A mid-level jet streak helped boost shear to values above 50 kt late in the afternoon (6/24) and overnight (6/25), favoring organized convection. Sufficient moisture and instability, along with strong baroclinicity accompanied by a cold front, supported thunderstorm development through the evening, and into the overnight period.
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.
A mid-level jet streak helped boost shear to values above 50 kt late in the afternoon (6/24) and overnight (6/25), favoring organized convection. Sufficient moisture and instability, along with strong baroclinicity accompanied by a cold front, supported thunderstorm development through the evening, and into the overnight period. Several severe reports occurred in Texas that evening and into the early overnight.
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 Jun 24, 11:21 PM CST, 1 hour 32 minutes earlier.
Area Forecast Discussion National Weather Service Amarillo TX 1221 AM CDT Mon Jun 25 2018 .AVIATION... For the 06z TAFs... Line of thunderstorms will be the main concern at all terminals for the next few hours. Gusts of 40 kt or higher will be possible. VFR conditions expected to resume by 12z. Cockrell && .PREV DISCUSSION... /Issued 902 PM CDT Sun Jun 24 2018/ UPDATE... Pops adjusted over the next 12 hours to account for storms moving through the Panhandles tonight. Severe Thunderstorm Watch in effect until 4AM CDT for the entire Panhandles. Strong damaging winds and large hail will be the main threats, with brief spin up tornadoes possible. Weber PREV DISCUSSION... /Issued 631 PM CDT Sun Jun 24 2018/ AVIATION...00Z TAFS... Mostly VFR conditions for the TAF period, but MVFR/IFR will not be ruled out, as a cold front will move across the Panhandles starting around 1-2z. This will likely be supplemented with a line of storms. So expect a surge of north winds and -TSRA TEMPO groups have been noted for the thunderstorm potential. Will make amendments as needed if the frontal system speeds up/slows down. After the front moves through, VFR conditions expected to occur at all sites, for the remainder of the period. Winds will diminish to less than 15kts after 09z. Scattered mid and high clouds will give way to clear skies at the end of the forecast period. The only thing to watch, will be if IFR cigs hold a little longer due to excessive rainfall and significant moistening of the lowest levels. Again, will make amendments if necessary for this outcome. Weber PREV DISCUSSION... /Issued 341 PM CDT Sun Jun 24 2018/ DISCUSSION... None of the models today have depicted how things have gone so far, so the forecast is pretty low confidence. Convection this morning in the northeast and in OK has pushed a strong outflow boundary through the area. This has created cloud cover and cool east winds that have severely hampered severe threats for tonight. The area is still recovering with some places such as Dalhart still having low clouds, and temps across the area are only in the low 70s to low 80s in the far south. A special 19Z sounding has the area still capped. The only CAM that has any indication of convection in the appropriate location in OK is the 15Z HRRR. If it verifies, then the front that is progged to push into the Panhandles tonight will bring a line of convection with it from CO. Think that there could be some slight chance for storms with the front to have some severe hail or winds but the tornado threat is quite diminished. The front is likely to bring some gusty winds with it. The remainder of the period is far more uneventful as the mid level closed low in eastern WY/western SD travels slowly into NE and high pressure builds into the southern US through the week. This will leave the Panhandles in dry and warm conditions. By the end of the week, the next long wave upper level trough pushes onshore in the west and will swing the area into southwest flow. The weekend will see the next round of showers and thunderstorms possible. Beat && .AMA Watches/Warnings/Advisories... TX...None. OK...None. && 03/07
Hazardous Weather Outlook...UPDATED National Weather Service Amarillo TX 906 PM CDT Sun Jun 24 2018 OKZ001>003-TXZ001>020-317-251415- Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb- Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson- Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth- Palo Duro Canyon- 906 PM CDT Sun Jun 24 2018 This Hazardous Weather Outlook is for the Texas and Oklahoma Panhandles. .DAY ONE...Tonight. Severe Thunderstorm Watch in effect for the entire Panhandle until 4 AM CDT. Strong damaging winds and large hail, with brief spin up tornadoes possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Thunderstorms will be possible across the portions of the Combined Panhandles Friday evening through Saturday. These storms are not expected to become severe. .SPOTTER INFORMATION STATEMENT... Spotter activation likely tonight.
Special Weather Statement
National Weather Service Amarillo TX
1225 AM CDT MON JUN 25 2018
TXZ005-009-010-014-015-250630-
Hemphill TX-Gray TX-Wheeler TX-Roberts TX-Lipscomb TX-
1225 AM CDT MON JUN 25 2018
...SIGNIFICANT WEATHER ADVISORY FOR WHEELER...NORTHERN GRAY...ROBERTS
AND HEMPHILL COUNTIES UNTIL 130 AM CDT...
At 1225 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 4 miles northwest of Lake Marvin to near
Codman. Movement was southeast at 25 mph.
Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.
Locations impacted include...
Pampa, Canadian, Miami, Briscoe, Wheeler, Lefors, New Mobeetie,
Twitty, Allison, Glazier, Lake Marvin, Kellerville, Lora, Codman and
Mobeetie.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
A severe thunderstorm watch remains in effect until 400 AM CDT for
the Panhandle of Texas.
LAT...LON 3526 10022 3540 10096 3606 10100 3606 10002
3605 10000 3541 10000
TIME...MOT...LOC 0525Z 293DEG 22KT 3593 10022 3564 10079
GuerreroPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1258 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1239 AM NON-TSTM WND GST 12 SW CLAUDE 34.98N 101.50W
06/25/2018 M60 MPH ARMSTRONG TX MESONET
&&
EVENT NUMBER AMA1800361
BEATPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1259 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1240 AM NON-TSTM WND GST 3 NNW PALO DURO CANYON 34.99N 101.69W
06/25/2018 M58 MPH RANDALL TX MESONET
&&
EVENT NUMBER AMA1800362
BEATSpecial Weather Statement National Weather Service Amarillo TX 109 AM CDT MON JUN 25 2018 TXZ014-015-019-020-250715- Gray TX-Wheeler TX-Donley TX-Collingsworth TX- 109 AM CDT MON JUN 25 2018 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WHEELER...SOUTHEASTERN GRAY...COLLINGSWORTH AND NORTHEASTERN DONLEY COUNTIES UNTIL 215 AM CDT... At 109 AM CDT, Doppler radar was tracking a strong thunderstorm 5 miles northwest of Quail, or 16 miles north of Memphis, moving northeast at 40 mph. Nickel size hail and wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Wellington, Shamrock, Mclean, Lutie, Twitty, Dozier, Lela, Quail and Samnorwood. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take shelter in a sturdy building if threatening weather approaches. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A severe thunderstorm watch remains in effect until 400 AM CDT for the Panhandle of Texas. LAT...LON 3476 10050 3520 10075 3552 10000 3487 10000 TIME...MOT...LOC 0609Z 238DEG 35KT 3496 10048 Guerrero
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
111 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 AM NON-TSTM WND GST 3 W DOZIER 35.08N 100.39W
06/25/2018 M58 MPH COLLINGSWORTH TX MESONET
&&
EVENT NUMBER AMA1800363
BEATSpecial Weather Statement National Weather Service Amarillo TX 133 AM CDT MON JUN 25 2018 TXZ011-250715- Oldham TX- 133 AM CDT MON JUN 25 2018 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN OLDHAM COUNTY UNTIL 215 AM CDT... At 133 AM CDT, Doppler radar was tracking a strong thunderstorm 14 miles southeast of Nara Visa, moving east at 35 mph. Nickel size hail and wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Adrian. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take shelter in a sturdy building if threatening weather approaches. Heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && A severe thunderstorm watch remains in effect until 400 AM CDT for the Panhandle of Texas. LAT...LON 3553 10304 3553 10261 3524 10264 3531 10304 TIME...MOT...LOC 0633Z 277DEG 29KT 3542 10298 Ward
The Altus AFB radar (KFDR), 124 km away, was scanning. The volume nearest the first event began at 06:52 UTC.
2 hail, 1 thunderstorm wind. Local standard time, as filed.
Public reported several large tree limbs were blown down in that area.
Mostly dime to nickel size with a few larger than quarters.
Sheriffs office reports hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2018Every state in 2018This day in weather historyWarnings in Texas, June 2018
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: 771068, 771066, 771067.