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The Dexes / Lightning Report (Storm Events) / 754478

Eventdex · Lightning Report (Storm Events)

CASS

754478 · 41.410, -95.030

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The record

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

Event typeevent_typeLightning
NOAA NCEI event IDncei_event_id754,478
Episode IDepisode_id125,811
Begin UTCbegin_utc2018-05-29T22:55:00+00:00
End UTCend_utc2018-05-29T22:55:00+00:00
StatestateIOWA
County/zone typecz_typeC
County/zone namecz_nameCASS
Latitudelat41.410
Longitudelon-95.030
End latitudeend_lat41.410
End longitudeend_lon-95.030
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property10.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceBroadcast Media
Episode narrativeepisode_narrativeGeneral surface high pressure remained in the region, keeping the area hot. With moisture off the from remnants of Alberto and general southerly flow down to the Gulf of Mexico, moisture was fairly plentiful with surface dew points in the mid to upper 60s. Support for sustained severe weather was fairly lackluster, with limited hail CAPE, negligible effective shear, but overall SBCAPE values did exceed 3000 to 4000 J/kg. DCAPE values were relatively high in excess of 1000 to 1200 J/kg, raising concern for strong downdrafts/microbursts. ||Lingering convection from western Kansas the day before slowly worked towards western Iowa in the morning hours as waves ejected from a western upper level trough. Additionally, weak warm air advection aided initial storm initiation across the western half of Iowa ahead of the larger wave moving off the Rockies. Initially, numerous storms were seen by early afternoon with most being sub-severe. Outflows form early storms also proceeded to initiate subsequent storms, eventually congealing briefly into a linear looking structure. Nearly all severe reports received were wind related from microbursts and collapsing storms as well as one landspout near Ames. Power outages occurred with the storms with at over 9,000 customers without power at one time or another between Ames and Des Moines.
Event narrativeevent_narrativeKJAN Radio reported lightning struck outdoor wiring and entered a house, causing smoldering insulation in the attic. Time was estimated from radar.
Yearyear2,018

Provenance

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CASS — Lightning Report (Storm Events) — TerraPulse