Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Overview

A fast moving line of showers and thunderstorms tracked east over eastern Iowa late Thursday evening. A brief, weak tornado touched down just northwest of Olin, IA damaging a metal shed and displacing a fire hydrant.

Radar Image (11:15 P.M.) (IEM) (Click to zoom) (Click here for Animation)

Tornado
Photos & Video
Environment

Tornadoes:

Tornado - Olin, IA
Jones County

Date	05/03/2018
Time (Local)	11:15 - 11:17 pm CDT
EF Rating	EF-0
Est. Peak Winds	75 mph
Path Length	0.1 mile
Max Width	10 yards
Injuries/Deaths	0 / 0
Summary: An EF-0 touched down northwest of Olin, IA late Thursday night. A 150 lb fire hydrant was displaced 15-20 ft and a metal shed was lofted 70 ft away.

Track Map

Downloadable KMZ File

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Photos & Video:


Olin, IA (NWS Survey)	Olin, IA (NWS Survey)

Environment


Figure 1: SPC Day 1 Outlook (20:00 UTC)	Figure 2: SPC Day 1 Tornado Outlook (20:00 UTC)	Figure 3: SPC Day 1 Hail Outlook (20:00 UTC)


Figure 4: SPC Day 1 Wind Outlook (20:00 UTC)	Figure 5: DVN Sounding: 5/3/18 19z	Figure 6: DVN Sounding: 5/4/18 00z

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Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

May 3, 2018 Tornado Survey Information