Overview
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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. |
Tornadoes:
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Tornado #1 - 2 E Gorin, MO
Track Map  
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Tornado #2 - W of Bowen IL
Track Map  |
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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 |
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Storm Reports
| Interactive Storm Report Map | SPC Storm Reports |
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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
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Rain Reports
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| 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
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Environment
SPC Outlooks
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| 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
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| 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
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| Figure 8: 12z 10/14/17 DVN Sounding | Figure 9: 19z 10/14/17 DVN Sounding | Figure 10: 00z 10/15/17 DVN Sounding |
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