Severe Storms October 14th, 2017 - Updated 10/16 4pm

Overview

Several rounds of showers and thunderstorms developed across the region on Saturday, October 14th, ahead of a strong storm system moving across the central Great Plains. Some of these thunderstorms became severe, producing large hail up to half dollar size, wind damage across Warren, Clark, and Scotland counties, heavy rainfall from 1 to 3 inches over eastern Iowa and northwest Illinois, and two tornadoes.

One tornado touched down just east of Gorin, MO completely destroying a farm outbuilding and damaging two other buildings. The other tornado touched down west of Bowen IL.

Storm Prediction Center Event Review

Tornadoes:

Tornado #1 - 2 E Gorin, MO
Scotland County

Date	10/14/2017
Time (Local)	509 - 510 pm CDT
EF Rating	EF-1
Est. Peak Winds	95 mph
Path Length	0.1 miles
Max Width	10 yards
Injuries/Deaths	0/0
Summary: A tornado touched down two miles east of Gorin and completely destroyed one farm outbuilding and caused damage to two others.

Track Map


NWS Storm Survey	NWS Storm Survey

Tornado #2 - W of Bowen IL
Hancock county

Date	10/14/17
Time (Local)	625 - 626 pm CDT
EF Rating	EF-0
Est. Peak Winds	80 mph
Path Length	0.8 miles
Max Width	25 yards
Injuries/Deaths	0/0
Summary: An EF-0 tornado touched down west of Bowen downing several trees and a roof blown off an outbuilding. A tree was uprooted, and a large tree branch fell on a house.

Track Map

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

Interactive Storm Report Map	SPC Storm Reports


PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE QUAD CITIES IA IL 913 PM CDT SAT OCT 14 2017 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0452 PM HAIL 5 E CANTRIL 40.64N 91.98W 10/14/2017 M0.25 INCH VAN BUREN IA TRAINED SPOTTER 0510 PM HAIL WEST BURLINGTON 40.82N 91.18W 10/14/2017 M1.00 INCH DES MOINES IA EMERGENCY MNGR 0511 PM TSTM WND DMG 1 E SOUTH GORIN 40.36N 92.01W 10/14/2017 SCOTLAND MO TRAINED SPOTTER A FARMSTEAD WAS DAMAGED AND POWER LINES DOWN JUST EAST OF GORIN. POSSIBLE TORNADO. FIRST CALL CAME IN AT 512 PM. 0519 PM TSTM WND DMG 1 ENE NEEPER 40.34N 91.77W 10/14/2017 CLARK MO 911 CALL CENTER CAR CRASHED INTO A LARGE TREE BRANCH THAT WAS DOWN ON THE HIGHWAY. 0548 PM TSTM WND DMG MONMOUTH 40.93N 90.63W 10/14/2017 WARREN IL EMERGENCY MNGR APPROXIMATELY A 20 FOOT BY 80 FOOT SECTION OF ROOF TORN OFF THE FIRE STATION. 0548 PM HAIL MONMOUTH 40.91N 90.64W 10/14/2017 E1.00 INCH WARREN IL EMERGENCY MNGR 0548 PM HAIL MONMOUTH 40.91N 90.64W 10/14/2017 E1.00 INCH WARREN IL EMERGENCY MNGR 0550 PM HAIL 1 N MONMOUTH MUNICIPAL 40.95N 90.63W 10/14/2017 M1.25 INCH WARREN IL STORM CHASER 0629 PM HEAVY RAIN 1 NE FORT MADISON 40.64N 91.33W 10/14/2017 M3.00 INCH LEE IA TRAINED SPOTTER 2.00 INCHES FELL THIS AFTERNOON. 0635 PM HAIL 1 S PLYMOUTH 40.28N 90.92W 10/14/2017 E1.00 INCH HANCOCK IL CO-OP OBSERVER 0730 PM HEAVY RAIN BUSHNELL 40.55N 90.50W 10/14/2017 M1.24 INCH MCDONOUGH IL TRAINED SPOTTER RAINFALL SINCE 9AM THIS MORNING 0807 PM HEAVY RAIN 1 ESE MUSCATINE 41.41N 91.06W 10/14/2017 M3.50 INCH MUSCATINE IA TRAINED SPOTTER TOTAL RAINFALL SINCE EARLY MORNING 0821 PM HEAVY RAIN COYNE CENTER 41.40N 90.57W 10/14/2017 M5.60 INCH ROCK ISLAND IL TRAINED SPOTTER RAINFALL SINCE MIDNIGHT - OFFICIAL NWS OBSERVER 0834 PM HEAVY RAIN SSE LE CLAIRE 41.60N 90.36W 10/14/2017 M3.10 INCH SCOTT IA TRAINED SPOTTER RAINFALL SO FAR FOR TODAY. 0843 PM HEAVY RAIN SSW MORRISON 41.80N 89.97W 10/14/2017 M4.60 INCH WHITESIDE IL TRAINED SPOTTER RAINFALL SINCE EARLY MORNING

Rain Reports


Figure 1: Local 24-hr Rainfall	Figure 2: Radar Estimated Rainfall	Figure 3: Regional 24-hr Rainfall

24 hour precipitation reports (in Inches), for eastern Iowa, northwest and west central Illinois, and northeast Missouri. Reported between Midnight and 9 AM, Sunday October 15, 2017. ....IOWA.... Fort Madison 0.9 NE 2.74 Burlington 6.5 SSW 2.51 Salem 3.1 ESE 2.05 Keokuk LD19 2.00 Burlington Arpt 1.99 Brighton 1.96 Salem 1S 1.87 Le Claire 1.8 NNE 1.82 Donnellson 1.81 Washington 1.75 Muscatine 1.4 N 1.60 Delmar 2.3 NW 1.56 Davenport 0.9 WNW 1.55 Eldridge 0.6 ESE 1.54 Ainsworth 7.4 N 1.53 Muscatine 2N 1.52 Eldridge 0.7 SSW 1.48 Keosauqua 1.40 De Witt 4S 1.38 Davenport Arpt 1.36 NWS Johnston* 1.35 Lost Nation 0.3 S 1.30 Fairfield 1.30 Toledo 1.29 Calamus 2.0 NE 1.29 Iowa City Arpt 1.28 Bellevue LD12 1.25 Lowden 1.23 Center Point 0.6 NNW 1.22 Ottumwa ASOS 1.20 Vinton 1.19 Waterloo ASOS 1.15 Solon 0.3 ESE 1.14 Coggon 1.10 Iowa City 1.06 Cascade 1.02 Iowa City 4.5 N 1.02 Newton 1.00 Marshalltown ASOS 0.98 Elkader 6SSW 0.97 Marshalltown 0.95 Central City 6.7 W 0.93 Strawberry Point 0.93 Ely 0.5 SE 0.93 Goose Lake 6.4 SSW 0.91 Kalona 7.3 NNW 0.89 Dubuque #3 0.89 Anamosa 3 SSW 0.88 Marion 1.2 NE 0.88 Dubuque Arpt 0.86 Dubuque LD11 0.86 Maquoketa 4W 0.84 Oelwein AWOS 0.84 De Witt 0.84 Marion 1.7 NNW 0.84 Grinnell 0.79 Pella AWOS 0.78 Oskaloosa AWOS 0.75 Williamsburg 0.75 Cedar Rapids Arpt 0.75 Mount Auburn 2.2 NNW 0.74 Parnell 0.1 SSW 0.68 Fayette 0.66 Cedar Rapids 2.7 NE 0.64 Cedar Rapids 2.2 WSW 0.63 Beaconsfield 0.60 Grinnell AWOS 0.59 Centerville 0.53 Perry 0.49 Boone 0.43 Cresco 0.37 Guttenberg Dam 10 0.35 Tripoli 0.29 Hampton 0.23 Mason City ASOS 0.19 ....ILLINOIS.... Romeoville 4.29 Geneseo 2.0 NW 3.71 Tiskilwa 2.1 N 3.65 Princeton 1.1 SE 3.41 Princeton 3.41 Quad City Arpt 3.33 Ottawa 3.20 Rochelle AWOS 3.14 Princeton 1.5 S 2.87 Moline 0.7 NNE 2.83 Gladstone LD18 2.72 Steward 2.62 Walnut 5.3 ENE 2.49 New Windsor 2.0 N 2.48 Mundelein 2.32 New Boston LD17 2.10 Ill. City LD16 2.05 Peoria ASOS 2.01 Colchester 3.5 NE 1.77 Macomb 1.72 Morrison 3.2 E 1.65 Coleta 1.4 SSW 1.60 Rockford ASOS 1.53 Dallas City 3.0 SSE 1.47 Orangeville 2.8 NW 1.29 Bentley 1.28 Chadwick 2.7 WSW 1.26 Davis 0.5 N 1.25 Elizabeth 1.15 Winslow 4.3 ESE 1.13 Augusta 1.09 Roscoe 2SE 1.06 Pearl City 0.4 SW 1.04 Quincy ASOS 1.02 Shannon 0.2 S 0.99 Freeport 0.92 Galena 0.91 Quincy Dam 21 0.86 St Anne 0.84 Ridott 0.1 NE 0.83 Bloomington Airport 0.61 Lincoln NWS 0.31 Decatur Airport 0.27 Jacksonville AWOS 0.00 Joliet 0.00 ....MISSOURI.... Columbia 1.41 Canton LD20 1.37 Memphis 0.82 Kirksville ASOS 0.79 Chillicothe 0.26 ....WISCONSIN.... Beloit-College 1.31 Monroe 1.02 Delavan-1 W-WWTP 0.94 Brodhead 0.91 Whitewater 0.79 Sullivan-NWS 0.70 Steuben 4SE 0.66 Prairie du Chien AWOS 0.62 Darlington 0.55 Allenton-WWTP 0.55 La Crosse WFO 0.43 Watertown-AWOS 0.36 Madison-ASOS 0.32 ....MINNESOTA.... Theilman 1SSW 0.24 Byron 4N 0.17

Environment

SPC Outlooks


Figure 1: SPC Day 1 Outlook	Figure 2: SPC Day 1 Tornado Outlook	Figure 3: SPC Day 1 Wind Outlook	Figure 4: SPC Day 1 Hail Outlook

Near-storm environment


Figure 5: Precipitable Water 22z 10/14	Figure 6: SBCAPE/SBCIN 22z 10/14	Figure 7: 0-1 km Shear 00z 10/15

Additional environmental data


Figure 8: 12z 10/14/17 DVN Sounding	Figure 9: 19z 10/14/17 DVN Sounding	Figure 10: 00z 10/15/17 DVN Sounding

Media use of NWS Web News Stories is encouraged!
Please acknowledge the NWS as the source of any news information accessed from this site.

Interactive Radar Loop Courtesy IEM Mesonet