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The Dexes / Funnel Cloud / 245511

Eventdex · Funnel Cloud

GRAND FORKS

245511 · 47.960, -97.210

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The record

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

Event typeevent_typeFunnel Cloud
NOAA NCEI event IDncei_event_id245,511
Episode IDepisode_id42,070
Begin UTCbegin_utc2010-06-17T21:46:00+00:00
End UTCend_utc2010-06-17T21:46:00+00:00
StatestateNORTH DAKOTA
County/zone typecz_typeC
County/zone namecz_nameGRAND FORKS
Latitudelat47.960
Longitudelon-97.210
End latitudeend_lat47.960
End longitudeend_lon-97.210
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceASOS
Episode narrativeepisode_narrativeConditions were ripe by the afternoon of the 17th for a major severe weather outbreak. A surface low had moved into east central North Dakota with an occluded front extending to the southeast. Warm and humid air was in place ahead of the front, with a much drier airmass pushing in behind it. The 500mb low was located over northwest North Dakota with a nice southwest to northeast upper jet pushing into eastern North Dakota. Two lines of convection formed by late afternoon, one from Roseau County down toward Eastern Otter Tail County and the other over east central North Dakota. Nearly all the cells that formed took on a classic hook shape with rotation very evident on radar imagery. Multiple tornado warnings were issued before the event wound down by mid evening. The strongest tornadoes were determined to be EF4 tornadoes, two in west central Minnesota and one in northeast North Dakota.
Event narrativeevent_narrativeObservers at the Grand Forks International Airport reported a wall cloud south of the airport complex moving north. Subsequent reports indicated a tornado passing near the airport from 2147Z to 2151Z. Peak winds at the airport reached 48 knots as the tornado passed west of the airport.
Yearyear2,010

Provenance

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GRAND FORKS — Funnel Cloud — TerraPulse