Lift from the approach of a potent upper level disturbance caused thunderstorms to erupt over West Texas Friday evening (5 April). Initially, low level moisture was on the meager side and this limited both the coverage and rainfall efficiency of the storms. As the moisture and instability increased through the evening and overnight hours, so did the thunderstorm coverage and intensity. Several rotating storms and clusters of storms generated hail, gusty winds and very heavy rainfall.
Nickel size hail was observed in Lubbock, along with numerous reports of pea sized hail. To the southeast, a different storm dropped half dollar sized hail near Justiceburg. The hail-producing storms were also accompanied by brief periods of very heavy rain.
As lift continued to increase through the late evening hours, the thunderstorm activity became more widespread while expanding into the Rolling Plains. Several intense storms tracked repeatedly over the southern Rolling Plains bringing torrential rainfall and swaths of hail and damaging winds.
Unfortunately, Jayton was on the receiving end of the more intense activity. One storm brought strong winds that toppled trees and damaged buildings. The rounds of storms also dumped an impressive 4 inches of rain in town, which lead to some flooding problems.
The showers and thunderstorms continued through much of the night off the Caprock before finally winding down Saturday morning. The below image displays the estimated rainfall for this early April event. A corridor of 2.5+ inches of rain fell over southeast Garza County eastward into Kent and King Counties. Rain totals were lighter in Lubbock, generally from around a quarter to half inch, with the Airport officially recording 0.24 inches. Childress officially recorded 0.87 inches early Saturday morning.
The heaviest core of rain fell over and just upstream of Lake Alan Henry, across southeast Garza County. Runoff from the heavy rain caused the Brazos River near Justiceburg to rapidly rise to action level early Saturday morning before decreasing almost as fast. This water poured into Lake Alan Henry causing it to rise about a foot and a half.
A list of the preliminary storm reports for Friday night (5 April) can be viewed below.
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE LUBBOCK TX 639 AM CDT SAT APR 06 2019 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0645 PM TSTM WND GST WOLFFORTH 33.51N 102.01W 04/05/2019 M59 MPH LUBBOCK TX EMERGENCY MNGR 0916 PM HAIL LAKE ALAN HENRY 33.06N 101.05W 04/05/2019 E1.00 INCH GARZA TX PUBLIC TWITTER REPORT 0920 PM HAIL 4 WSW LUBBOCK 33.55N 101.94W 04/05/2019 E0.88 INCH LUBBOCK TX NWS EMPLOYEE 0928 PM HAIL 2 ENE JUSTICEBURG 33.05N 101.17W 04/05/2019 E1.25 INCH GARZA TX PUBLIC 0950 PM HAIL 5 W CLAIREMONT 33.17N 100.84W 04/05/2019 E0.75 INCH KENT TX CO-OP OBSERVER 1038 PM HAIL TULIA 34.54N 101.77W 04/05/2019 E1.00 INCH SWISHER TX LAW ENFORCEMENT 1150 PM TSTM WND DMG JAYTON 33.25N 100.57W 04/05/2019 KENT TX LAW ENFORCEMENT REPORT OF TREES UPROOTED AND TRANSFORMERS BLOWN IN JAYTON.