Public Information Statement
Issued by NWS Des Moines, IA

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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
410 PM CST Tue Mar 7 2017

...PRELIMINARY SUMMARY FROM NWS DAMAGE SURVEY FOR MARCH 6TH TORNADO EVENT...

.Tornado #1 Seymour, IA...

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

START DATE:             March 6 2017
START TIME:             0816 PM CST
START LAT/LON:          40.6365_/_-93.1969

END DATE:               March 6 2017
END TIME:               0828 PM CST
END_LAT/LON:            40.7396_/_-93.0007

SURVEY_SUMMARY: NWS storm survey confirmed a tornado touched down
about five miles southwest of Seymour in Wayne County where several
trees sustained major damage and several farmsteads where damaged.
The tornado then tracked northeast through rural sections of Wayne
County and produced sporadic tree damage.  The tornado then
moved into the south side of Seymour and produced significant damage to
several homes and structures with partial collapse of walls and roof
structures and widespread tree damage. A brick school building also
sustained major damage to its roof and walls.  The tornado tracked northeast
out of Seymour and damaged another residence along 110th Avenue with several
trees being topped. The tornado continued across mainly rural areas
of Wayne and Appanoose Counties before crossing IA Highway 2 where minor
damage occurred to a farmstead.  The tornado appeared to dissipate
shortly after crossing Highway 2. The worst damage from this
tornado occurred in Seymour where damage was consistent with winds of
115 to 125 mph - or EF2 damage. It should be noted that the tornado
may not have been continuous along the the entire 12 mile path...with
damage more intermittent.

.Tornado #2 Centerville, IA...

RATING:                 EF-2
ESTIMATED PEAK WIND:    115 to 125 MPH
PATH LENGTH /STATUTE/:  8.10 MILES
PATH WIDTH /MAXIMUM/:   200 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             March 6 2017
START TIME:             0835 PM CST
START LAT/LON:          40.7090_/_-92.8614

END DATE:               March 6 2017
END TIME:               0845 PM CST
END_LAT/LON:            40.7556_/_-92.7227

SURVEY_SUMMARY: NWS storm survey confirmed a tornado touchdown
on the south side of Centerville just after 830 pm.  The tornado
produced significant damage to a manufacturing facility with
a partial collapse of walls and roof structures.  The tornado
tracked very quickly northeast damaging an outbuilding and taking
a large section of a roof off a residence along Highway 2. Damage
was also found to several outbuildings at a farmstead south of Udell
with a camper being tipped on its side.  The worst damage occurred
near Centerville where damage was consistent with winds of 115 to
125 mph - or EF2 damage. Damage to the east was not quite as intense
generally EF0 or EF1 damage.  It should be noted that the tornado
may not have been continuous along the the entire 8 mile path...as
the damage appeared to be more intermittent.

.Tornado #3 West of Knoxville, IA...

RATING:                 EF-1
ESTIMATED PEAK WIND:    90 to 100 MPH
PATH LENGTH /STATUTE/:  0.90 MILES
PATH WIDTH /MAXIMUM/:   100 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             March 6 2017
START TIME:             0732 PM CST
START LAT/LON:          41.3012_/_-93.2408

END DATE:               March 6 2017
END TIME:               0733 PM CST
END_LAT/LON:            41.2901_/_-93.2324

SURVEY_SUMMARY: NWS storm survey confirmed a brief tornado touchdown
approximately 5 miles west of Knoxville.  An outbuilding was heavily
damaged in this area and significant roof damage occurred to a residence.
This is consistent with winds of 90 to 100 mph - or EF1 damage.

.TORNADO #4  North of Knoxville, IA...

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

START DATE:             March 6 2017
START TIME:             0737 PM CST
START LAT/LON:          41.3746_/_-93.1340

END DATE:               March 6 2017
END TIME:               0739 PM CST
END_LAT/LON:            41.3861_/_-93.1095

SURVEY_SUMMARY: NWS storm survey confirmed a second brief tornado touchdown
approximately 4 miles north of Knoxville.  Roof damage occurred to a residence
with large sections of shingles removed along with sporadic tree damage.
This is consistent with winds of 85 to 95 mph - or EF1 damage.

.Tornado #5 South of Harcourt, IA...

RATING:                 EF-0
ESTIMATED PEAK WIND:    70 MPH
PATH LENGTH /STATUTE/:  2.30 MILES
PATH WIDTH /MAXIMUM/:   30 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             March 6 2017
START TIME:             0620 PM CST
START LAT/LON:          42.2352_/_-94.2035

END DATE:               March 6 2017
END TIME:               0625 PM CST
END_LAT/LON:            42.2558_/_-94.1676

SURVEY_SUMMARY: Video evidence submitted by a storm chaser showed
a brief tornado touchdown approximately a mile south of Harcourt with
dust and debris being lifted into the air.

.TORNADO #6  North of Dayton, IA...

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

START DATE:             March 6 2017
START TIME:             0629 PM CST
START LAT/LON:          41.3746_/_-93.1340

END DATE:               March 6 2017
END TIME:               0633 PM CST
END_LAT/LON:            41.3861_/_-93.1095

SURVEY_SUMMARY: Video evidence submitted by a firefighter showed
a brief tornado touchdown approximately 3 miles northwest of Dayton with
dust and debris being lifted into the air.


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 EVENTS AND PUBLICATION IN
NWS STORM DATA.

$$

FOWLE



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