Traer Tornado Rated EF-1

The second of two tornadoes, across eastern Iowa, moved across Tama County north of Traer. The map below is the track of the tornado from the NWS.

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Rating: EF-1
Estimated Peak Wind: 90 mph
Path Length: 6.6 miles
Max Path Width: 200 yards

Most of the damage was to trees and crops. The only structure was early in the tornado path to an outbuilding on a far.

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Posted under NOAA, Severe Weather

This post was written by Schnack on July 7, 2014

Reinbeck Tornado Rated EF-1

The National Weather Service survey team has preliminary information on the tornado near Reinbeck.

Rating: EF-1
Estimated Peak Wind: 100 mph
Path Length: 3.1 miles
Max Path Width: 100 Yards

Started 2.0 miles WNW of Reinbeck and ended 1.7 miles S of Reinbeck

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Posted under NOAA, Severe Weather

This post was written by Schnack on July 7, 2014

NW Iowa Tornado Watch

Tornado Watch is in effect until 8 PM for NW Iowa and SW Minnesota. No storms expected early this afternoon in eastern Iowa.
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Posted under NOAA, Severe Weather

This post was written by Schnack on June 16, 2014

Updated Severe Weather Outlook For Tuesday Night

June 2 Svr Wx Outlook

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Posted under NOAA, Severe Weather

This post was written by Schnack on June 2, 2014

Tornado NE Wapello County EF 1

The storm in northeast Wapello County Sunday evening produced an EF 1 tornado. Click on the text below for the details NWS storm survey.

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Posted under NOAA, Severe Weather

This post was written by Schnack on April 28, 2014

Keokuk/Johnson County Tornado

The NWS storm survey team rated the tornado in Keokuk/Johnson County Sunday evening as an EF 1.

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Posted under NOAA, Severe Weather

This post was written by Schnack on April 28, 2014

Lone Tree Tornado Rating EF0

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NWS DAMAGE SURVEY FOR 04/13/14 TORNADO EVENT…

 

A SEMI-ISOLATED STORM ON THE SOUTHERN END OF
A LARGER THUNDERSTORM COMPLEX PRODUCED A BRIEF TORNADO.

 

LONE TREE TORNADO…

 

RATING:                 EF-0

ESTIMATED PEAK WIND:    65 MPH

PATH LENGTH /STATUTE/:  1 MILE

PATH WIDTH /MAXIMUM/:   25 YARDS

FATALITIES:             0

INJURIES:               0

 

START DATE:             APRIL 13…2014

START TIME:             5:56 PM CDT

START LOCATION:         .5 MILES WEST OF LONE TREE (JOHNSON COUNTY)

 

END DATE:               APRIL 13…2014

END TIME:               5:58 PM CDT

END LOCATION:           .5 MILES NORTH OF LONE TREE

 

SURVEY SUMMARY: A TEAM FROM THE NATIONAL WEATHER SERVICE QUAD CITIES FORECAST OFFICE SURVEYED THE AREA AROUND LONE TREE LATE THIS MORNING.  NO DAMAGE WAS FOUND.  PATH IS ESTIMATED FROM WITNESSES AND RADAR. SEVERAL WITNESSES DESCRIBED A FUNNEL THAT WENT UP AND DOWN NUMEROUS TIMES. PHOTO AND VIDEO DOCUMENTATION SHOW THAT THE TORNADO DID TOUCH DOWN AT LEAST BRIEFLY TO THE WEST AND NORTHWEST OF TOWN.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE FOLLOWING

CATEGORIES.

EF0…WEAK……65 TO 85 MPH

EF1…WEAK……86 TO 110 MPH

EF2…STRONG….111 TO 135 MPH

EF3…STRONG….136 TO 165 MPH

EF4…VIOLENT…166 TO 200 MPH

EF5…VIOLENT…>200 MPH

 

NOTE: THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO

CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS

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Posted under NOAA, Severe Weather

This post was written by Schnack on April 14, 2014

April and Spring Outlook

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Posted under Long Range Outlook, NOAA

This post was written by Schnack on March 20, 2014

Spotter Training Classes This Week

Spotter Class 2

 

Click image to enlarge

 

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Posted under NOAA, Severe Weather

This post was written by Schnack on March 16, 2014

Earliest Snow of the Season

In September 24-26, 1942, a storm system brought rain and snow to Iowa.  This would also be the earliest snow for many locations. All of the snow reports for eastern Iowa were after midnight making the official earliest first snow September 26, 1942.
Waterloo: Trace
Dubuque: Trace
Cedar Rapids: 0.5″

The images below are the monthly reports that are filled out with the daily weather conditions. The first image is the official NWS site at Waterloo.
Click images to enlarge.

Sep 26 Snow ALO

The image below is from the river gauge site in Waterloo.

Sep 26 ALO River Report

The image below is for Cedar Rapids.

Sep 26 Snow CID

The image below is for Dubuque. This Dubuque report was at LD11 not at the Dubuque Airport.

Sep 26 DBQ Snow

 

The National Weather Service in Des Moines posted this in their weather history section about the storm.

On This Day in Iowa Weather History

September 25

1942: A powerful storm system brought a remarkable early snowfall to most of Iowa. Although the snow melted as it fell across most of the state many stations reported their earliest trace of snowfall on record, and in north central Iowa slightly cooler temperatures near the surface allowed the snow to accumulate to as much as 4.0 inches at Allison, Forest City, and Mason City. In portions of eastern Iowa the snow fell so rapidly that it accumulated faster than it could melt resulting in a brief 4.0 inch accumulation at Millerton. At many of the locations where measurable accumulations did occur the wet, heavy snow stuck to wires and trees that were still in full leaf. Many branches and trees were reported down around Centerville, Forest City, Mason City, and Millerton and telephone and electric services were disrupted around Estherville and Mason City. Two men from Calmar were killed on Highway 9 near Cresco when a tree fell in front of their truck. At Des Moines a trace of snow was reported at the airport on the 25th and 0.3 inches of snow was measured at the city office downtown, making this the earliest measurable snowfall on record in the city of Des Moines. In fact 1881, 1942, and 1985 are the only three years in which snow has ever been recorded at Des Moines in the month of September.

The National Weather Service in La Crosse posted this in their weather history section:

September 26 1942 Winona, MN (25, coldest September temperature). Also on this date, Caledonia, MN (5″) and Fayette, IA (1″), and La Crosse, WI (0.2″) had their earliest measurable snowfall. Snow fell in early morning, mostly melting as it fell.

Click on the image below for a more detailed look at this winter storm.

Sep 26 Snow Map

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Posted under NOAA, Weather History, Winter Weather

This post was written by Schnack on September 26, 2013