Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

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General Overview

	What:	A warm front lifted through the area sparking severe thunderstorms. - More -
	When:	July 16, 2015 - Afternoon and Evening
	Tornado(s):	1) Swedesburg, IA - EF0 2) Port Byron, IL - EF1 3) Cameron, IL - EF2 4) Gladstone, IL - EF1 5) Kirkwood, IL #1 - EF2 6) Kirkwood, IL #2 - EF1
	Rainfall Amounts:	Locally 1 - 3 inches with some higher amounts between 3.5 and 4 inches - (see maps)
	Hail Sizes:	Golf ball - Baseball sized
	Wind Speeds:	60-70 mph
	Flooding Issues:	Prophetstown, IL and Monmouth, IL
	Lightning:	no known lightning damage reported at this time
	Hardest Hit Areas:	Cameron, IL - widespread tree damage, several grain bins destroyed, 2 houses with roofs blown off (See Damage Survey for more information.)

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Maps

Local Rainfall (Created by 11am. Click to enlarge.)	Regional Rainfall (Click to enlarge.)

Local Storm Reports (Click for interactive display.)	Radar (Click to enlarge and loop.)

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Preliminary Local Storm Reports - Courtesy of the Iowa Environmental Mesonet (IEM)

Preliminary Local Storm Report...Summary

Tornado/Severe Thunderstorm Damage Survey (PNSDVN)

	...NWS DAMAGE SURVEY FOR 7/16/15 TORNADO EVENT...
	.TORNADO 1 ...SWEDESBURG...IA... RATING: EF-0 ESTIMATED PEAK WIND: 75 MPH PATH LENGTH /STATUTE/: 1.9 MILES PATH WIDTH /MAXIMUM/: 25 YARDS FATALITIES: 0 INJURIES: 0 START DATE: JUL 16 2015 START TIME: 507 PM CDT START LOCATION: 2.8 MILES E TRENTON / HENRY / IA START LAT/LON: 41.0649 / -91.5842 END DATE: JUL 16 2015 END TIME: 512 PM CDT END LOCATION: 2.1 MILES S SWEDESBURG / HENRY / IA END LAT/LON: 41.0736 / -91.5507

	.TORNADO 2 ...PORT BYRON...IL... RATING: EF-1 ESTIMATED PEAK WIND: 105 MPH PATH LENGTH /STATUTE/: 1.2 MILES PATH WIDTH /MAXIMUM/: 200 YARDS FATALITIES: 0 INJURIES: 0 START DATE: JULY 16 2015 START TIME: 700 PM CDT START LOCATION: 0.8 NE PORT BYRON / ROCK ISLAND / IL START LAT/LON: 41.6150 / -90.3226 END DATE: JULY 16 2015 END TIME: 710 PM CDT END LOCATION: 2 NE PORT BYRON / ROCK ISLAND / IL END LAT/LON: 41.6252 /-90.3061 DAMAGE PRIMARILY TO LARGE TREES THAT WERE UPROOTED OR HAD SNAPPED TRUNKS. SEVERAL HOUSES WERE DAMAGED WITH PORTIONS OF THEIR ROOF TORN OFF AND DAMAGE TO SIDING.

	.TORNADO 3 ...CAMERON...IL... RATING: EF-2 ESTIMATED PEAK WIND: 125 MPH PATH LENGTH /STATUTE/: 8.2 MILES PATH WIDTH /MAXIMUM/: 700 YARDS FATALITIES: 0 INJURIES: 0 START DATE: JULY 16 2015 START TIME: 713 PM CDT START LOCATION: 1 MILE SE MONMOUTH / WARREN / IL START LAT/LON: 40.8868 / -90.6320 END DATE: JULY 16 2015 END TIME: 734 PM CDT END LOCATION: 2.2 MILES E CAMERON / WARREN / IL END LAT/LON: 40.8924 / -90.4747

	.TORNADO 4 ...GLADSTONE...IL... RATING: EF-1 ESTIMATED PEAK WIND: 95 MPH PATH LENGTH /STATUTE/: 0.84 MILES PATH WIDTH /MAXIMUM/: 100 YARDS FATALITIES: 0 INJURIES: 0 START DATE: JULY 16 2015 START TIME: 604 PM CDT START LOCATION: 2.9 MILES SW GLADSTONE / HENDERSON / IL START LAT/LON: 40.8328 / -90.9995 END DATE: JULY 16 2015 END TIME: 607 PM CDT END LOCATION: 2.4 MILES SW GLADSTONE / HENDERSON / IL END LAT/LON: 40.8414 / -90.9882

	.TORNADO 5 ...KIRKWOOD #1...IL... RATING: EF-2 ESTIMATED PEAK WIND: 120 MPH PATH LENGTH /STATUTE/: 1.7 MILES PATH WIDTH /MAXIMUM/: 300 YARDS FATALITIES: 0 INJURIES: 0 START DATE: JULY 16 2015 START TIME: 709 PM CDT START LOCATION: 2 MILES E KIRKWOOD / WARREN / IL START LAT/LON: 40.8862 / -90.6722 END DATE: JULY 16 2015 END TIME: 713 PM CDT END LOCATION: 2 MILES SW MONMOUTH / WARREN / IL END LAT/LON: 40.8741 / -90.7009

	.TORNADO 6 ...KIRKWOOD #2...IL... RATING: EF-1 ESTIMATED PEAK WIND: 90 MPH PATH LENGTH /STATUTE/: 1.4 MILES PATH WIDTH /MAXIMUM/: 50 YARDS FATALITIES: 0 INJURIES: 0 START DATE: JULY 16 2015 START TIME: 650 PM CDT START LOCATION: 2.5 MILES SW KIRKWOOD / WARREN / IL START LAT/LON: 40.8338 / -90.7720 END DATE: JULY 16 2015 END TIME: 652 PM CDT END LOCATION: 1.5 MILES S KIRKWOOD / WARREN / IL END LAT/LON: 40.8422 / -90.7475

	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 NOTE: THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS STORM DATA.

Rainfall Reports (RTPDVN - LCODVN) - Courtesy of the Iowa Environmental Mesonet (IEM)

Max/Min Temperature and Precipitation Table

CoCoRaHS Precipitation Summary

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Pre-Event Discussions - Courtesy of the Iowa Environmental Mesonet (IEM)

Below are links to the most recent Hazardous Weather Outlook, Area Forecast Discussion, SPC Day 1 Outlook, and
SPC Mesoscale Discussion before the event began.

Hazardous Weather Outlook - 7/16 - 4:32 AM

Area Forecast Discussion - 7/16 - 3:24 PM

Mesoscale Discussion 1439

Day 1 Convective Outlook - 7/16 - 11:24 AM

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Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

July 16th Damage Survey Results & Event Summary