The combination of a weak upper trough, a surface trough over the central Oklahoma Panhandle, and a marginally unstable environment allowed convection to develop during the evening hours of the 21st. Scattered convection developed along the surface trough during the evening hours over Texas County.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS AMA wrote it up.
The combination of a weak upper trough, a surface trough over the central Oklahoma Panhandle, and a marginally unstable environment allowed convection to develop during the evening hours of the 21st. Scattered convection developed along the surface trough during the evening hours over Texas County. This convection quickly became strong to severe. After producing isolated severe hail the storms transitioned to heavy rain production and did not produce any further severe weather.
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 Amarillo, TX wrote its last area forecast discussion before the first event at Jul 21, 3:11 PM CST, 2 hours 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 411 PM CDT MON JUL 21 2014 .DISCUSSION... FOR TONIGHT...THE COMBINATION OF STRONG DAYTIME HEATING AND ATTENDANT ATMOSPHERIC INSTABILITY...SUFFICIENT MOISTURE...AND WEAK CONVERGENCE ALONG A SFC TROF AXIS OVER ERN NM WILL LIKELY RESULT IN THE DEVELOPMENT OF ISOLD TO SCT TSTMS ACROSS WRN AND NWRN ZONES. HAVE GONE WITH AREAL QUAILFIER TERMINOLOGY USING ISOLD TO SCT VALUES FOR THIS EVENING ACROSS THIS AREA...THEN NON MENTIONABLE VALUES AFTER 06Z TONIGHT. A SIMILAR SCENARIO MAY EVOLVE LATE TUE AFTERNOON AND EVENING ACROSS PARTS OF THE WRN AND NWRN ZONES...AND HAVE DECIDED TO INSERT SLGT CHC POPS IN THAT AREA FOR TUE EVENING AT THIS TIME. WEDNESDAY THRU FRIDAY WILL CONTINUE TO FEATURE AN UPPER LEVEL RIDGE OF HIGH PRESSURE MEANDERING AROUND THE SRN HIGH PLAINS WITH ABOVE NORMAL TEMPERATURES AND GENERALLY DRY CONDITIONS. ALL MEDIUM RANGE MODELS CONTINUE TO SUGGEST THE UPPER LEVEL RIDGE OF HIGH PRESSURE WILL WANDER BACK TO THE WEST LATE THIS WEEK TO A POSITION AROUND THE FOUR CORNERS REGION AS AN UPPER LEVEL ERN US TROF DEVELOPS. THIS PATTERN CHANGE WILL PLACE THE PNHDLS IN NW FLOW ALOFT BEGINNING AS EARLY AS FRIDAY...BUT MORE LIKELY DURG THE UPCOMING WEEKEND AND CONTINUING BEYOND THIS FCST PCKG IF MODEL PROGS VERIFY. THIS WILL EVENTUALLY TRANSLATE TO COOLER TEMPERATURES AND INCREASED CHANCES FOR SHOWERS AND THUNDERSTORMS. HAVE INCORPORATED SLGT CHC POPS FOR NWRN ZONES FRIDAY NIGHT AND SUNDAY...AND SLGT CHC POP VALUES AREAWIDE FOR SATURDAY NIGHT AS WELL AS SUNDAY NIGHT AND NEXT MONDAY BASED ON THE EXPECTED PATTERN CHANGE AND REASONABLE MEDIUM RANGE MODEL AGREEMENT. ANDRADE && .FIRE WEATHER... NEITHER ELEVATED NOR CRITICAL FIRE WEATHER CONDITIONS ARE ANTICIPATED THRUOGH THE END OF THIS WEEK. ANDRADE && .PRELIMINARY POINT TEMPS/POPS... AMARILLO TX 70 96 68 96 68 / 10 10 10 5 5 BEAVER OK 71 102 70 101 70 / 10 5 10 5 5 BOISE CITY OK 67 96 66 96 66 / 30 10 20 5 5 BORGER TX 74 100 73 100 73 / 10 10 10 5 5 BOYS RANCH TX 68 97 67 97 67 / 20 10 10 5 5 CANYON TX 70 96 67 96 68 / 10 10 10 5 5 CLARENDON TX 70 99 70 99 70 / 10 5 5 5 5 DALHART TX 66 98 65 98 66 / 20 10 20 5 5 GUYMON OK 70 102 69 101 69 / 20 10 10 5 5 HEREFORD TX 69 96 67 96 67 / 10 10 10 5 5 LIPSCOMB TX 70 100 70 99 70 / 10 5 5 5 5 PAMPA TX 70 98 70 98 70 / 10 5 5 5 5 SHAMROCK TX 71 100 71 99 71 / 10 5 5 5 5 WELLINGTON TX 72 101 72 101 72 / 10 5 5 5 5 && .AMA WATCHES/WARNINGS/ADVISORIES... TX...NONE. OK...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 449 PM CDT MON JUL 21 2014 OKZ001>003-TXZ001>020-221100- CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB- HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON- GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH- 449 PM CDT MON JUL 21 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE...TONIGHT. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING ACROSS THE WESTERN AND NORTHWESTERN SECTIONS OF THE OKLAHOMA AND TEXAS PANHANDLES. A FEW STORMS THAT DEVELOP MAY BECOME STRONG TO MARGINALLY SEVERE...WITH GUSTY WINDS OF 50 TO 60 MPH POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ISOLATED THUNDERSTORMS MAY FORM ACROSS NORTHWEST SECTIONS OF THE OKLAHOMA AND TEXAS PANHANDLES TUESDAY EVENING...FRIDAY NIGHT...AND SUNDAY. ISOLATED THUNDERSTORMS WILL ALSO BE POSSIBLE ACROSS ALL OF THE OKLAHOMA AND TEXAS PANHANDLES SATURDAY NIGHT. ANY STORMS THAT DEVELOP DURING THIS TIME PERIOD SHOULD REMAIN BELOW SEVERE LEVELS AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. ANDRADE
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
458 PM CDT MON JUL 21 2014
OKZ001-212245-
CIMARRON OK-
458 PM CDT MON JUL 21 2014
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CIMARRON COUNTY UNTIL
545 PM CDT...
AT 455 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 17 MILES NORTH OF BOISE CITY...MOVING NORTHEAST
AT 5 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM.
* LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF NORTHERN CIMARRON COUNTY.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 3700 10267 3700 10241 3698 10241 3684 10253
3691 10271 3693 10273 3700 10270 3700 10268
TIME...MOT...LOC 2158Z 207DEG 3KT 3696 10258
SCHNEIDERSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 525 PM CDT MON JUL 21 2014 OKZ001-TXZ001-212330- CIMARRON OK-DALLAM TX- 525 PM CDT MON JUL 21 2014 ...SIGNIFICANT WEATHER ADVISORY FOR EXTREME NORTHERN DALLAM AND WESTERN CIMARRON COUNTIES UNTIL 630 PM CDT... AT 524 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 7 MILES NORTHEAST OF FELT...OR 12 MILES SOUTHWEST OF BOISE CITY...MOVING NORTHEAST AT 10 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... BOISE CITY... FELT... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. LAT...LON 3688 10262 3673 10237 3649 10264 3659 10283 TIME...MOT...LOC 2226Z 216DEG 9KT 3661 10267 SCHNEIDER
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
527 PM CDT MON JUL 21 2014
OKZ002-212330-
TEXAS OK-
527 PM CDT MON JUL 21 2014
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN TEXAS COUNTY UNTIL 630 PM
CDT...
AT 524 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 7 MILES SOUTH OF OPTIMA...OR 9 MILES EAST OF
GUYMON...MOVING NORTHEAST AT 5 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM.
* LOCATIONS IMPACTED INCLUDE...
TYRONE... OPTIMA... HOOKER...
BAKER... ADAMS...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 3698 10095 3674 10103 3656 10128 3667 10146
3700 10132
TIME...MOT...LOC 2227Z 222DEG 5KT 3666 10131
SCHNEIDERThe Dodge City radar (KDDC), 165 km away, was scanning. The volume nearest the first event began at 23:19 UTC.
2 hail. Local standard time, as filed.
Scattered thunderstorms developed over Texas County during the evening hours of the 21st. As the storms moved over the town of Optima (Texas County), a member of the public reported ping pong ball size hail (1.50 inches). After producing this hail the storms moved southeastward across the county.
Scattered thunderstorms developed over Texas County during the evening hours of the 21st. As the storms moved over the town of Guymon (Texas County), a member of the public reported golf ball size hail (1.75 inches) 6 miles north of Guymon (Texas County). After producing this hail the storms moved southeastward across the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2014Every state in 2014This day in weather historyWarnings in Oklahoma, July 2014
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: 528122, 528123.