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The Dexes / Dust / 1269990

Eventdex · Dust

HARLAN

1269990

The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

event_typeDust Storm
ncei_event_id1,269,990
episode_id201,731
begin_utc2025-05-15T02:00:00+00:00
end_utc2025-05-15T04:00:00+00:00
stateNEBRASKA
cz_typeZ
cz_nameHARLAN
deaths_direct0
deaths_indirect0
injuries_direct0
injuries_indirect0
damage_property0.00K
damage_crops0.00K
wfo_sourcePublic
episode_narrativeIsolated strong to severe thunderstorms formed in the early evening hours across a small part of central Nebraska along the tail end (i.e. south end) of a line of thunderstorms which extended north. Hail and thunderstorm wind reports were confined to Valley county, including ping pong size hail. Though the actual thunderstorms only impacted a small area, a byproduct of the thunderstorms were the strong outflow winds of 50 to 60 mph to the south across Dawson, Gosper, Phelps, Furnas and Harlan counties. Conditions were dry to start, thanks to the drought-laden spring, and when the strong wind rolled over freshly tilled fields, the result was blowing dust. In some cases, a wall of dust reduced visibility to near zero in open country. ||The weather map depicted a strongly negatively tilted upper-level nosing its way into western Nebraska. As the trough advanced, a deep surface low (992mb) formed in southwest Nebraska and moved north northeast into northern Nebraska. A surge of warm air ahead of the low pressure pushed temperatures to 90 degrees in south central Nebraska. Low-level moisture did push north, but surface dewpoints could only manage around 60 degrees by late afternoon. While the system was dynamic in nature, effective wind shear in south central Nebraska was only near 30 knots. Deep moisture convergence was centered in north central Nebraska as slightly warmer air surging north in the mid-levels helped to cap thunderstorms developing south of Nebraska Highway 92. The result was only a few locations northwest of Grand Island experienced severe weather before outflow winds became dominant well south of the thunderstorms.
event_narrativeThe combination of a passing synoptic cold front and an outflow boundary from convection well to the north produced wind gusts over 50 MPH at times. These wind gusts along with the dry conditions across the area resulted in widespread blowing dust, at times dropping visibility to near zero and brown-out conditions.
year2,025

Provenance

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Storage: spine

HARLAN — Dust — TerraPulse