Thunderstorms developed across the western South Plains on the afternoon of the 19th despite large scale subsidence from a departing short wave. These scattered thunderstorms congealed into an MCS as they approached the Rolling Plains.
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The episode as NWS LUB wrote it up.
Thunderstorms developed across the western South Plains on the afternoon of the 19th despite large scale subsidence from a departing short wave. These scattered thunderstorms congealed into an MCS as they approached the Rolling Plains. This MCS produced severe winds up to 69 mph in Dickens and Crosby Counties. Late on the 19th into the early morning hours of the 20th, isolated thunderstorms developed above the cool but humid outflow air over the Rolling Plains. One of these storms produced hail to ping pong ball size in Crosbyton (Crosby County).
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 Lubbock, TX wrote its last area forecast discussion before the first event at Jun 19, 5:28 PM CST, 27 minutes earlier.
Area Forecast Discussion National Weather Service Lubbock TX 628 PM CDT Fri Jun 19 2020 .AVIATION... TS at KLBB and KPVW to move east very early in the TAF period. The threat at KCDS will last a bit longer. Stratus with MVFR potential still looks pretty good at all terminals around sunrise Saturday, likely lasting through the morning. && .PREV DISCUSSION... /issued 305 PM CDT Fri Jun 19 2020/ SHORT TERM... Awaiting thunderstorm initiation. CAMs support this occurring around 3 pm, and there is a cumulus field developing just to the southwest of the forecast area. Modest subsidence on the backside of a departing upper level short wave trough may delay the onset by an hour or two, but still expect the models to be correct with their development of thunderstorms across the western South Plains that eventually congeal into an MCS near the I-27 corridor. Forecast remains in good shape for this evening with little in the way of change to the forecast elements. Could see some precip linger past 06Z across the eastern zones as well as the possibility of some showers/storms developing toward sunrise Saturday in relation to an MCS potentially coming out of southwestern Kansas or along its outflow. Will run with a slight chance to account for these two possibilities. Thunderstorm development much less certain for Saturday. There is no clear signal in the models with much apparently hinging on location of remnant boundaries, the degree of heating, and strength of cap. Will broadbrush a slight chance mention at this time. LONG TERM... As the upper level trough flattens and shifts east we'll dry out and heat up. Max temperatures on Sunday and Monday will approach triple digits for most of us. Northwest flow aloft will persist through midweek, with relief from the heat provided by a cold front pushing through Monday night through early Tuesday. The front is relatively weak and shallow, but slight chance POPs are reasonable across the southern Texas Panhandle and northern Rolling Plains. As the embedded shortwave associated with the front moves east, the front becomes more diffuse and stalls along the I20 corridor by early Wednesday morning. Moisture return seems favorable over the stalled front as it slowly lifts back north with a building ridge to the west. Slight chance POPs are painted across the region given the boundary and moisture return. Strength and coverage of any convection remains uncertain, but with the building ridge to the west, wind shear will be a limiting factor yet again. Temperatures behind the cold front fall into the 80s for most of us for the second half of next week. && .LUB WATCHES/WARNINGS/ADVISORIES... None. && 07
Hazardous Weather Outlook National Weather Service Lubbock TX 320 PM CDT Fri Jun 19 2020 TXZ021>044-202030- Parmer-Castro-Swisher-Briscoe-Hall-Childress-Bailey-Lamb-Hale- Floyd-Motley-Cottle-Cochran-Hockley-Lubbock-Crosby-Dickens-King- Yoakum-Terry-Lynn-Garza-Kent-Stonewall- 320 PM CDT Fri Jun 19 2020 This Hazardous Weather Outlook is for the South Plains, Rolling Plains and the far Southern Texas Panhandle. .DAY ONE...This Afternoon and Tonight Thunderstorms are expected across the South Plains, Rolling Plains, and extreme southern Panhandle through the rest of the afternoon and evening hours. Some of these thunderstorms will likely become severe. Large hail to 1.5" in diameter and damaging winds up to 80 mph will be the primary threats. Storms will also have the potential to produce heavy rainfall and localized flooding where recent heavy rains have occurred. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time.
The Lubbock radar (KLBB), 76 km away, was scanning. The volume nearest the first event began at 23:53 UTC.
2 thunderstorm wind, 1 hail. Local standard time, as filed.
A Texas Tech University West Texas mesonet site near McAdoo measured a peak wind gust of 69 mph at 1800 CST. Severe wind gusts were intermittently reported from 1755 CST through 1815 CST.
A Texas Tech University West Texas mesonet station near White River Lake measured a wind gust to 66 mph.
A delayed public report was received of ping pong ball sized hail with an early morning isolated thunderstorm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2020Every state in 2020This day in weather historyWarnings in Texas, June 2020
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: 894018, 894019, 899779.