EF-1 Tornado in McGregor

NWSChat – NOAA’s National Weather Service

NWS DAMAGE SURVEY FOR 07/19/2017 TORNADO EVENT...

OVERVIEW...A strong wind producing system moved through
northeast Iowa on the afternoon of July 20, 2017. Very 
isolated tornadoes occurred in association with this
system. 

A Tornado Warning was issued for northern Clayton county
including McGregor, IA at 5:54 pm.  


Rating:                 EF-1
Estimated peak wind:    110 mph
Path length /Statute/:  5.7 miles
Path width /Maximum/:   400 yards
Fatalities:             0 
Injuries:               2 - minor

Start date:             Jul 19 2017 
Start time:             6:08 pm 
Start location:         5 miles west of McGregor, IA 

End date:               Jul 19 2017 
End time:               6:16 pm 
End location:           McGregor, IA


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Posted under NOAA, Severe Weather

This post was written by Schnack on July 20, 2017

Preliminary survey results from this morning: preliminary EF-2 rating for tornado path including Central City and Prairieburg. The National Weather Service survey crew will be back out tomorrow to complete the survey and report more specific findings.

 

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Posted under NOAA, Severe Weather

This post was written by Schnack on June 29, 2017

EF-0 Tornado in Salem

NWS Damage Survey for 05/10/17 Tornado Event

Salem Iowa Tornado

RATING:                 EF-0
ESTIMATED PEAK WIND:    60 MPH
PATH LENGTH /STATUTE/:  0.91 miles
PATH WIDTH /MAXIMUM/:   20 yards
FATALITIES:             0
INJURIES:               0

START DATE:             05/10/2017 
START TIME:             256 PM CDT
START LOCATION:         2.3 W Salem / Henry / Iowa
START LAT/LON:          40.8519 / -91.6631

END DATE:               05/10/2017
END TIME:               259 PM CDT
END LOCATION:           1.4 W Salem / Henry / Iowa
END LAT/LON:            40.8528 / -91.6458 

Tornado touched down in a field and was on the ground for 
2-3 minutes. Flying dirt was observed but no damage was 
reported. 

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES BASED ON THE DAMAGE THEY CAUSE.

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
 
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Posted under NOAA, Severe Weather

This post was written by Schnack on May 11, 2017

May 8, 1988 Tornadoes

On Mother’s Day in 1988 there was a tornado outbreak in eastern Iowa with almost two dozen tornadoes reported in Iowa. The map below shows the location, track and rating of each tornado.

The map below is the surface map from that morning as the cold front approached from the west.

The 500 mb map below shows the trough to the west of Iowa.

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Posted under NOAA, Weather History

This post was written by Schnack on May 8, 2017

May Snow

Here is a look back at the snow during the first few days of May in 2013.

https://www.weather.gov/dmx/maysnow

http://www.weather.gov/arx/may0213

 

 

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Posted under NOAA, Winter Weather

This post was written by Schnack on May 2, 2017

EF-0 Tornado Near Carroll Wednesday Evening

PRELIMINARY NWS DAMAGE SURVEY FOR APRIL 19TH TORNADO EVENT...

.CARROLL IOWA TORNADO...

RATING: EF-0
  ESTIMATED PEAK WIND: 70 MPH
 PATH LENGTH /STATUTE/: 0.25 MILES
 PATH WIDTH /MAXIMUM/: 50 YARDS
 FATALITIES: 0
 INJURIES: 0

START DATE: APRIL 19 2017
 START TIME: 8:04 PM CDT
 START LOCATION: 2 MILES SOUTHEAST OF CARROLL
 START LAT/LON: 42.0492

END DATE: APRIL 19 2017
 END TIME: 8:05 PM CDT
 END LOCATION: 2 MILES SOUTHEAST OF CARROLL
 END_LAT/LON: 42.0513

NWS STORM SURVEY CONFIRMED A BRIEF TORNADO TOUCHDOWN OCCURRED ABOUT 2 MILES
 SOUTHEAST OF CARROLL...WITH THE TORNADO ON THE GROUND A VERY SHORT DISTANCE.
 PRIMARY DAMAGE WAS TO A MACHINE SHED WHERE A SIGNIFICANT PORTION OF THE SHEET
 METAL ROOF WAS REMOVED. THIS IS CONSISTENT WITH WINDS AROUND 70 MPH...OR
 EF-0 DAMAGE.

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
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Posted under NOAA, Severe Weather

This post was written by Schnack on April 20, 2017

EF-1 Tornado in Jones County Saturday evening

 



NWS DAMAGE SURVEY FOR 04/15/17 TORNADO EVENT…

OVERVIEW…Several severe thunderstorms developed across eastern Iowa
during the evening of April 15th. While hail and heavy rainfall were primarily
produced, one storm produced a weak tornado across western Jones County.

Additional information may be added to the bottom of this statement as it
becomes available.

TORNADO…NE Anamosa/SE Langworthy Iowa…

RATING: EF-1
ESTIMATED PEAK WIND: 100 MPH
PATH LENGTH /STATUTE/: 3.22 MILES
PATH WIDTH /MAXIMUM/: 25 YARDS
FATALITIES: 0
INJURIES: 0

START DATE: 04/15/17
START TIME: 850 PM CDT
START LOCATION: 4 NE Anamosa / Jones / Iowa
START LAT/LON: 42.1417 / -91.2288

END DATE: 04/15/17
END TIME: 855 PM CDT
END LOCATION: 4 SE Langworthy / Jones / Iowa
END LAT/LON: 42.1469 / -91.1678

EF-1 TORNADO BEGAN AROUND 850 PM CDT SATURDAY EVENING…4
MILES NORTHEAST OF ANAMOSA. THE TORNADO TRACKED AROUND 3
MILES TO THE EAST BEFORE LIFTING…WITH DAMAGE TO TREES
AND OUTBUILDINGS ALONG THE PATH.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES BASED ON THE DAMAGE THEY CAUSE.

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

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Posted under NOAA, Severe Weather

This post was written by Schnack on April 17, 2017

Tornado Outbreak in 2001

On April 10-15, 2001, there was a tornado outbreak with 79 tornadoes across six states from Texas to Iowa. On the 11th, there were 28 in Iowa setting the daily tornado record for the state.

Click here for more information/photos about this outbreak from the National Weather Service in Des Moines.

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Posted under NOAA, Severe Weather

This post was written by Schnack on April 11, 2017

“Matthew” and “Otto” Retired as Hurricane Names

Hurricane Matthew

The World Meteorological Organization (WMO) will retire the names “Matthew” and “Otto” for Atlantic tropical systems, meaning they will no longer be assigned to future storms. These will be the 81st and 82nd names retired for the Atlantic basin. This happens when the tropical cyclone was very deadly or causes a devastating amount of damage during its lifespan.

Matthew will be replaced with the name “Martin” and Otto will be replaced with the name “Owen”. These changes will occur in 2022, when the 2016 list of names is reused. There are 6 lists of names, one list for one year. One list is repeated every seven years. For more information on Atlantic tropical system naming, click here.

For more information on Matthew and Otto being retired, click here.

Matthew forecasts and advisories.

Otto forecasts and advisories.

For other tropical cyclones in the Atlantic that have been retired, click here.

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Posted under NOAA, Weather History, Weather Trivia

This post was written by Rachael Peart on March 27, 2017

13 Tornadoes Monday Evening

 

The above tornado records are from 1980-2015.

 

 

Muscatine
RATING: EF-2
ESTIMATED PEAK WIND: 115 MPH
PATH LENGTH: 1.8 MILES
PATH WIDTH /MAXIMUM: 200 YARDS
FATALITIES: 0
INJURIES: 3

 

Seymour
RATING: EF-2
ESTIMATED PEAK WIND: 115-125 MPH
PATH LENGTH: 12.6 MILES
PATH WIDTH /MAXIMUM: 200 YARDS
FATALITIES: 0
INJURIES: 3

 

South of Harcourt
RATING: EF-0
ESTIMATED PEAK WIND: 70 MPH
PATH LENGTH: 2.3 MILES
PATH WIDTH /MAXIMUM/: 30 YARDS
FATALITIES: 0
INJURIES: 0

 

North of Dayton
RATING: EF-0
ESTIMATED PEAK WIND: 70 MPH
PATH LENGTH: 1.4 MILES
PATH WIDTH /MAXIMUM/: 30 YARDS
FATALITIES: 0
INJURIES: 0

 

West of Knoxville
RATING: EF-1
ESTIMATED PEAK WIND: 90 to 100 MPH
PATH LENGTH: 0.9 MILES
PATH WIDTH /MAXIMUM/: 100 YARDS
FATALITIES: 0
INJURIES: 0

 

North of Knoxville
RATING: EF-1
ESTIMATED PEAK WIND: 85 to 95 MPH
PATH LENGTH: 1.5 MILES
PATH WIDTH /MAXIMUM/: 80 YARDS
FATALITIES: 0
INJURIES: 0

 

Centerville
RATING: EF-2
ESTIMATED PEAK WIND: 115-125 MPH
PATH LENGTH: 8.1 MILES
PATH WIDTH /MAXIMUM/: 200 YARDS
FATALITIES: 0
INJURIES: 0

 

Blue Grass/NW Davenport/Eldridge Iowa…
RATING: EF-2
ESTIMATED PEAK WIND: 120 MPH
PATH LENGTH: 25.3 MILES
PATH WIDTH /MAXIMUM/: 1,000 YARDS
FATALITIES: 0
INJURIES: 0

 

Bernard
RATING: EF-0
ESTIMATED PEAK WIND: 95 MPH
PATH LENGTH: 5.7 MILES
PATH WIDTH /MAXIMUM/: 25 YARDS
FATALITIES: 0
INJURIES: 0

 

Bennett
RATING: EF-1
ESTIMATED PEAK WIND: 110 MPH
PATH LENGTH: 16.8 MILES
PATH WIDTH /MAXIMUM/: 100 YARDS
FATALITIES: 0
INJURIES: 0

 

Low Moor
RATING: EF-1
ESTIMATED PEAK WIND: 110 MPH
PATH LENGTH: 4.36 MILES
PATH WIDTH /MAXIMUM/: 50 YARDS
FATALITIES: 0
INJURIES: 0

 

Walcott
RATING: EF-2
ESTIMATED PEAK WIND: 115 MPH
PATH LENGTH: 34.7 MILES
PATH WIDTH /MAXIMUM/: 200 YARDS
FATALITIES: 0
INJURIES: 0

 

Grandview
RATING: EF-2
ESTIMATED PEAK WIND: 115 MPH
PATH LENGTH: 0.3 MILES
PATH WIDTH /MAXIMUM/: 150 YARDS
FATALITIES: 0
INJURIES: 0

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Posted under NOAA, Severe Weather

This post was written by Schnack on March 7, 2017