Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 617, NWS Norman, OK

July 3, 2017Bryan County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 3, 2017, 4:26 AM CDT for Bryan 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 counties it named.

The facts

Issued: Jul 3, 2017, 4:26 AM CDT (09:26 UTC)
Expired: Jul 3, 2017, 5:00 AM CDT
In force: 34 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Bryan County, OK

The radar

The Norman radar (KTLX), 179 km from the middle of the area, began a volume at 09:25 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

Fort Worth, TX (KFWD), launched 00:00Z, 9.4 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: 1618 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1837 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.4

Open this sounding in Storm Lab

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 3:36 AM CDT, 50 minutes earlier.

Area forecast discussion, Jul 3, 3:36 AM CDT, 50 minutes before

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Hazardous weather outlook, Jul 2, 10:12 PM CDT, 6 hours 14 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1012 PM CDT Sun Jul 2 2017

OKZ004>048-050>052-TXZ083>090-040315-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1012 PM CDT Sun Jul 2 2017

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...rest of Tonight...

.Thunderstorms...
Strong to severe storms will remain possible across portions of
south central and southeast Oklahoma through midnight. Hail up to
the size of ping pong balls and wind gusts to 70 mph will be
possible.

Early Monday morning, additional showers and storms could move
into parts of northern and western Oklahoma from Kansas. A few of
these storms may be strong to marginally severe with hail up to
the size of quarters and wind gusts to 60 mph.

Heavy rain leading to flash flooding will remain a concern through
early Monday morning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

.Thunderstorms...
Scattered thunderstorms are possible at times Monday though
Thursday. Strong to marginally severe storms will be possible
again on Monday and Tuesday, mainly across northern and central
Oklahoma.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Special weather statement, Jul 3, 1:35 AM CDT, 2 hours 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
135 AM CDT MON JUL 3 2017

OKZ042-043-047-030700-
Coal OK-Pontotoc OK-Johnston OK-
135 AM CDT MON JUL 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR west central Coal...southeastern
Pontotoc and north central Johnston Counties Until 200 AM CDT...

AT 133 AM CDT, a strong thunderstorm was located 5 miles south of
Ada, moving southeast at 20 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Minor flooding in areas of poor drainage...

Locations impacted include...
Ada, Stonewall, Tupelo, Centrahoma, Fittstown and Jesse.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Severe weather is not expected and no warnings are anticipated at
this time.

&&

LAT...LON 3467 9673 3477 9669 3461 9632 3442 9653
TIME...MOT...LOC 0633Z 305DEG 18KT 3470 9665

MBS

Special weather statement, Jul 3, 1:43 AM CDT, 2 hours 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
143 AM CDT MON JUL 3 2017

OKZ041>043-046>048-050>052-030730-
Love OK-Coal OK-Atoka OK-Carter OK-Pontotoc OK-Johnston OK-
Marshall OK-Murray OK-Bryan OK-
143 AM CDT MON JUL 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Love...southwestern
Coal...southwestern Atoka...southeastern Carter...southeastern
Pontotoc...Johnston...Marshall...southern Murray and Bryan Counties
Until 230 AM CDT...

AT 141 AM CDT, strong thunderstorms were along a line extending from
4 miles north of Fittstown to near Mead, moving east at 10 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 40 MPH...
Minor flooding in areas of poor drainage...

Locations impacted include...
Ardmore, Ada, Durant, Madill, Tishomingo, Kingston, Dickson, Colbert,
Caddo, Mannsville, Bokchito, Ravia, Achille, Stonewall, Wapanucka,
Silo, Tupelo, Milburn, Caney and Kenefic.

This includes Interstate 35 between mile markers 25 and 28.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Severe weather is not expected and no warnings are anticipated at
this time.

&&

LAT...LON 3384 9615 3376 9618 3377 9629 3369 9635
      3378 9643 3384 9662 3390 9659 3392 9667
      3383 9671 3387 9681 3385 9686 3396 9692
      3394 9697 3409 9718 3434 9701 3435 9669
      3474 9669 3477 9653 3460 9632 3387 9600
TIME...MOT...LOC 0641Z 262DEG 9KT 3469 9663 3400 9649

MBS

Special weather statement, Jul 3, 2:31 AM CDT, 1 hour 55 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
231 AM CDT MON JUL 3 2017

OKZ042-043-047-048-052-030815-
Coal OK-Atoka OK-Pontotoc OK-Johnston OK-Bryan OK-
231 AM CDT MON JUL 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR southern Coal...southwestern
Atoka...southeastern Pontotoc...eastern Johnston and Bryan Counties
Until 315 AM CDT...

AT 229 AM CDT, strong thunderstorms were along a line extending from
near Stonewall to near Utica, moving southeast at 15 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 40 MPH...
Minor flooding in areas of poor drainage...
Frequent cloud to ground lightning...

Locations impacted include...
Durant, Atoka, Coalgate, Colbert, Caddo, Bokchito, Achille,
Stonewall, Wapanucka, Lehigh, Bennington, Silo, Tupelo, Tushka,
Caney, Kenefic, Bromide, Kemp, Mead and Armstrong.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Severe weather is not expected and no warnings are anticipated at
this time.

&&

LAT...LON 3385 9598 3387 9600 3384 9602 3386 9603
      3384 9604 3384 9615 3381 9618 3381 9616
      3376 9618 3377 9629 3370 9632 3369 9635
      3378 9643 3378 9648 3383 9655 3415 9656
      3422 9648 3470 9660 3457 9621 3387 9594
TIME...MOT...LOC 0729Z 302DEG 14KT 3462 9655 3387 9623

MBS

Special weather statement, Jul 3, 3:14 AM CDT, 1 hour 12 minutes before

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Special weather statement, Jul 3, 4:12 AM CDT, 14 minutes before

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Special weather statement, Jul 3, 4:17 AM CDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 7:10 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston	65 min
Jul 2, 7:12 PM CDT	Special Weather Statement	OUN	Pottawatomie	63 min
Jul 2, 7:18 PM CDT	Special Weather Statement	OUN	Carter, Jefferson	57 min
Jul 2, 7:23 PM CDT	Severe Thunderstorm Warning	OUN	Carter	37 min
Jul 2, 7:25 PM CDT	Special Weather Statement	OUN	Garvin	50 min
Jul 2, 7:27 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Johnston, Murray, Pontotoc	48 min
Jul 2, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	48 min
Jul 2, 8:03 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Johnston, Murray, Pontotoc	57 min
Jul 2, 8:09 PM CDT	Special Weather Statement	OUN	Atoka	36 min
Jul 2, 8:27 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	63 min
Jul 2, 8:32 PM CDT	Special Weather Statement	OUN	Murray	43 min
Jul 2, 8:48 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	42 min
Jul 2, 8:58 PM CDT	Areal Flood Advisory	OUN	Atoka	3 hr
Jul 2, 9:06 PM CDT	Severe Thunderstorm Warning	OUN	Love, Marshall	39 min
Jul 2, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	45 min
Jul 2, 9:40 PM CDT	Special Weather Statement	OUN	Murray	50 min
Jul 2, 9:46 PM CDT	Special Weather Statement	OUN	Bryan	44 min
Jul 2, 9:48 PM CDT	Special Weather Statement	OUN	Carter	57 min
Jul 2, 9:56 PM CDT	Areal Flood Advisory	OUN	Carter, Love, Marshall	3 hr
Jul 2, 10:03 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	57 min
Jul 2, 10:21 PM CDT	Areal Flood Advisory	OUN	Bryan, Marshall	3 hr
Jul 2, 10:23 PM CDT	Special Weather Statement	OUN	Marshall	37 min
Jul 2, 10:34 PM CDT	Special Weather Statement	OUN	Murray	26 min
Jul 2, 10:44 PM CDT	Special Weather Statement	OUN	Love	31 min
Jul 2, 10:57 PM CDT	Severe Thunderstorm Warning	OUN	Love	18 min
Jul 2, 11:27 PM CDT	Special Weather Statement	OUN	Marshall, Murray	33 min
Jul 2, 11:59 PM CDT	Special Weather Statement	OUN	Murray	31 min
Jul 3, 12:05 AM CDT	Special Weather Statement	OUN	Marshall	25 min
Jul 3, 12:11 AM CDT	Areal Flood Warning	OUN	Coal, Murray, Pontotoc	9 hr
Jul 3, 12:36 AM CDT	Special Weather Statement	OUN	Johnston	24 min
Jul 3, 12:58 AM CDT	Special Weather Statement	OUN	Bryan, Johnston, Marshall	47 min
Jul 3, 1:35 AM CDT	Special Weather Statement	OUN	Pontotoc	25 min
Jul 3, 1:43 AM CDT	Special Weather Statement	OUN	Bryan, Johnston, Marshall	47 min
Jul 3, 2:22 AM CDT	Areal Flood Advisory	OUN	Bryan, Johnston	3 hr
Jul 3, 2:31 AM CDT	Special Weather Statement	OUN	Bryan, Coal	44 min
Jul 3, 2:35 AM CDT	Flash Flood Warning	OUN	Bryan	6 hr
Jul 3, 3:14 AM CDT	Special Weather Statement	OUN	Atoka, Bryan, Coal	61 min
Jul 3, 4:12 AM CDT	Special Weather Statement	OUN	Atoka, Bryan, Coal, Pontotoc	48 min
Jul 3, 4:56 AM CDT	Areal Flood Advisory	OUN	Atoka, Bryan	3 hr
Jul 3, 4:58 AM CDT	Special Weather Statement	OUN	Atoka, Bryan, Coal	62 min
Jul 3, 6:00 AM CDT	Special Weather Statement	OUN	Bryan, Johnston	45 min
Jul 3, 6:47 AM CDT	Special Weather Statement	OUN	Bryan	43 min
Jul 3, 7:13 AM CDT	Special Weather Statement	OUN	Garfield	47 min
Jul 3, 7:55 AM CDT	Special Weather Statement	OUN	Atoka	35 min
Jul 3, 9:25 AM CDT	River Flood Warning	OUN	Bryan	26 hr
Jul 3, 9:26 AM CDT	River Flood Warning	OUN	Atoka	5 days
Jul 3, 3:33 PM CDT	Special Weather Statement	OUN	Harper	27 min
Jul 3, 3:37 PM CDT	Severe Thunderstorm Warning	OUN	Harper	53 min
Jul 3, 4:02 PM CDT	Areal Flood Advisory	OUN	Harper	3 hr
Jul 3, 4:23 PM CDT	Severe Thunderstorm Warning	OUN	Harper	67 min
Jul 3, 4:43 PM CDT	Special Weather Statement	OUN	Harper	47 min
Jul 3, 4:52 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woodward	68 min
Jul 3, 4:58 PM CDT	Special Weather Statement	OUN	Woods	32 min
Jul 3, 5:16 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	44 min
Jul 3, 5:26 PM CDT	Special Weather Statement	OUN	Cotton	49 min
Jul 3, 5:31 PM CDT	Special Weather Statement	OUN	Woods	29 min
Jul 3, 5:38 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods	67 min
Jul 3, 5:41 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	49 min
Jul 3, 5:52 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	38 min
Jul 3, 5:57 PM CDT	Tornado Warning	OUN	Woods, Woodward	14 min
Jul 3, 6:08 PM CDT	Special Weather Statement	OUN	Alfalfa	37 min
Jul 3, 6:12 PM CDT	Areal Flood Advisory	OUN	Ellis, Harper, Woods, Woodward	3 hr
Jul 3, 6:17 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Dewey, Major, Woods, Woodward	73 min
Jul 3, 6:21 PM CDT	Special Weather Statement	OUN	Roger Mills	24 min
Jul 3, 6:29 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	61 min
Jul 3, 6:50 PM CDT	Special Weather Statement	OUN	Blaine, Custer	40 min
Jul 3, 6:53 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	67 min
Jul 3, 4:17 AM CDT	Special Weather Statement	OUN	Foard, Hardeman, Knox	43 min

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.