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June 14, 2012
The NWS Hastings coverage area is located within the orange outlined area, with the Interstate highways in red.
(Click Radar Loop To Enlarge)
Increased lift associated with an upper level low pressure system shifting east acros southern Canada brought large hail, damaging wind gusts and at times torrential rainfall to a good portion of the NWS Hastings coverage area, primarily south of Interstate 80. Activity started during the mid to late afternoon hours, on both the western and eastern edges of the coverage area, eventually filling in along a surface cold front draped across the region. Ample instability was in place by mid afternoon, and even though the overall deep layer shear was on the weak side, many thunderstorms were able to become severe. Through the evening hours, this frontal boundary was the main focus for activity, but outflow boundaries from ongoing storms also aided in additional development. Thunderstorms were slow to move but eventually drifted off to the southeast, and their slow motion allowed for many locations to tally up 3 to 4+ inches of rain.
Before the severe weather event on Thursday, June 14th, the past 2 weeks had been fairly quiet across the NWS Hastings coverage area, and outside of a few isolated hail reports on June 1st and 13th, the last day with multiple severe weather reports was May 30th.
Some of the notable severe weather reports from this event:
Below is a table of some of the higher rainfall total from around the area, ending Friday morning, June 15th. These totals come from NWS Cooperative Observers (*) and Nebraska Rainfall Assessment and Information Network Observers.
Below are 3 water vapor satellite images taken through the event on June 14th at 5 p.m. and 8 p.m., as well as 12 a.m. June 15th. The increase in colors of the images shows how the thunderstorm activty developed and evolved through the event. One can see the notable increase between 5 and 8 p.m., when the brunt of the event was ongoing, and the gradual southeastward shift through 12 a.m. The - and + symbols on the images depict lightning activity.
|This page was composed by the staff at the National Weather Service in Hastings, Nebraska.|