OK

May 3, 2017Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 3, 2017, 12:57 AM CDT for Osage County, Oklahoma. It was in force for 48 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: May 3, 2017, 12:57 AM CDT (05:57 UTC)
Expired: May 3, 2017, 1:45 AM CDT
In force: 48 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Osage County, OK

The radar

The Tulsa radar (KINX), 105 km from the middle of the area, began a volume at 05:58 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.

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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 6.0 hours before the alert went out and 168 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: 684 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 1621 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

As transmitted.

892 
WUUS54 KTSA 030557
SVRTSA
OKC113-030645-
/O.NEW.KTSA.SV.W.0203.170503T0557Z-170503T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1257 AM CDT WED MAY 3 2017

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Central Osage County in northeastern Oklahoma...

* Until 145 AM CDT

* At 1257 AM CDT, a severe thunderstorm was located 3 miles east of
  Fairfax, moving northeast 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...
  Pawhuska...                       Fairfax...
  Wynona...                         Pershing...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3681 9638 3656 9626 3647 9671 3648 9670
      3651 9673 3652 9672 3655 9674 3655 9675
      3661 9677
TIME...MOT...LOC 0557Z 247DEG 22KT 3658 9664 

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

2 follow-up statements

849 
WWUS54 KTSA 030611
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
111 AM CDT WED MAY 3 2017

OKC113-030645-
/O.CON.KTSA.SV.W.0203.000000T0000Z-170503T0645Z/
Osage OK-
111 AM CDT WED MAY 3 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR CENTRAL OSAGE COUNTY...

At 111 AM CDT, a severe thunderstorm was located 9 miles east of
Fairfax, moving northeast at 25 mph.

HAZARD...60 mph wind gusts and half dollar 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...
Pawhuska...                       Fairfax...
Wynona...                         Pershing...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3681 9638 3656 9626 3647 9671 3648 9670
      3651 9673 3652 9672 3655 9674 3655 9675
      3661 9677
TIME...MOT...LOC 0611Z 247DEG 22KT 3661 9654 

HAIL...1.25IN
WIND...60MPH
 
$$

756 
WWUS54 KTSA 030624
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
124 AM CDT WED MAY 3 2017

OKC113-030645-
/O.CON.KTSA.SV.W.0203.000000T0000Z-170503T0645Z/
Osage OK-
124 AM CDT WED MAY 3 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR CENTRAL OSAGE COUNTY...

At 123 AM CDT, a severe thunderstorm was located 4 miles west of
Pawhuska, moving east at 30 mph.

HAZARD...60 mph wind gusts and half dollar 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...
Pawhuska...                       Wynona...
Pershing...                       

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3681 9638 3656 9626 3651 9655 3670 9660
TIME...MOT...LOC 0623Z 247DEG 27KT 3665 9642 

HAIL...1.25IN
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 May 2, 11:55 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, May 2, 11:55 PM CDT, 1 hour 2 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
1155 PM CDT Tue May 2 2017

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Numerous showers and thunderstorms will affect the northeast
Oklahoma sites overnight, spreading into the northwest Arkansas
and southeast Oklahoma sites Wednesday morning. A cold front will
sweep across the area Wednesday, with gusty north winds and MVFR
ceilings following in its wake.

&&

.PREV DISCUSSION... /Issued 930 PM CDT Tue May 2 2017/

..UPDATE...

DISCUSSION...
Convection continues to increase west of Interstate 35 and will be
spreading into NE OK very soon. Latest data support current
forecast with widespread precip across NE OK with the heaviest
amounts nearer the KS/OK border and points northward.
Updated forecast will adjust for observed trends otherwise
looks to be tracking well.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch through Thursday morning for OKZ054>063-
     067>069.

AR...Flash Flood Watch through Thursday morning for ARZ001-002-010-
     011.

&&

AVIATION...05

Hazardous weather outlook, May 2, 4:52 PM CDT, 8 hours 5 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
452 PM CDT Tue May 2 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-031030-
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-
452 PM CDT Tue May 2 2017

...HEAVY RAIN AND FLASH FLOODING CONCERNS OVERNIGHT THROUGH WEDNESDAY...

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

.DAY ONE...This afternoon and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Northeast Oklahoma and far northwest Arkansas.
	ONSET...After 10pm.

HEAVY RAIN AND FLASH FLOOD.
	RISK...Elevated.
	AREA...Northeast Oklahoma and northwest Arkansas.
	ONSET...After 10pm.

DISCUSSION...
Scattered thunderstorms will develop over the western
High Plains this evening and spread eastward overnight.
Repeated rounds of heavy rain are likely with locations
near the Oklahoma Kansas border and points northward
being the most likely for the heaviest rains.
A few storms may produce large hail with a locally
damaging wind gust also possible especially along and
north of a Tulsa to Fayetteville line.
Thunderstorms will continue to develop through the
day on Wednesday as a cold front moves through the
region.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
WEDNESDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
THURSDAY through MONDAY...No Hazards.

EXTENDED DISCUSSION...
The threat of locally heavy rainfall will shift into southeast
Oklahoma and western Arkansas with during the day on
Wednesday. Additionally, a few severe storms will
again be possible, primarily Wednesday afternoon, across
southeast Oklahoma. Large hail and locally damaging winds
will again be the main severe weather threat Wednesday afternoon.
After this system moves out of the region, an extended period of
dry and mild weather will prevail from late week through
the upcoming weekend.

weather.gov/tulsa Contains additional information.

In the hours before

Special weather statement, May 3, 12:01 AM CDT, 56 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1201 AM CDT WED MAY 3 2017

OKZ054-059-030530-
Osage OK-Pawnee OK-
1201 AM CDT WED MAY 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL OSAGE AND
NORTHWESTERN PAWNEE COUNTIES UNTIL 1230 AM CDT...

At 1200 AM CDT, a strong thunderstorm was located 5 miles east of Red
Rock, moving east at 45 mph.

Dime size hail will be possible with this storm.

Locations in or near the path include...
Fairfax...                        Ralston...

LAT...LON 3651 9703 3651 9701 3652 9701 3653 9698
      3653 9696 3655 9692 3655 9690 3657 9689
      3658 9689 3660 9691 3668 9666 3643 9656
      3634 9703
TIME...MOT...LOC 0500Z 252DEG 37KT 3644 9709

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 12:01 AM CDT	Special Weather Statement	TSA	Pawnee	29 min
May 3, 12:29 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	31 min
May 3, 1:32 AM CDT	Severe Thunderstorm Warning	TSA	Osage	28 min
May 3, 1:33 AM CDT	Special Weather Statement	TSA	Craig	27 min
May 3, 1:57 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	33 min
May 3, 1:59 AM CDT	Special Weather Statement	TSA	Osage	31 min
May 3, 2:03 AM CDT	Special Weather Statement	TSA	Rogers	27 min
May 3, 2:19 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers, Washington	26 min
May 3, 2:45 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers	45 min
May 3, 2:49 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	41 min
May 3, 3:01 AM CDT	Flash Flood Warning	TSA	Osage, Pawnee, Washington	6 hr
May 3, 3:25 AM CDT	Special Weather Statement	TSA	Ottawa	35 min
May 3, 3:30 AM CDT	Severe Thunderstorm Warning	TSA	Osage	30 min
May 3, 3:59 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Washington	46 min
May 3, 4:06 AM CDT	Special Weather Statement	TSA	Tulsa	39 min
May 3, 4:09 AM CDT	Flash Flood Warning	TSA	Craig, Nowata, Ottawa	5 hr
May 3, 4:18 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Rogers, Tulsa, Washington	42 min
May 3, 4:32 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers, Tulsa, Washington	43 min
May 3, 4:45 AM CDT	Special Weather Statement	TSA	Craig, Nowata	45 min
May 3, 5:11 AM CDT	Special Weather Statement	TSA	Delaware, Mayes	34 min
May 3, 5:29 AM CDT	Areal Flood Advisory	TSA	Craig, Mayes, Rogers, Tulsa	3 hr
May 3, 5:38 AM CDT	Special Weather Statement	TSA	Delaware	37 min
May 3, 6:30 AM CDT	Special Weather Statement	TSA	Adair	30 min
May 3, 7:13 AM CDT	Special Weather Statement	TSA	Pittsburg	47 min
May 3, 7:42 AM CDT	Special Weather Statement	TSA	McCurtain	48 min
May 3, 7:55 AM CDT	Special Weather Statement	TSA	Haskell, Latimer, Pittsburg	65 min
May 3, 8:06 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	39 min
May 3, 8:25 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	35 min
May 3, 8:27 AM CDT	Special Weather Statement	TSA	Sequoyah	33 min
May 3, 8:31 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	29 min
May 3, 8:33 AM CDT	River Flood Advisory	TSA	Cherokee	4 days
May 3, 8:52 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	23 min
May 3, 8:57 AM CDT	Areal Flood Warning	TSA	Osage, Pawnee, Washington	6 hr
May 3, 9:00 AM CDT	Special Weather Statement	TSA	Pushmataha	60 min
May 3, 9:02 AM CDT	River Flood Warning	TSA	Washington	52 hr
May 3, 9:02 AM CDT	River Flood Warning	TSA	Rogers, Tulsa	3 days
May 3, 9:09 AM CDT	Areal Flood Warning	TSA	Craig, Nowata, Ottawa	6 hr
May 3, 10:00 AM CDT	River Flood Warning	TSA	Osage	17 hr
May 3, 10:00 AM CDT	River Flood Warning	TSA	Osage, Tulsa	34 hr
May 3, 11:04 AM CDT	River Flood Warning	TSA	Washington	15 hr
May 3, 12:30 PM CDT	Special Weather Statement	TSA	Choctaw	45 min
May 3, 1:01 PM CDT	Special Weather Statement	TSA	Choctaw	29 min
May 3, 1:39 PM CDT	River Flood Warning	TSA	Tulsa	42 hr
May 3, 4:11 PM CDT	River Flood Warning	TSA	Okmulgee	3 days

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning in 2017

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.