Slight Risk for Excessive Rainfall and Severe Thunderstorms Thursday

Additional rounds of thunderstorms are expected Thursday and Thursday night across Oklahoma and north Texas, with risks for both large hail and flash flooding. Strong winds may accompany any storms from east Texas northeast through the lower Great Lakes. Read More >

Overview

A strong area of low pressure lifted northeast across Iowa during the afternoon and evening of November 11, 2015. A line of strong to severe thunderstorms raced through the area at about 50 to 65 mph producing widespread damaging winds of 60-70 mph with a few 80+ mph reports. Rainfall amounts were mainly between 0.25 inches and 0.50 inches with some higher amounts up to 1.25 inches. Pea to penny sized hail was also reported.

Links to NWS Text Products are courtesy of the Iowa Environmental Mesonet.

Note: The information below is preliminary and subject to change pending final review of the event and publication in NWS Storm Data.

Tornado Statistics
Radar Data
Storm Reports
Rainfall
Environment
Miscellaneous

Tornado Statistics

Tornado #1: Le Claire, IA / Scott Co.

Date	11/11/2015
Time (Local)	636 PM - 641 PM
EF Rating	EF-1
Est. Peak Winds	100 MPH
Path Length	2.4 MILES
Max Path Width	50 YARDS
Injuries/Fatalities	NONE
Summary: Tornado developed on the Mississippi River and tracked northeast into Le Claire. Damage primarily to trees. Several homes had roof and siding damage. The roof of one home was lifted and flipped over onto a neighboring home.

Track Map

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Tornado #2: Geneseo, IL / Henry Co.

Date	11/11/2015
Time (Local)	639 PM - 645 PM
EF Rating	EF-1
Est. Peak Winds	110 MPH
Path Length	4.75 MILES
Max Path Width	50 YARDS
Injuries/Fatalities	NONE
Summary: Trees damaged along the path. One large machine shed destroyed and a house partially unroofed when its porch was torn off.

Track Map

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Tornado #3: Arbela, MO / Scotland Co.

Date	11/11/2015
Time (Local)	440 PM - 443 PM
EF Rating	EF-1
Est. Peak Winds	100 MPH
Path Length	2.5 MILES
Max Path Width	75 YARDS
Injuries/Fatalities	NONE
Summary: Power poles snapped and trees damaged. Hay bales tossed. Grain bin and old barn destroyed.

Track Map

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Tornado #4: What Cheer, IA to North English, IA / Keokuk Co. & Iowa Co.

Date	11/11/2015
Time (Local)	419 PM - 441 PM
EF Rating	EF-1
Est. Peak Winds	110 MPH
Path Length	23.4 MILES*
Max Path Width	50 YARDS
Injuries/Fatalities	NONE
Summary: Tornado developed near the Mahaska/Keokuk County line and tracked northeast through What Cheer, then continued an *intermittent track into Iowa County before lifting north of North English. Multiple outbuildings destroyed. garage and Cattle shed destroyed. Power poles downed and large tree snapped.

Track Map

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Tornado #5: Osborn, IL/Rock Island Co.

Track Map

Date	11/11/2015
Time (local)	6:37 PM - 6:38PM
EF Rating	EF - 0
Est. Peak Wind	85 MPH
Path Length	0.4 MILES
Max Path Width	100 YARDS
Injuries/Fatalties	NONE
Summary: A tornado develop just north northeast of Osborn Illinois and tracked northeastward. A total of 4 houses sustained minor damage, outbuildings damaged, a corn crib was moved 40 yards and destroyed. The tornado also knocked over a privacy fence and trees were down. A neighbor has a barn with the roof off and set beside it with aluminum everywhere. Another neighbor had an outbuilding shredded by the storm.

Click Map for Larger Image

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

Radar Data

Storm Reports

Preliminary Local Storm Report...Summary

Click on the map for an interactive display.

Rain Reports

Local Rainfall	Regional Rainfall
(Created by 11am. Click to enlarge.)	(Click to enlarge.)

Miscellaneous


	Satellite Loop
	(Click to enlarge.)


Summaries from other NWS Offices
NWS Omaha, NE NWS Des Moines, IA

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SPC Day 3 Categorical Outlook	SPC Day 3 Probabilistic Outlook	SPC Day 2 Categorical Outlook	SPC Day 2 Probabilistic Outlook

SPC Day 1 Categorical Outlook	SPC Day 1 Tornado Outlook	SPC Day 1 Hail Outlook	SPC Day 1 Wind Outlook

Slight Risk for Excessive Rainfall and Severe Thunderstorms Thursday

Nov. 11, 2015 Event Summary