Rock Island County Hazard Profiles

Hazard	Days with reports, 1996–2025	Years with at least one	Deaths*	Injuries*	Property damage entered*
Thunderstorm wind	104	27/30	0	7	$1.4M
Hail	59	27/30	0	0	$562K
Tornado	17	11/30	0	15	$5.8M
Flooding	98	24/30	2	0	$4.2M
Winter storms	152	30/30	1	21	$6K
Lightning	8	6/30	2	1	$64K
High wind (no storm)	17	13/30	0	1	$267K

Year	Thunderstorm wind	Hail	Tornado	Flooding	Winter storms	Lightning	High wind (no storm)
1996	1	0	0	0	4	1	1
1997	3	1	1	2	8	0	2
1998	3	2	0	2	2	0	1
1999	3	2	0	3	8	2	0
2000	2	3	0	4	13	0	0
2001	5	1	0	7	7	1	2
2002	1	2	0	1	2	0	1
2003	3	2	0	4	2	0	1
2004	0	2	0	3	1	1	0
2005	2	0	0	0	1	0	0
2006	2	4	1	4	2	1	0
2007	6	2	0	3	14	0	0
2008	4	2	1	8	17	0	1
2009	3	2	0	6	4	0	0
2010	6	3	0	6	11	2	0
2011	4	4	0	3	3	0	0
2012	3	1	0	0	4	0	0
2013	2	5	1	6	8	0	1
2014	0	3	0	3	7	0	0
2015	2	1	4	1	5	0	0
2016	4	1	2	0	1	0	2
2017	5	2	1	2	2	0	0
2018	3	2	0	6	3	0	0
2019	4	1	0	15	6	0	2
2020	6	2	1	3	3	0	0
2021	0	1	0	0	6	0	1
2022	6	2	0	0	3	0	1
2023	5	2	1	2	1	0	0
2024	8	4	2	2	3	0	1
2025	8	0	2	2	1	0	0

	J	F	M	A	M	J	J	A	S	O	N	D
Thunderstorm wind			8	4	13	36	22	12	6	1	2
Hail		3	5	16	14	13	2	4	1		1
Tornado			1	3	3	3	3			1	2	1
Flooding	1	6	7	15	15	14	23	6	4	7
Winter storms	45	29	15	4						1	8	50
Lightning						6		2
High wind (no storm)		4	2	4	1				1	2	1	2

Hazard profiles

Each profile answers FEMA's questions for hazard identification: what it is, where, how bad (extent), what has happened, and how likely it is to happen again.

Tornado

Description: A violently rotating column of air in contact with the ground, rated after the fact on the Fujita scale (through January 2007) or the Enhanced Fujita scale, EF0 to EF5, by the damage it leaves.
Location: Countywide; tornado reports name 14 communities, most often Illinois City, Edgington and Taylor Ridge.
Extent: The strongest on record is the F3 of March 13, 1990 (1 injury). Tornadoes rated F2/EF2 or stronger touched down on 3 separate days.
Previous occurrences: 31 tornadoes on 22 days from 1981 to 2025. The busiest day was June 3, 2025, with 4. Weather Service survey, June 3, 2025: "This longer lived EF1 tornado, with maximum winds of 100 mph, tracked from southwest of Coyne Center into the southern Quad Cities metro area ending near the Avenue of the Cities in Moline. This tornado did heavy tree damage near and in a mobile home park in Coyne Center, …"
Probability: At least one tornado in 11 of 30 years (37%) from 1996 to 2025.
Recorded losses: 0 deaths, 15 injuries, $5.8M in property damage as entered by the Weather Service (11 of 31 reports carry a dollar figure).

Severe thunderstorm wind

Description: Straight-line winds from thunderstorms, including downbursts, measured or estimated at 58 mph (50 knots) or more.
Location: Countywide; reports name 28 communities, most often Quad City, Moline and Port Byron.
Extent: The highest gust on record is 93 knots (107 mph), measured near Quad City on March 12, 2006. 43 reports reached 65 knots (75 mph) or more.
Previous occurrences: 244 reports on 139 days since 1980. March 12, 2006: "Measured gust from KMLI ASOS that was confirmed by FAA backup equipment. A Hampton Inn under construction on the northeast side of the airport was demolished and a nearby interstate highway sign was blown over.NWS survey concluded a …"
Probability: Reports in 27 of 30 years (90%) from 1996 to 2025; about 3.5 damaging-wind days a year.
Recorded losses: 0 deaths, 7 injuries, $1.4M in property damage as entered by the Weather Service (39 of 244 reports carry a dollar figure).

Hail

Description: Ice stones from thunderstorm updrafts; reported at 3/4 inch and larger in this record.
Location: Countywide; reports name 30 communities, most often Moline, Coal Vly and Rock Is.
Extent: Largest: 3 inches near Illinois City on June 8, 2018. 6 reports of 2 inches or more.
Previous occurrences: 128 reports on 71 days since 1980.
Probability: Reports in 27 of 30 years (90%) from 1996 to 2025.
Recorded losses: 0 deaths, 0 injuries, $562K in property damage as entered by the Weather Service (7 of 128 reports carry a dollar figure).

Flooding (river, flash and heavy rain)

Description: River flooding, and flash flooding when heavy rain overwhelms streets, ditches and small streams.
Location: Countywide; reports name 23 communities, most often Rock Is, Illinois City and Moline.
Extent: The deadliest flood on record was April 3, 1999 (1 death). The costliest entry is May 21, 2003, at $1.0M in property damage.
Previous occurrences: 134 flood, flash-flood and heavy-rain reports since 1997. June 17, 2026: "Law Enforcement reported that 77th St West was closed due to flooding. The time of the report was estimated based on radar."
Probability: Reports in 24 of 30 years (80%) from 1996 to 2025.
Recorded losses: 2 deaths, 0 injuries, $4.2M in property damage as entered by the Weather Service (25 of 134 reports carry a dollar figure).

Winter storms and ice

Description: Heavy snow, blizzards, ice storms, sleet and lesser winter weather, recorded by forecast zone rather than by point.
Location: Countywide (forecast-zone records).
Extent: Ice storms on 9 occasions. Zone records rarely give snow or ice totals; the full plan adds station data.
Previous occurrences: 154 zone events from 1996 to 2026: 63 winter storm, 61 winter weather, 15 heavy snow, 9 ice storm, 5 blizzard, 1 sleet.
Probability: Events in 30 of 30 years (100%) from 1996 to 2025.
Recorded losses: 1 death, 21 injuries, $6K in property damage as entered by the Weather Service (2 of 154 reports carry a dollar figure).

Lightning

Description: Cloud-to-ground strikes that injure people, start fires or damage property. Only damaging strikes are recorded.
Location: Countywide; reports name 4 communities, most often Moline, Rock Is and Milan.
Extent: 2 deaths and 1 injury on record.
Previous occurrences: 8 damaging strikes since 1996.
Probability: Damaging strikes in 6 of 30 years (20%) from 1996 to 2025.
Recorded losses: 2 deaths, 1 injury, $64K in property damage as entered by the Weather Service (5 of 8 reports carry a dollar figure).

High wind (not from thunderstorms)

Description: Strong winds from large storm systems rather than thunderstorms, recorded by forecast zone.
Location: Countywide (forecast-zone records).
Extent: Highest: 54 knots (62 mph).
Previous occurrences: 17 zone events since 1996.
Probability: Events in 13 of 30 years (43%) from 1996 to 2025.
Recorded losses: 0 deaths, 1 injury, $267K in property damage as entered by the Weather Service (3 of 17 reports carry a dollar figure).

Not covered by this record

Extreme heat, extreme cold, drought, earthquake and dam failure are not in the storm archive this chapter draws on. The full chapter profiles them from NOAA climate records, the U.S. Drought Monitor, USGS shaking maps and the state dam inventory, and the planning team decides which belong in the plan.

Rock Island County, Illinois
Hazard Profiles

At a glance

How often, year by year

When in the year

Tornado tracks, 1981–2025

Hazard profiles

Tornado

Severe thunderstorm wind

Hail

Flooding (river, flash and heavy rain)

Winter storms and ice

Lightning

High wind (not from thunderstorms)

Not covered by this record

Previous occurrences by community

What this draft covers, and what the full update adds

Covered here

Added in the full update

Data notes

Nearest community named in the report	Thunderstorm wind	Hail	Flooding	Tornado	Lightning	All
Moline	31	16	18		3	68
Rock Is	10	9	26		2	47
Illinois City	10	7	18	4		39
Quad City	32	2	2			36
Blackhawk State Park	13	9	4	1		27
Andalusia	9	8	5	3		25
Milan	6	7	9		2	24
Coal Vly	10	11	2	1		24
Port Byron	16	2	3	1		22
Carbon Cliff	8	2	6			16
East Moline	5	6	2	1		14
Cordova	6	3	3	2		14
Silvis Hgts	6	4	4			14
Reynolds	8	2		2		12
Fruitland	5	4	1	1		11
Joslin	2	2	6			10
Taylor Ridge	3	4		3		10
Silvis	5	3				8