Overview
A severe weather outbreak occurred on Monday, March 6th 2017. Six tornadoes were documented to have occurred in the National Weather Service Des Moines County Warning Area, including 2 that were rated EF2 strength. Numerous reports of hail and wind reports were noted with many of the storms.
Tornadoes:
Tornado #1 - Seymour, IA
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Tornado #2 - Centerville, IA
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Tornado #3 - West of Knoxville, IA
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Tornado #4 - North of Knoxville, IA
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Tornado #5 - Near Harcourt, IA
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Tornado #6 - Near Dayton, IA
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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 |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 912 PM CST TUE MAR 7 2017 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0420 PM HAIL 4 NE SOMERS 42.42N 94.38W 03/06/2017 U1.00 INCH WEBSTER IA TRAINED SPOTTER WIND DRIVEN HAIL BROKE WINDOW SCREENS AT THE RESIDENCE. . 0424 PM TSTM WND DMG 3 NW FENTON 43.26N 94.47W 03/06/2017 EMMET IA TRAINED SPOTTER SPOTTER REPORTED BROKEN STORM WINDOWS AS WELL AS A FEW MEDIUM TO LARGE TREE BRANCHES DOWN. . 0424 PM HAIL 5 E BARNUM 42.51N 94.27W 03/06/2017 E1.75 INCH WEBSTER IA TRAINED SPOTTER BETWEEN FORT DODGE AND BARNUM. 0425 PM HAIL 3 SW BADGER 42.58N 94.20W 03/06/2017 M1.00 INCH WEBSTER IA TRAINED SPOTTER COOP OBSERVER/TRAINED SPOTTER REPORTED UP TO QUARTER SIZED HAIL. 0426 PM TSTM WND GST 4 W FENTON 43.23N 94.51W 03/06/2017 E60 MPH PALO ALTO IA TRAINED SPOTTER PEA TO DIME SIZE HAIL AS WELL. . 0435 PM HAIL 3 NW BADGER 42.65N 94.19W 03/06/2017 M1.00 INCH HUMBOLDT IA PUBLIC PEA TO QUARTER SIZED HAIL FOR 5 MINUTES. DELAYED REPORT. . 0435 PM HAIL HUMBOLDT 42.72N 94.22W 03/06/2017 E1.50 INCH HUMBOLDT IA PUBLIC . 0437 PM HAIL HUMBOLDT 42.73N 94.22W 03/06/2017 M1.50 INCH HUMBOLDT IA PUBLIC . 0438 PM HAIL HUMBOLDT 42.72N 94.22W 03/06/2017 M1.00 INCH HUMBOLDT IA PUBLIC . 0440 PM HAIL HUMBOLDT 42.73N 94.22W 03/06/2017 M2.00 INCH HUMBOLDT IA PUBLIC PUBLIC REPORT RELAYED BY MEDIA ON TWITTER. 0440 PM HAIL HUMBOLDT 42.72N 94.22W 03/06/2017 M1.75 INCH HUMBOLDT IA PUBLIC PUBLIC REPORTED GOLF BALL SIZED HAIL IN HUMBOLDT. 0440 PM NON-TSTM WND GST CRESTON 41.06N 94.36W 03/06/2017 M58 MPH UNION IA MESONET DELAYED REPORT FROM THE AWOS. . 0442 PM HAIL LAKOTA 43.38N 94.10W 03/06/2017 E1.75 INCH KOSSUTH IA PUBLIC PUBLIC REPORT OF GOLF BALL HAIL FROM KAAL-TV VIA SOCIAL MEDIA. TIME AND LOCATION ESTIMATED BY RADAR. DELAYED REPORT. 0445 PM HAIL 3 WNW LU VERNE 42.94N 94.13W 03/06/2017 M0.75 INCH KOSSUTH IA TRAINED SPOTTER PEA TO PENNY SIZED. 0450 PM TSTM WND GST 1 SW ROCKWELL CITY 42.39N 94.64W 03/06/2017 E60 MPH CALHOUN IA TRAINED SPOTTER NICKEL SIZE HAIL AS WELL. . 0455 PM HAIL 3 E RAKE 43.48N 93.86W 03/06/2017 U1.50 INCH WINNEBAGO IA FIRE DEPT/RESCUE . 0500 PM TSTM WND DMG ROCKWELL CITY 42.40N 94.64W 03/06/2017 CALHOUN IA TRAINED SPOTTER 2 INCH BRANCHES BLOWN OVER. TIN BLOWN OFF METAL BUILDINGS. DOORS BLOWN OFF GRAIN ELEVATOR. 0500 PM HAIL 3 WNW GOLDFIELD 42.75N 93.98W 03/06/2017 M1.00 INCH HUMBOLDT IA TRAINED SPOTTER TRAINED SPOTTER REPORTED LOTS OF QUARTER SIZED HAIL. . 0505 PM HAIL BUFFALO CENTER 43.39N 93.94W 03/06/2017 M1.00 INCH WINNEBAGO IA TRAINED SPOTTER TRAINED SPOTTER REPORTED ONGOING QUARTER SIZED HAIL. 0511 PM HAIL 5 NNE MANSON 42.59N 94.49W 03/06/2017 E0.88 INCH POCAHONTAS IA TRAINED SPOTTER . 0515 PM HAIL 5 E CHURDAN 42.15N 94.38W 03/06/2017 M1.25 INCH GREENE IA PUBLIC 1 TO 1.25 INCH HAIL REPORTED ON SOCIAL MEDIA. 0516 PM HAIL MANSON 42.53N 94.54W 03/06/2017 M0.25 INCH CALHOUN IA TRAINED SPOTTER . 0518 PM HAIL GOWRIE 42.28N 94.29W 03/06/2017 M1.00 INCH WEBSTER IA TRAINED SPOTTER DIME TO QUARTER SIZED HAIL COVERING THE GROUND. 0520 PM HAIL GOWRIE 42.28N 94.29W 03/06/2017 M1.00 INCH WEBSTER IA PUBLIC REPORTED ON SOCIAL MEDIA. . 0526 PM HAIL 2 SW BADGER 42.59N 94.18W 03/06/2017 M0.25 INCH WEBSTER IA TRAINED SPOTTER . 0530 PM TORNADO 3 ENE HARCOURT 42.28N 94.13W 03/06/2017 WEBSTER IA EMERGENCY MNGR SPOTTER REPORTED SEEING SWIRLING DUST, DAMAGE HAS BEEN REPORTED IN THE AREA. . 0533 PM HAIL 3 WNW LEHIGH 42.37N 94.11W 03/06/2017 M1.75 INCH WEBSTER IA PUBLIC . 0540 PM HAIL EAGLE GROVE 42.67N 93.90W 03/06/2017 M0.50 INCH WRIGHT IA PUBLIC HAIL LASTED 15 MINUTES. REPORT WAS VIA SOCIAL MEDIA. 0542 PM TORNADO 3 NE HARCOURT 42.28N 94.13W 03/06/2017 WEBSTER IA EMERGENCY MNGR WEBSTER COUNTY EM REPORTED TREE DAMAGE AND DEBRIS IN A 1.5 MILE LONG AND 30 YARD WIDE DAMAGE PATH. 0550 PM TSTM WND GST WEBSTER CITY 42.47N 93.82W 03/06/2017 M69 MPH HAMILTON IA MESONET . 0555 PM TSTM WND DMG WEBSTER CITY 42.47N 93.82W 03/06/2017 HAMILTON IA TRAINED SPOTTER SEMI BLOWN ON ITS SIDE ON HIGHWAY 20 NEAR WEBSTER CITY. TIME ESTIMATED, BASED ON RADAR. 0600 PM TSTM WND DMG WEBSTER CITY 42.46N 93.82W 03/06/2017 HAMILTON IA PUBLIC THUNDERSTORM WIND TOOK OUT POWER IN WEBSTER CITY. REPORT VIA SOCIAL MEDIA. 0605 PM TSTM WND DMG 4 S ALEXANDER 42.75N 93.46W 03/06/2017 FRANKLIN IA BROADCAST MEDIA DAMAGE TO MACHINE SHED, GREENHOUSE AND TREES BETWEEN ROWAN AND LATIMER ALONG HIGHWAY 3. TIME ESTIMATED BY RADAR. FROM KLMJ RADIO - HAMPTON. . 0618 PM TSTM WND DMG BOXHOLM 42.18N 94.11W 03/06/2017 BOONE IA EMERGENCY MNGR POWER LINES DOWN IN TOWN. 0621 PM TSTM WND GST 1 SW MINBURN 41.75N 94.04W 03/06/2017 E60 MPH DALLAS IA LAW ENFORCEMENT . 0625 PM TSTM WND GST 4 S SHEFFIELD 42.84N 93.22W 03/06/2017 E60 MPH FRANKLIN IA TRAINED SPOTTER TRAINED SPOTTER REPORTED 0.75 INCH DIAMETER HAIL AND ESTIMATED 60 MPH WIND GUSTS. 0626 PM TSTM WND DMG 5 W LUTHER 41.97N 93.92W 03/06/2017 BOONE IA PUBLIC TREE AND FARM OUT BUILDING DAMAGE. ROOF SECTIONS OFF BUILDING. TIME ESTIMATED BY RADAR. . 0631 PM TSTM WND GST 2 S BOONE 42.02N 93.87W 03/06/2017 E60 MPH BOONE IA NWS EMPLOYEE RETIRED NWS EMPLOYEE. FEW PIECES PEA SIZE HAIL AND SMALL TWIGS DOWN. . 0631 PM HAIL 1 N EARLHAM 41.51N 94.12W 03/06/2017 E1.00 INCH DALLAS IA PUBLIC RELAYED FROM LAW ENFORCEMENT. 0632 PM HAIL 4 WNW SHEFFIELD 42.92N 93.28W 03/06/2017 E1.00 INCH CERRO GORDO IA TRAINED SPOTTER NICKEL TO QUARTER SIZED HAIL. 0640 PM TSTM WND DMG 1 NNW GILBERT 42.13N 93.66W 03/06/2017 STORY IA TRAINED SPOTTER DELAYED REPORT. 1-2 FT DIAMETER PINE TREE ACROSS THE ROAD. POWERLINES DOWN IN GILBERT. SMALL TREE UPROOTED, LIMB DAMAGE. . 0641 PM TSTM WND GST 2 S POLK CITY 41.74N 93.72W 03/06/2017 E60 MPH POLK IA OFFICIAL NWS OBS ESTIMATED 50-60 MPH WIND GUSTS AT NWS DES MOINES OFFICE. . 0645 PM TSTM WND GST 2 ESE WAUKEE 41.60N 93.83W 03/06/2017 E60 MPH DALLAS IA PUBLIC 50 TO 60 MPH WIND GUSTS AND PEA SIZED HAIL. . 0645 PM TSTM WND GST 2 S AMES 41.99N 93.62W 03/06/2017 M67 MPH STORY IA ASOS . 0700 PM TSTM WND DMG 1 SSW MOUNT AYR 40.71N 94.24W 03/06/2017 RINGGOLD IA CO-OP OBSERVER MINOR TREE DAMAGE. DAMAGE TO STREET SIGNS. 0700 PM HAIL 1 NNE MARTENSDALE 41.39N 93.73W 03/06/2017 M0.75 INCH WARREN IA PUBLIC REPORT VIA SOCIAL MEDIA. 0700 PM HAIL CUMMING 41.49N 93.76W 03/06/2017 E0.88 INCH WARREN IA TRAINED SPOTTER . 0703 PM TSTM WND GST 1 NE WEST DES MOINES 41.58N 93.74W 03/06/2017 E60 MPH POLK IA TRAINED SPOTTER DIME SIZE HAIL. 0707 PM HAIL NORWALK 41.50N 93.68W 03/06/2017 E0.88 INCH WARREN IA TRAINED SPOTTER . 0712 PM TSTM WND DMG 5 E BOONE 42.05N 93.78W 03/06/2017 BOONE IA STORM CHASER 3 FT. DIAMETER TREE DOWN ACROSS 210TH ST. IN THE UNINCORPORATED TOWN OF JORDAN. CHASER SAID STRAIGHT LINE WINDS DID THE DAMAGE. . 0716 PM TSTM WND GST 3 N INDIANOLA 41.40N 93.57W 03/06/2017 E60 MPH WARREN IA EMERGENCY MNGR NICKEL HAIL AS WELL. CITY OF ACKWORTH HAS NO POWER. . 0716 PM HAIL 2 N INDIANOLA 41.39N 93.57W 03/06/2017 E1.00 INCH WARREN IA EMERGENCY MNGR . 0718 PM TSTM WND DMG 2 WNW SANDYVILLE 41.38N 93.43W 03/06/2017 WARREN IA TRAINED SPOTTER DOWNED POWER POLE OVER HIGHWAY 92 BLOCKING WESTBOUND TRAFFIC. TIME ESTIMATED BY RADAR. STRAIGHT LINE WINDS. . 0721 PM TSTM WND DMG NEW PROVIDENCE 42.28N 93.17W 03/06/2017 HARDIN IA PUBLIC POWER IS REPORTED OUT IN IN NEW PROVIDENCE WITH VERY STRONG WINDS. ALSO PEA TO NICKEL SIZED HAIL. RELAYED FROM LAW ENFORCEMENT. . 0722 PM TORNADO 2 SSW MILO 41.26N 93.46W 03/06/2017 WARREN IA EMERGENCY MNGR POSSIBLE TORNADO. BARN DESTROYED. 0725 PM TSTM WND DMG 1 S WELLSBURG 42.42N 92.93W 03/06/2017 GRUNDY IA EMERGENCY MNGR POWER POLES DOWN AND A CATTLE BUILDING DAMAGED NEAR E35 AND T19. 0730 PM TORNADO 2 W KNOXVILLE 41.32N 93.14W 03/06/2017 MARION IA TRAINED SPOTTER TRAINED SPOTTER REPORTS SMALL TORNADO ON THE GROUND SEEN DURING LIGHTNING. 0733 PM TSTM WND GST LAMONI 40.62N 93.94W 03/06/2017 M77 MPH DECATUR IA MESONET . 0736 PM TSTM WND GST 3 N INDIANOLA 41.40N 93.57W 03/06/2017 E60 MPH WARREN IA TRAINED SPOTTER NICKEL HAIL AS WELL. CITY OF ACKWORTH HAS NO POWER. . 0737 PM TSTM WND DMG 4 NW KNOXVILLE 41.36N 93.16W 03/06/2017 MARION IA EMERGENCY MNGR STRUCTURE DAMAGE REPORTED BY MARION COUNTY EMERGENCY MANAGER. REPORT LOCATION AND TIME ESTIMATED VIA RADAR. 0740 PM TORNADO 2 S LAKE RED ROCK 41.39N 93.10W 03/06/2017 MARION IA PUBLIC POSSIBLE TORNADO - FRONT PORCH BLOWN OFF. WINDOWS BLOWN OUT. PINE TREES SHEARED OFF THE TOP. DAMAGE TOWARD ILLINOIS DR. . 0745 PM TORNADO 5 NW PELLA 41.46N 92.99W 03/06/2017 MARION IA EMERGENCY MNGR UNCONFIRMED TORNADO. SIGNIFICANT DAMAGE TO OUTBUILDINGS IN THE AREA. . 0745 PM TSTM WND GST 4 E ALBION 42.11N 92.92W 03/06/2017 M64 MPH MARSHALL IA ASOS . 0748 PM TSTM WND DMG 6 N PELLA 41.49N 92.91W 03/06/2017 MARION IA PUBLIC 3 OPEN ACCESS WOODEN OUTBUILDINGS WITH SHEET METAL ROOFING FLATTENED. 7 OAK TREES FELLED. SHEET METAL STREWN ACROSS ACREAGE. TIME ESTIMATED BY RADAR. DELAYED REPORT. 0758 PM TSTM WND GST WATERLOO REGIONAL AIRPO 42.56N 92.40W 03/06/2017 M59 MPH BLACK HAWK IA ASOS . 0800 PM TSTM WND GST 1 SSE CEDAR FALLS 42.50N 92.44W 03/06/2017 E60 MPH BLACK HAWK IA PUBLIC . 0805 PM HAIL SULLY 41.58N 92.85W 03/06/2017 E0.88 INCH JASPER IA PUBLIC REPORT VIA SOCIAL MEDIA. . 0820 PM TORNADO SEYMOUR 40.69N 93.12W 03/06/2017 WAYNE IA EMERGENCY MNGR MULTIPLE DWELLINGS DAMAGED. EXTENT UNKNOWN. . 0820 PM TSTM WND DMG 1 W SEYMOUR 40.68N 93.15W 03/06/2017 WAYNE IA TRAINED SPOTTER POWER OUT 1W OF SEYMOUR. VERY STRONG WINDS AND HEAVY RAINFALL. . 0826 PM TSTM WND DMG 1 S CHELSEA 41.90N 92.39W 03/06/2017 TAMA IA EMERGENCY MNGR POWER LINES DOWN, HOUSE DAMAGED, BARN BLOWN DOWN. . 0826 PM TSTM WND DMG 2 S CHELSEA 41.90N 92.39W 03/06/2017 TAMA IA EMERGENCY MNGR POWER LINES DOWN, HOUSE DAMAGED, BARN BLOWN DOWN. . 0827 PM TSTM WND GST CHELSEA 41.92N 92.40W 03/06/2017 E60 MPH TAMA IA TRAINED SPOTTER QUARTER SIZE HAIL. 0830 PM TORNADO 2 SE CENTERVILLE 40.71N 92.85W 03/06/2017 APPANOOSE IA EMERGENCY MNGR UNCONFIRMED TORNADO. REPORT OF DAMAGE TO INDUSTRIAL BUILDINGS. POWER POLES SNAPPED. SEMI TRUCKS BLOWN OVER. . 0832 PM TSTM WND DMG 1 W SEYMOUR 40.68N 93.15W 03/06/2017 WAYNE IA TRAINED SPOTTER POWER OUT 1W OF SEYMOUR. VERY STRONG WINDS AND HEAVY RAINFALL. . 0832 PM TSTM WND DMG 1 SSE CENTERVILLE 40.72N 92.87W 03/06/2017 APPANOOSE IA EMERGENCY MNGR SEMI AND CAMPER FLIPPED OVER. POWER POLES SNAPPED OFF. . 0832 PM TSTM WND DMG 1 SSE CENTERVILLE 40.72N 92.87W 03/06/2017 APPANOOSE IA EMERGENCY MNGR SEMI AND CAMPER FLIPPED OVER. POWER POLES SNAPPED OFF. . 0901 PM TSTM WND GST OTTUMWA 41.02N 92.42W 03/06/2017 M69 MPH WAPELLO IA MESONET . 0901 PM TSTM WND GST OTTUMWA 41.02N 92.42W 03/06/2017 M69 MPH WAPELLO IA MESONET . 0902 PM TSTM WND DMG 1 E OTTUMWA 41.02N 92.40W 03/06/2017 WAPELLO IA LAW ENFORCEMENT LAW ENFORCEMENT REPORTED SEVERAL TREES DOWN THROUGHOUT TOWN. ROOF OFF A HOUSE ON S. MADISON AVE. METAL SHED DESTROYED ON 50TH ST. TIME AND REPORT ESTIMATED FROM RADAR. DELAYED REPORT. 0910 PM TSTM WND DMG AGENCY 41.00N 92.31W 03/06/2017 WAPELLO IA PUBLIC LARGE PINE TREE UPROOTED.
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