Flash Flood and Hail in Oklahoma, July 3 to 4, 2017

Name: Flash Flood and Hail in Oklahoma, July 3 to 4, 2017
Start: 2017-07-03T15:54
End: 2017-07-04T01:01
Location: Oklahoma

July 3 to 4, 2017 · NWS OUN · 41 events in 20 counties and zones

An area of storms formed during the evening of the 3rd in the vicinity of a warm front across northern Oklahoma, before traversing the state southeastward.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $27,000
Crop damage: None recorded
Events: 41

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS OUN wrote it up.

An area of storms formed during the evening of the 3rd in the vicinity of a warm front across northern Oklahoma, before traversing the state southeastward.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jul 3, 2:02 PM CST, 1 hour 52 minutes earlier.

Area forecast discussion, Jul 3, 2:02 PM CST, 1 hour 52 minutes before

Area Forecast Discussion
National Weather Service Norman OK
302 PM CDT Mon Jul 3 2017

.DISCUSSION...
As discussed with the update earlier, there is a strong signal for
a convective complex developing this afternoon northwest, and
sweeping southeast through the area this afternoon through early
Tuesday morning. And with this is the high probability of damaging
winds and heavy rainfall, and will explicitly mention these
possibilities in the zones tonight. With this evolution now
expected, this shifts the focus for storms tomorrow more to the
south closer to any remnant surface boundary, although a lot will
depend on what specifically happens overnight.

The base of the upper trough across the Midwest is progged to
continue to poke into Oklahoma Wednesday which could help support
scattered thunderstorms. Upper ridge strengthens in the Rockies
and the High Plains later this week which will reduce
precipitation chances Thursday and Friday, but then we will start
again with precipitation chances of late storms moving off the
central High Plains into northeastern sections of the area.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  70  89  70  88 /  70  30  40  30
Hobart OK         70  92  71  91 /  70  20  40  30
Wichita Falls TX  74  92  73  91 /  60  30  40  30
Gage OK           65  91  67  92 /  70  20  20  20
Ponca City OK     69  84  68  88 /  70  30  30  20
Durant OK         73  88  72  88 /  60  40  40  40

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

Hazardous weather outlook, Jul 3, 3:01 PM CST, 53 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
401 PM CDT Mon Jul 3 2017

OKZ004>048-050>052-TXZ083>090-042115-
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-
401 PM CDT Mon Jul 3 2017

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

.DAY ONE...Through Tonight...

.Thunderstorms...
There is a Enhanced Risk of severe thunderstorms this afternoon
and tonight across parts of central and western Oklahoma and a
small part of western north Texas.

.Location...
The Enhanced risk encompasses an area from from Freedom and
Cherokee, to Guthrie, to Norman, to Duncan, Electra and Quanah
Texas, to Hollis, Arnett and Fort Supply. A Slight risk surrounds
the Enhanced risk and includes areas north of a line from Calvin,
to Marietta Oklahoma to Henrietta, Seymour and Benjamin Texas. A
Marginal risk includes the remainder of southern Oklahoma and
western north Texas.

.Timing...
Through 1 am.

.Impacts...
Winds up to 80 mph.
Hail up to the size of Tennis balls. Flooding rain.

.Discussion...
Scattered thunderstorms will be possible this afternoon across
many parts of Oklahoma and western north Texas. A few of these
storms may approach severe levels with small hail and gusty
winds, as well as brief heavy rain.

Otherwise, a more organized area of showers and thunderstorms is
expected to develop across southwest Kansas into far northwest
Oklahoma. This complex of storms is then expected to move east and
southeast during the late afternoon and evening hours, impacting
much of Oklahoma and western north Texas. Damaging straight line
winds will be the main threat, with large hail and heavy rainfall
also possible, especially across the enhanced and slight risk
areas.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across the
risk areas should prepare for severe weather operations this
afternoon and evening.

.Heavy rain...
Torrential rain will be likely with many of the storms through
tonight. Flooding may occur in areas with poor drainage, or where
heavy rain fell on Sunday or Sunday night.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

.Thunderstorms...
There will be a chance of thunderstorms each day except Friday.
Severe storms will be possible over northern and central Oklahoma
Tuesday and Wednesday.

.Heavy rain...
Flooding will be possible again Tuesday and Wednesday 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, 2:33 PM CST, 1 hour 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
333 PM CDT MON JUL 3 2017

OKZ004-032100-
Harper OK-
333 PM CDT MON JUL 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR northern Harper County Until 400
PM CDT...

AT 332 PM CDT, a strong thunderstorm was located 6 miles southeast of
Englewood, moving east at 25 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts over 50 MPH...
Minor flooding in areas of poor drainage...
Frequent cloud to ground lightning...

Locations impacted include...
Buffalo and Selman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Storm intensity is increasing and severe weather may develop rapidly.
Stay alert and listen for warnings.

&&

LAT...LON 3700 9945 3697 9943 3672 9942 3684 10001
      3700 10000
TIME...MOT...LOC 2032Z 267DEG 22KT 3697 9990

03

Special weather statement, Jul 3, 3:43 PM CST, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
443 PM CDT MON JUL 3 2017

OKZ004-009-032230-
Harper OK-Ellis OK-
443 PM CDT MON JUL 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR southwestern Harper and
northwestern Ellis Counties Until 530 PM CDT...

AT 441 PM CDT, a strong thunderstorm was located 6 miles east of
Follett, moving east at 20 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...
Frequent cloud to ground lightning...

Locations impacted include...
Laverne, Gage, Fargo, May and Catesby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Storm intensity is increasing and severe weather may develop rapidly.
Stay alert and listen for warnings.

&&

LAT...LON 3678 10000 3666 9980 3666 9961 3634 9961
      3627 10000
TIME...MOT...LOC 2141Z 251DEG 17KT 3646 10003

03

The radar

The Vance AFB radar (KVNX), 130 km away, was scanning. The volume nearest the first event began at 21:51 UTC.

Open the radar archive at this moment

Event by event

37 thunderstorm wind, 3 hail, 1 flash flood. Local standard time, as filed.

Thunderstorm Wind, Woodward

When: July 3, 3:54 PM CST
Where: Woodward County, 0.69 mi N of Fort Supply
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 36.580, -99.570

No damage reported.

Thunderstorm Wind, Woodward

When: July 3, 4:00 PM CST
Where: Woodward County, Fort Supply
Measured: 52 kt (60 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 36.570, -99.570

Large tree limbs downed.

Hail, Harper

When: July 3, 4:14 PM CST
Where: Harper County, 0.69 mi N of Selman
Measured: 1 in hail
Reported by: Public
Coordinates: 36.810, -99.490

Thunderstorm Wind, Woodward

When: July 3, 4:19 PM CST
Where: Woodward County, 1.38 mi S of Fort Supply
Measured: 61 kt (70 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 36.550, -99.570

No damage reported.

Thunderstorm Wind, Woodward

When: July 3, 4:20 PM CST
Where: Woodward County, 5.2 mi NE of Woodward Arpt
Measured: 61 kt (70 mph) estimated gust
Reported by: COOP Observer
Coordinates: 36.490, -99.450

No damage reported.

Thunderstorm Wind, Ellis

When: July 3, 4:25 PM CST
Where: Ellis County, Gage
Measured: 58 kt (67 mph) measured gust
Reported by: ASOS
Coordinates: 36.320, -99.760

Thunderstorm Wind, Woodward

When: July 3, 4:35 PM CST
Where: Woodward County, Woodward
Measured: 61 kt (70 mph) estimated gust
Reported by: Social Media
Coordinates: 36.430, -99.390

Media report over Twitter. No damage reported.

Thunderstorm Wind, Woodward

When: July 3, 4:45 PM CST
Where: Woodward County, 1.81 mi WSW of Woodward
Measured: 58 kt (67 mph) measured gust
Reported by: Mesonet
Coordinates: 36.420, -99.420

Thunderstorm Wind, Woodward

When: July 3, 4:45 PM CST
Where: Woodward County, 17.59 mi N of Mooreland Arpt
Measured: 70 kt (81 mph) measured gust
Reported by: Mesonet
Coordinates: 36.730, -99.130

Thunderstorm Wind, Major

When: July 3, 5:00 PM CST
Where: Major County, 1.49 mi NNE of Bouse Junction
Measured: 61 kt (70 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 36.440, -98.880

No damage reported.

Hail, Woods

When: July 3, 5:05 PM CST
Where: Woods County, 7.8 mi E of Waynoka
Measured: 1 in hail
Reported by: COOP Observer
Coordinates: 36.580, -98.740

Thunderstorm Wind, Dewey

When: July 3, 5:09 PM CST
Where: Dewey County, 2.23 mi W of Cestos
Measured: 61 kt (70 mph) estimated gust
Reported by: Storm Chaser
Coordinates: 36.140, -99.130

No damage reported.

Thunderstorm Wind, Dewey

When: July 3, 5:45 PM CST
Where: Dewey County, 2.76 mi N of Putnam
Measured: 51 kt (59 mph) measured gust
Reported by: Mesonet
Coordinates: 35.900, -98.970

Thunderstorm Wind, Custer

When: July 3, 6:40 PM CST
Where: Custer County, 4.17 mi WSW of Weatherford
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 35.510, -98.770

Thunderstorm Wind, Custer

When: July 3, 6:40 PM CST
Where: Custer County, 1 mi WSW of Clinton
Measured: 56 kt (64 mph) estimated gust
Property damage: $2,000
Reported by: Emergency Manager
Coordinates: 35.504, -98.986

Structural damage near high school. Time estimated by radar and other reports.

Thunderstorm Wind, Alfalfa

When: July 3, 6:44 PM CST
Where: Alfalfa County, 0.89 mi NW of Cherokee
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 36.760, -98.360

Small tree were branches downed.

Thunderstorm Wind, Garfield

When: July 3, 6:50 PM CST
Where: Garfield County, 1.49 mi SSE of Drummond
Measured: 56 kt (64 mph) estimated gust
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 36.280, -98.030

Many utility poles were downed.

Thunderstorm Wind, Custer

When: July 3, 6:55 PM CST
Where: Custer County, 2.18 mi NE of Weatherford
Measured: 51 kt (59 mph) measured gust
Reported by: AWOS
Coordinates: 35.550, -98.670

Thunderstorm Wind, Washita

When: July 3, 7:05 PM CST
Where: Washita County, 3.96 mi WNW of Bessie
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 35.410, -99.050

Thunderstorm Wind, Caddo

When: July 3, 7:10 PM CST
Where: Caddo County, 6.23 mi W of Hinton
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 35.460, -98.470

Thunderstorm Wind, Garfield

When: July 3, 7:12 PM CST
Where: Garfield County, 0.69 mi N of Enid
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 36.410, -97.880

No damage reported.

Thunderstorm Wind, Grant

When: July 3, 7:25 PM CST
Where: Grant County, 1.3 mi WSW of Medford
Measured: 63 kt (72 mph) measured gust
Reported by: Mesonet
Coordinates: 36.800, -97.750

Thunderstorm Wind, Logan

When: July 3, 7:35 PM CST
Where: Logan County, 3.55 mi NE of Lovell
Measured: 52 kt (60 mph) measured gust
Reported by: Mesonet
Coordinates: 36.100, -97.600

Thunderstorm Wind, Custer

When: July 3, 7:45 PM CST
Where: Custer County, 4.83 mi SW of Butler
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 35.590, -99.250

Thunderstorm Wind, Beckham

When: July 3, 7:50 PM CST
Where: Beckham County, 4.15 mi S of Elk City
Measured: 52 kt (60 mph) measured gust
Reported by: Mesonet
Coordinates: 35.350, -99.420

Hail, Logan

When: July 3, 7:56 PM CST
Where: Logan County, 5.04 mi E of Cimarron City
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 35.890, -97.510

Thunderstorm Wind, Noble

When: July 3, 8:00 PM CST
Where: Noble County, 2.8 mi WSW of Ceres
Measured: 56 kt (64 mph) measured gust
Reported by: Emergency Manager
Coordinates: 36.462, -97.326

Measured by I-35.

Thunderstorm Wind, Oklahoma

When: July 3, 8:05 PM CST
Where: Oklahoma County, 1.82 mi WSW of Edmond
Measured: 59 kt (68 mph) measured gust
Reported by: Public
Coordinates: 35.640, -97.510

Thunderstorm Wind, Noble

When: July 3, 8:10 PM CST
Where: Noble County, 3.5 mi N of Sumner
Measured: 51 kt (59 mph) measured gust
Reported by: Mesonet
Coordinates: 36.370, -97.130

Thunderstorm Wind, Oklahoma

When: July 3, 8:16 PM CST
Where: Oklahoma County, 1.32 mi WNW of Spencer
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 35.520, -97.400

No damage reported.

Thunderstorm Wind, Oklahoma

When: July 3, 8:30 PM CST
Where: Oklahoma County, 0.69 mi N of (Tik)tinker Afb
Measured: 50 kt (58 mph) measured gust
Reported by: AWOS
Coordinates: 35.420, -97.390

Thunderstorm Wind, Oklahoma

When: July 3, 8:30 PM CST
Where: Oklahoma County, 1.69 mi E of Nichols Hills
Measured: 61 kt (70 mph) estimated gust
Property damage: $15,000
Reported by: Emergency Manager
Coordinates: 35.550, -97.510

Structural damage sustained by a business, and power lines/poles downed nearby.

Thunderstorm Wind, Comanche

When: July 3, 8:40 PM CST
Where: Comanche County, 1.33 mi WNW of Mt Scott
Measured: 58 kt (67 mph) measured gust
Reported by: Mesonet
Coordinates: 34.750, -98.550

Thunderstorm Wind, Tillman

When: July 3, 8:50 PM CST
Where: Tillman County, 0.57 mi W of Frederick Arpt
Measured: 54 kt (62 mph) measured gust
Reported by: ASOS
Coordinates: 34.350, -98.990

Thunderstorm Wind, Comanche

When: July 3, 8:59 PM CST
Where: Comanche County, 3.25 mi SSW of Lawton
Measured: 55 kt (63 mph) measured gust
Reported by: ASOS
Coordinates: 34.570, -98.420

Thunderstorm Wind, Comanche

When: July 3, 9:02 PM CST
Where: Comanche County, 3.68 mi ESE of Lawton
Measured: 54 kt (62 mph) measured gust
Reported by: Amateur Radio
Coordinates: 34.590, -98.330

Thunderstorm Wind, Comanche

When: July 3, 9:11 PM CST
Where: Comanche County, 0.89 mi NE of Elgin
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 34.790, -98.280

No damage reported.

Thunderstorm Wind, Comanche

When: July 3, 9:15 PM CST
Where: Comanche County, 5.75 mi SE of Lawton
Measured: 59 kt (68 mph) measured gust
Reported by: Amateur Radio
Coordinates: 34.550, -98.320

Thunderstorm Wind, Jackson

When: July 3, 9:15 PM CST
Where: Jackson County, 3.52 mi SE of Martha
Measured: 50 kt (58 mph) measured gust
Reported by: AWOS
Coordinates: 34.700, -99.340

Thunderstorm Wind, Pottawatomie

When: July 3, 9:18 PM CST
Where: Pottawatomie County, 1.13 mi E of Tecumseh
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 35.260, -96.920

No damage reported.

Flash Flood, Logan

When: July 3, 10:01 PM CST to July 4, 1:01 AM CST
Where: Logan County, 1.83 mi NNW of Meridian to 2.06 mi NNW of Meridian
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 35.865, -97.259

Road was closed due to high water.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Oklahoma in 2017 Every state in 2017 This day in weather history Warnings in Oklahoma, July 2017

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 713871, 713872, 713873, 713874, 713875, 713876, 713878, 713879, 713880, 713881, 713882, 713883, 713884, 713885, 716690, 713886, 713887, 713888, 713889, 713890, 713891, 713892, 713893, 713894, 713895, 713896, 713897, 713898, 713900, 713901, 713902, 713903, 713904, 713905, 713906, 713907, 713909, 713910, 713911, 713912, and more.