Hail, Jackson
- When
- April 13, 3:45 PM CST
- Where
- Jackson County, (Lts)altus Afb
- Measured
- 0.75 in hail
- Reported by
- Other Federal Agency
- Coordinates
- 34.660, -99.290
Altus Air Force Base report.
Hail in Oklahoma, April 13, 2021
Elevated convection developed during the late afternoon and evening well north of a cold front. A few storms produced marginally severe hail.
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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 3
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.
Elevated convection developed during the late afternoon and evening well north of a cold front. A few storms produced marginally severe hail.
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 Apr 13, 2:11 PM CST, 1 hour 34 minutes earlier.
Area forecast discussion, Apr 13, 2:11 PM CST, 1 hour 34 minutes before
Area Forecast Discussion National Weather Service Norman OK 311 PM CDT Tue Apr 13 2021 ...New LONG TERM... .SHORT TERM... (This evening through Wednesday) Issued at 109 PM CDT Tue Apr 13 2021 Showers and storms will slowly move in from the southwest, spreading into central Oklahoma this evening into tonight, driven largely by isentropic ascent. Fairly weak instability may support a few rumbles of thunder. Tomorrow morning this round of precipitation will move out, followed by another wave of precipitation coming in from the west Wednesday afternoon associated with another small disturbance in the upper flow. Cool temperatures and mostly overcast skies will persist as northeasterly surface flow continues. Day && .LONG TERM... (Wednesday night through next Monday) Issued at 311 PM CDT Tue Apr 13 2021 A quasi-zonal pattern will become a little more active into the long term, with a more pronounced trough crossing the region Friday. One wave of light precip should be exiting Wednesday night, followed by a break, and then a more consolidated area of precipitation will develop within warm/moist advection and isentropic ascent Thursday night lasting through Friday. The majority of precipitation should fall early Friday and then decrease later in the day, ending overnight. Below normal temperatures will occur in the wake of this system until winds become more southwesterly and downslope early next week. BRB && .AVIATION... (18Z TAFS) Issued at 1213 PM CDT Tue Apr 13 2021 MVFR ceilings and rain showers with some embedded thunderstorms will move in slowly from the southwest up into central Oklahoma. KCSM, KPNC, and KSWO will be near the edge of this precipitation swath. By morning most of this activity should start moving out. Northeast winds will diminish this evening. Day && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 67 46 62 46 / 20 80 30 10 Hobart OK 67 44 61 46 / 30 70 40 10 Wichita Falls TX 69 49 63 49 / 40 80 40 20 Gage OK 62 39 59 41 / 0 10 30 10 Ponca City OK 65 44 64 43 / 10 20 10 10 Durant OK 72 52 65 51 / 20 70 20 40 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && SHORT TERM...14 LONG TERM....12 AVIATION...14
Hazardous weather outlook, Apr 13, 12:48 PM CST, 2 hours 57 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 148 PM CDT Tue Apr 13 2021 OKZ004>048-050>052-TXZ083>090-141900- 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- 148 PM CDT Tue Apr 13 2021 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...This Afternoon and Tonight... .Thunderstorms... More widespread thunderstorm chances return mainly to western north Texas and the southern half of Oklahoma this evening into early Wednesday morning. A few strong storms with hail up to the size of nickels are possible with this activity, but severe weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... .Thunderstorms... Isolated to widely scattered thunderstorms will be possible Wednesday afternoon mainly along and west of Interstate 35 and south of Intestate 40. Occasional rain and thunderstorm chances will continue Thursday and especially Friday. Severe thunderstorm chances appear to be low during these times. 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, Apr 13, 2:57 PM CST, 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 357 PM CDT Tue Apr 13 2021 OKZ036-TXZ083-085-132130- Jackson OK-Wilbarger TX-Hardeman TX- 357 PM CDT Tue Apr 13 2021 ...SIGNIFICANT WEATHER ADVISORY FOR south central Jackson... northwestern Wilbarger and east central Hardeman Counties Until 430 PM CDT... AT 356 PM CDT, a strong thunderstorm was located 5 miles north of Chillicothe, moving northeast at 25 MPH. HAZARDS INCLUDE... Hail up to the size of nickels... Wind gusts to 50 MPH... LAT...LON 3421 9956 3437 9968 3458 9943 3434 9920 TIME...MOT...LOC 2056Z 239DEG 23KT 3433 9954 ..speg.
The radar
The Altus AFB radar (KFDR), 44 km away, was scanning. The volume nearest the first event began at 21:46 UTC.
Event by event
3 hail. Local standard time, as filed.
Hail, Tillman
- When
- April 13, 4:33 PM CST
- Where
- Tillman County, 0.69 mi N of Tipton
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 34.510, -99.140
Hail, Caddo
- When
- April 13, 4:57 PM CST
- Where
- Caddo County, 0.89 mi NE of Ft Cobb Res Dam
- Measured
- 0.88 in hail
- Reported by
- Trained Spotter
- Coordinates
- 35.170, -98.440
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Marine Thunderstorm Winds in Gulf of Mexico, April 13, 2021
- Flash Flooding and Hail in Louisiana, April 13, 2021
- Hail in Texas, April 13 to 14, 2021
- High Wind in California, April 13 to 14, 2021
- High Wind in Utah, April 13 to 14, 2021
- Drought in North Dakota, April 13 to 30, 2021
- Winter Storm and Heavy Snow in Wyoming, April 13 to 16, 2021
- Flash Flood and Hail in Louisiana, April 13 to 16, 2021
- Dust Storm in Washington, April 13, 2021
- High Wind and Winter Weather in California, April 13 to 14, 2021
- Winter Weather in Nevada, April 13 to 14, 2021
- Hail in Texas, April 13, 2021
More
Every storm in Oklahoma in 2021Every state in 2021This day in weather historyWarnings in Oklahoma, April 2021
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: 954920, 954921, 954922.