Bay County
Population 102,123 (2025) 442 sq mi
Bay County has recorded 15 tornadoes since 1950, 34th most of 83 counties in Michigan; the most recent was on July 8, 2016.
Hazard fingerprint Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed
- Tornado damage paths since 195015
- Tropical cyclone tracks within 100 miles since 1851, wider where stronger1
- Major flood years since 19784
At a glance
The record for Bay County in eight numbers. Each links to its section below.
Tropical cyclones within 50 mi
1
Most of any of Michigan’s 83 counties
None at hurricane strength since 1851
DetailsStrongest tornado
F3
June 12, 1984, 48.0 mile path
Strongest tropical cyclone
TS
Tropical storm Connie, 1955, 48.5 miles away
Tornadoes
About one every 5.1 years since 1950, one of them rated F3/EF3 or stronger.
Strongest
June 12, 1984
F3, 48.0 mile path
500 yards wide.
Most recent
Friday, July 8, 2016
EF0, 2.0 mile path
10 years ago.
Every recorded tornado
| Jul 8, 2016 | EF0 | 2.0 | 0 | 0 |
| May 31, 2011 | EF1 | 8.4 | 0 | 0 |
| Jun 13, 2004 | F0 | 3.0 | 0 | 0 |
| Aug 4, 2003 | F0 | 0.2 | 0 | 0 |
| Oct 24, 2001 | F1 | 7.0 | 0 | 0 |
| Jun 12, 1984 | F3 | 48.0 | 2 | 0 |
| Jul 17, 1982 | F0 | 0.1 | 0 | 0 |
| Jun 20, 1979 | F0 | 0.8 | 0 | 0 |
| Sep 12, 1974 | F1 | 4.3 | 0 | 0 |
| Jul 14, 1974 | F1 | 0.1 | 0 | 0 |
| Jul 31, 1973 | F2 | 2.3 | 0 | 0 |
| Jun 26, 1973 | F0 | 0.1 | 0 | 0 |
| Jun 26, 1973 | F0 | 0.1 | 0 | 0 |
| Apr 11, 1965 | F2 | 9.9 | 2 | 0 |
| Jun 22, 1957 | F2 | 0.1 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Bay County: 0.
- Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.
Storm Prediction Center severe weather database, 1950 to 2025.
Hurricanes and tropical storms
1 passed within 50 miles since 1851; none at hurricane strength.
Strongest within 50 miles
August 14, 1955
Connie, Tropical storm
48.5 miles at closest approach, winds near 41 mph.
Most recent
September 14, 2008
Ike, Post-tropical
78.5 miles at closest approach.
Every storm within 100 miles
- Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.
National Hurricane Center HURDAT2, 1851 to 2025.
Wildfire and smoke
No large wildfire has been mapped here since satellite mapping began in 1984.
Smoke overhead
Smokiest year
2023: 79 days
Heavy smoke on 21 days in 2023, the most of any year.
Last 10 years
25.9 days a year
Medium or heavy smoke, 2016 to 2025.
2025
29 days
Medium or heavy smoke. 41 so far in 2026.
- A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.
NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.
Floods and flood insurance
515 federal flood insurance claims since 1979, with $2.5 million paid.
Most claims in one year
1986: 205 claims
$815,000 paid.
2nd most
1983: 123 claims
$288,000 paid.
3rd most
2017: 36 claims
$365,000 paid.
Claims by ZIP code
| 48706 | 298 | $1.3 million |
| 48634 | 67 | $200,000 |
| 48631 | 66 | $443,000 |
| 48650 | 32 | $189,000 |
| 48708 | 26 | $121,000 |
| 48732 | 16 | $47,000 |
| 48611 | 5 | $130,000 |
Flood events since 1996
- Flood8
- Lakeshore Flood7
- Flash Flood6
- Heavy Rain1
1 death recorded in flood events since 1996.
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.
River crests
The National Weather Service sets flood stages for 1 gauge here but lists no crests for it.
River gauges
| Saginaw River at Essexville Tidal Gauge | 583.3 | — | 0 |
- Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.
NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.
Drought
In severe drought or worse for 96 of 1,581 months since 1895 (6%); the longest spell lasted 20 months.
96
Months in severe drought or worse since 1895
29
Months in extreme drought
6%
Share of all months, severe or worse
2
Drought reports to the Weather Service since 1996
Lowest reading
April 1931
−5.78, extreme drought
Longest severe spell
20 months
September 1930 to April 1932.
Latest month
September 2026
+0.72, incipient wet spell
Last severe month: May 2021.
- The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.
NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.
Earthquakes
No earthquake of magnitude 2.5 or more is recorded within 50 miles of the county in the USGS catalogue, which begins in 1900.
Severe weather and other events
436 events in the National Weather Service record, 389 of them since 1996.
62
Hail reports, 1 inch or larger
11
Hail, 2 inches or larger
133
Damaging gusts, 58 mph+
67
Winter weather events since 1996
13
Heat events since 1996
15
Cold events since 1996
Largest hail
March 15, 2012
3.00 inches
Strongest measured or estimated gust
September 1, 1960
98 mph
More event types since 1996
| Lightning | 5 | 0 |
| Dust storms and dust devils | 1 | 0 |
| Dense fog and smoke | 1 | 0 |
Costliest events since 1996
- Mar 8, 2017High Wind, Bay$7.0 million
National Weather Service narrative
A non thunderstorm event took place over the state on Wednesday, March 8, 2017, as high winds brought wind gusts in excess of 60 mph! The high winds took out power lines and trees, along with numerous reports of structural damage to buildings. There were also reports of brush fires and tractor-trailers flipped over around the area. Due to the extensive damage, many areas were without power for several days. Approximately 800,000 DTE customers and approximately 300,000 Consumers Energy customers were affected. The highest wind gust reported across Southeast Michigan was 68 mph at both Saginaw and Detroit Metro Airport.
- Jul 27, 2014Hail$3.0 million
National Weather Service narrative
A powerful upper-level low pressure system dropped southward into the Great Lakes on Sunday July 27, sparking a good deal of severe thunderstorms in the warm, moist, and unstable air in advance of the system. Between 2 p.m. and 8 p.m., severe weather affected nearly all of southeast Michigan. The initial storm that affected portions of Midland and Bay counties from around 2:15 to 3:15 p.m. was a prolific hail producer, with hail up to 3 diameter (greater than baseball size) recorded near Midland. Later, another particularly strong storm moved across Oakland County between around 4:30 and 5:15 pm, dropping hail up to 2.50 diameter (tennis ball size) near the Highland/White Lake…
- Jun 22, 2017Flash Flood$3.0 million
National Weather Service narrative
Five to eight inches of rain fell, leading to widespread significant flooding. 145 homes were damaged. 50 roads and bridges damaged or destroyed.
- Jun 21, 1996Flash Flood$2.2 million
- Jul 27, 2014Hail$2.0 million
National Weather Service narrative
A powerful upper-level low pressure system dropped southward into the Great Lakes on Sunday July 27, sparking a good deal of severe thunderstorms in the warm, moist, and unstable air in advance of the system. Between 2 p.m. and 8 p.m., severe weather affected nearly all of southeast Michigan. The initial storm that affected portions of Midland and Bay counties from around 2:15 to 3:15 p.m. was a prolific hail producer, with hail up to 3 diameter (greater than baseball size) recorded near Midland. Later, another particularly strong storm moved across Oakland County between around 4:30 and 5:15 pm, dropping hail up to 2.50 diameter (tennis ball size) near the Highland/White Lake…
- Jul 27, 2014Hail$2.0 million
National Weather Service narrative
A powerful upper-level low pressure system dropped southward into the Great Lakes on Sunday July 27, sparking a good deal of severe thunderstorms in the warm, moist, and unstable air in advance of the system. Between 2 p.m. and 8 p.m., severe weather affected nearly all of southeast Michigan. The initial storm that affected portions of Midland and Bay counties from around 2:15 to 3:15 p.m. was a prolific hail producer, with hail up to 3 diameter (greater than baseball size) recorded near Midland. Later, another particularly strong storm moved across Oakland County between around 4:30 and 5:15 pm, dropping hail up to 2.50 diameter (tennis ball size) near the Highland/White Lake…
- Jul 27, 2014Hail$2.0 million
National Weather Service narrative
A powerful upper-level low pressure system dropped southward into the Great Lakes on Sunday July 27, sparking a good deal of severe thunderstorms in the warm, moist, and unstable air in advance of the system. Between 2 p.m. and 8 p.m., severe weather affected nearly all of southeast Michigan. The initial storm that affected portions of Midland and Bay counties from around 2:15 to 3:15 p.m. was a prolific hail producer, with hail up to 3 diameter (greater than baseball size) recorded near Midland. Later, another particularly strong storm moved across Oakland County between around 4:30 and 5:15 pm, dropping hail up to 2.50 diameter (tennis ball size) near the Highland/White Lake…
- Apr 15, 2018Lakeshore Flood, Bay$2.0 million
National Weather Service narrative
Lake shore flooding was reported in Bangor Township, with water reaching some homes.
- Jul 27, 2014Hail$2.0 million
National Weather Service narrative
A powerful upper-level low pressure system dropped southward into the Great Lakes on Sunday July 27, sparking a good deal of severe thunderstorms in the warm, moist, and unstable air in advance of the system. Between 2 p.m. and 8 p.m., severe weather affected nearly all of southeast Michigan. The initial storm that affected portions of Midland and Bay counties from around 2:15 to 3:15 p.m. was a prolific hail producer, with hail up to 3 diameter (greater than baseball size) recorded near Midland. Later, another particularly strong storm moved across Oakland County between around 4:30 and 5:15 pm, dropping hail up to 2.50 diameter (tennis ball size) near the Highland/White Lake…
- May 18, 2020Lakeshore Flood, Bay$2.0 million
National Weather Service narrative
The water level at Essexville peaked at 70.60 above LWD at 1542 LST.
- Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.
NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.
Weather records
From Saginaw Mbs International Airport, 10.4 miles from the county’s population centre, with records from 1898.
- All-time high
- 111°FJul 13, 1936
- All-time low
- −23°FFeb 5, 1918
- Warmest night
- 81°FJul 11, 1911
- Coldest day
- −4°FJan 18, 1994
- Wettest day
- 6.93 inAug 10, 2012
- Snowiest day
- 21.3 inMar 17, 1973
- Hottest year
- 2024mean 51.9°F
- Coldest year
- 1917mean 43.1°F
- Wettest year
- 192843.36 in
- Driest year
- 193417.56 in
- Snowiest season
- 87.2 in1966-67
Median first snow
November 17
Earliest: October 12, 2006
Median last snow
April 7
Latest: May 20, 2002
0 of 115 winters had no measurable snow.
Station Saginaw Mbs International Airport (USW00014845), 662 ft elevation, 10.4 miles from the population centre. Daily records from 1898 to October 26, 2026; 100.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.
NOAA NCEI Global Historical Climatology Network Daily.
Federal disaster declarations
14 since 1953. The most recent: Covid-19 Pandemic, March 27, 2020.
| Mar 27, 2020 | Biological | DR-4494-MI |
| Mar 13, 2020 | Biological | EM-3455-MI |
| Aug 2, 2017 | Severe Storm | DR-4326-MI |
| Sep 7, 2005 | Hurricane | EM-3225-MI |
| Jan 10, 2001 | Snowstorm | EM-3160-MI |
| Jun 24, 1998 | Severe Storm | DR-1226-MI |
| Jul 23, 1996 | Severe Storm | DR-1128-MI |
| Sep 18, 1986 | Flood | DR-774-MI |
| Sep 18, 1985 | Flood | DR-744-MI |
| Jan 27, 1978 | Snowstorm | EM-3057-MI |
| Mar 19, 1976 | Severe Storm | DR-495-MI |
| Apr 12, 1973 | Flood | DR-371-MI |
| Dec 1, 1972 | Flood | DR-363-MI |
| Apr 14, 1965 | Tornado | DR-190-MI |
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.
How this compares
Where Bay County stands among 83 counties in Michigan and 3,143 in the United States.
| Tornadoes since 1950 | 15 | 34 / 83 |
| Tornadoes rated F3/EF3 or stronger | 1 | 28 / 83 |
| Tropical cyclones within 50 mi | 1 | 1 / 83 |
| Hurricane-strength passes within 50 mi | 0 | — |
| Wildfire acres since 1984 | 0 | — |
| Flood insurance claims | 515 | 9 / 83 |
| Flood insurance paid | $2.5 million | 15 / 83 |
| Disaster declarations | 14 | 8 / 83 |
| Flood events since 1996 | 22 | 21 / 83 |
| Hail and wind events since 1996 | 263 | 18 / 83 |
| Winter storm events since 1996 | 67 | 64 / 83 |
| Reported damage since 1996 | $50.7 million | 23 / 83 |
| River crests at major flood stage | 0 | — |
| High tide flooding days a year, last 10 years | 0.0 | — |
| Months in severe drought since 1895 | 96 | 71 / 83 |
| Medium or heavy smoke days a year, last 10 years | 25.9 | 42 / 83 |
| Earthquakes M4+ within 50 mi since 1900 | 0 | — |
| Earthquakes M2.5+ in the county since 1973 | 0 | — |
Neighbouring counties
| Arenac County | 9 | 1 |
| Gladwin County | 10 | 1 |
| Midland County | 10 | 0 |
| Saginaw County | 27 | 0 |
| Tuscola County | 23 | 1 |
Sources and vintage
Every number on this page comes from these public records.
- Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
- Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
- Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
- Storm events NOAA NCEI Storm Events Database, through 2026.
- Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
- Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
- Weather records NOAA NCEI Global Historical Climatology Network Daily, station USW00014845.
- River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
- Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
- Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
- Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.
Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.