Weather Warnings for Ohio

Issued by the National Weather Service

Current watches, warnings, and advisories for Ohio
Alerts Updated: April 18, 2026, 8:10 pm  UTC


Flood Warning issued April 18 at 4:09PM EDT until April 20 at 11:00AM EDT by NWS Northern Indiana

Summary: ...The Flood Warning continues for the following rivers in Indiana... Ohio...Michigan... Saint Joseph River Ohio near Newville affecting Defiance, De Kalb and Allen IN Counties. Saint Joseph River Ohio below Montpelier affecting Williams County. Tiffin River at Stryker affecting Defiance, Fulton OH and Williams Counties. Tippecanoe River near Ora affecting Pulaski County. Tippecanoe River above Winamac affecting White, Carroll and Pulaski Counties. Saint Joseph River Michigan at Niles affecting Cass MI, St. Joseph and Berrien Counties. Saint Joseph River Michigan at South Bend affecting St. Joseph, Elkhart and Berrien Counties. Saint Joseph River Michigan at Three Rivers affecting Branch, Elkhart and St. Joseph MI Counties. North Branch Elkhart River at Cosperville affecting Noble County. For the Tippecanoe River...including Ora, Winamac, Norway Dam... Minor flooding is forecast. For the Saint Joseph River Ohio...including Montpelier, Newville, St. Joe River Ft. Wayne...Minor flooding is forecast. For the Tiffin River...including Stryker...Minor flooding is forecast. For the Saint Joseph River Michigan...including Three Rivers, Mottville, Elkhart IN, South Bend, Niles...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Saint Joseph River Ohio below Montpelier. * WHEN...Until late Monday morning. * IMPACTS...At 13.0 feet, County Road K, one mile southwest of Montpelier begins to flood. Some flooding begins to affect the village of Pioneer. Significant low land and agricultural flooding occurs near the river. * ADDITIONAL DETAILS... - At 2:30 PM EDT Saturday the stage was 12.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 2:30 PM EDT Saturday was 12.6 feet. - Forecast...The river is expected to fall below flood stage late tomorrow morning and continue falling to 7.9 feet early Thursday afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 18, 2026, 4:09 pm      Expires:  April 19, 2026, 10:15 am
Area:  Williams, OH


Flood Warning issued April 18 at 4:09PM EDT until April 23 at 2:00PM EDT by NWS Northern Indiana

Summary: ...The Flood Warning continues for the following rivers in Indiana... Ohio...Michigan... Saint Joseph River Ohio near Newville affecting Defiance, De Kalb and Allen IN Counties. Saint Joseph River Ohio below Montpelier affecting Williams County. Tiffin River at Stryker affecting Defiance, Fulton OH and Williams Counties. Tippecanoe River near Ora affecting Pulaski County. Tippecanoe River above Winamac affecting White, Carroll and Pulaski Counties. Saint Joseph River Michigan at Niles affecting Cass MI, St. Joseph and Berrien Counties. Saint Joseph River Michigan at South Bend affecting St. Joseph, Elkhart and Berrien Counties. Saint Joseph River Michigan at Three Rivers affecting Branch, Elkhart and St. Joseph MI Counties. North Branch Elkhart River at Cosperville affecting Noble County. For the Tippecanoe River...including Ora, Winamac, Norway Dam... Minor flooding is forecast. For the Saint Joseph River Ohio...including Montpelier, Newville, St. Joe River Ft. Wayne...Minor flooding is forecast. For the Tiffin River...including Stryker...Minor flooding is forecast. For the Saint Joseph River Michigan...including Three Rivers, Mottville, Elkhart IN, South Bend, Niles...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Saint Joseph River Ohio near Newville. * WHEN...Until early Thursday afternoon. * IMPACTS...At 14.0 feet, Significant flooding occurs on DeKalb County Road 42 about 3 miles northeast of Newville. Considerable agricultural and low land flooding occurs along the St. Joseph River to the Cedarville Reservoir. * ADDITIONAL DETAILS... - At 3:40 PM EDT Saturday the stage was 12.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:40 PM EDT Saturday was 12.9 feet. - Forecast...The river is expected to rise to a crest of 13.2 feet tomorrow evening. It will then fall below flood stage early Wednesday afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 18, 2026, 4:09 pm      Expires:  April 19, 2026, 10:15 am
Area:  Allen, IN; De Kalb, IN; Defiance, OH


Flood Warning issued April 18 at 4:09PM EDT until April 24 at 2:00AM EDT by NWS Northern Indiana

Summary: ...The Flood Warning continues for the following rivers in Indiana... Ohio...Michigan... Saint Joseph River Ohio near Newville affecting Defiance, De Kalb and Allen IN Counties. Saint Joseph River Ohio below Montpelier affecting Williams County. Tiffin River at Stryker affecting Defiance, Fulton OH and Williams Counties. Tippecanoe River near Ora affecting Pulaski County. Tippecanoe River above Winamac affecting White, Carroll and Pulaski Counties. Saint Joseph River Michigan at Niles affecting Cass MI, St. Joseph and Berrien Counties. Saint Joseph River Michigan at South Bend affecting St. Joseph, Elkhart and Berrien Counties. Saint Joseph River Michigan at Three Rivers affecting Branch, Elkhart and St. Joseph MI Counties. North Branch Elkhart River at Cosperville affecting Noble County. For the Tippecanoe River...including Ora, Winamac, Norway Dam... Minor flooding is forecast. For the Saint Joseph River Ohio...including Montpelier, Newville, St. Joe River Ft. Wayne...Minor flooding is forecast. For the Tiffin River...including Stryker...Minor flooding is forecast. For the Saint Joseph River Michigan...including Three Rivers, Mottville, Elkhart IN, South Bend, Niles...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Tiffin River at Stryker. * WHEN...Until early Friday morning. * IMPACTS...At 13.0 feet, Flood waters begin to affect some farm buildings near Stryker and flood some secondary roads. * ADDITIONAL DETAILS... - At 3:15 PM EDT Friday, April 17 the stage was 12.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:15 PM EDT Friday was -9999.0 feet. - Forecast...The river is expected to rise to a crest of 13.3 feet this evening. It will then fall below flood stage early Thursday morning. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  April 18, 2026, 4:09 pm      Expires:  April 19, 2026, 10:15 am
Area:  Defiance, OH; Fulton, OH; Williams, OH


Frost Advisory issued April 18 at 3:51PM EDT until April 19 at 9:00AM EDT by NWS Wilmington OH

Summary: * WHAT...For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 30 possible. * WHERE...In Indiana, Wayne County. In Ohio, Auglaize, Darke, Mercer, Miami, Preble, and Shelby Counties. * WHEN...For the Frost Advisory, from 2 AM to 9 AM EDT Sunday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Severity:  Minor    Effective:  April 18, 2026, 3:51 pm      Expires:  April 19, 2026, 12:00 am
Area:  Wayne; Mercer; Auglaize; Darke; Shelby; Miami; Preble


Frost Advisory issued April 18 at 3:51PM EDT until April 19 at 9:00AM EDT by NWS Wilmington OH

Summary: * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Indiana, Fayette, Union, Dearborn, Franklin, and Ripley Counties. In Ohio, Butler and Montgomery Counties. * WHEN...From 2 AM to 9 AM EDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Severity:  Minor    Effective:  April 18, 2026, 3:51 pm      Expires:  April 19, 2026, 12:00 am
Area:  Fayette; Union; Franklin; Ripley; Dearborn; Montgomery; Butler


Freeze Watch issued April 18 at 3:51PM EDT until April 20 at 9:00AM EDT by NWS Wilmington OH

Summary: * WHAT...Sub-freezing temperatures as low as 30 possible. * WHERE...Delaware, Fairfield, Licking, Madison, Union, Champaign, Clark, Hardin, and Logan Counties. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Severity:  Severe    Effective:  April 18, 2026, 3:51 pm      Expires:  April 19, 2026, 12:00 am
Area:  Hardin; Logan; Union; Delaware; Champaign; Clark; Madison; Licking; Fairfield


Freeze Watch issued April 18 at 3:51PM EDT until April 20 at 9:00AM EDT by NWS Wilmington OH

Summary: * WHAT...For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 30 possible. * WHERE...In Indiana, Wayne County. In Ohio, Auglaize, Darke, Mercer, Miami, Preble, and Shelby Counties. * WHEN...For the Frost Advisory, from 2 AM to 9 AM EDT Sunday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Severity:  Severe    Effective:  April 18, 2026, 3:51 pm      Expires:  April 19, 2026, 12:00 am
Area:  Wayne; Mercer; Auglaize; Darke; Shelby; Miami; Preble


Frost Advisory issued April 18 at 1:56PM EDT until April 19 at 9:00AM EDT by NWS Northern Indiana

Summary: * WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 25 possible. * WHERE...Portions of northern Indiana, southwest Michigan, and northwest Ohio. * WHEN...For the Frost Advisory, from midnight EDT /11 PM CDT/ tonight to 9 AM EDT /8 AM CDT/ Sunday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Severity:  Minor    Effective:  April 18, 2026, 1:56 pm      Expires:  April 19, 2026, 2:00 am
Area:  Elkhart; Lagrange; Steuben; Noble; De Kalb; Starke; Pulaski; Marshall; Fulton; Whitley; Allen; White; Cass; Miami; Wabash; Huntington; Wells; Adams; Grant; Blackford; Jay; Northern La Porte; Eastern St. Joseph; Northern Kosciusko; Southern La Porte; Western St. Joseph; Southern Kosciusko; Cass; St. Joseph; Branch; Hillsdale; Northern Berrien; Southern Berrien; Williams; Fulton; Defiance; Henry; Paulding; Putnam; Van Wert; Allen


Freeze Watch issued April 18 at 1:56PM EDT until April 20 at 11:00AM EDT by NWS Northern Indiana

Summary: * WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 25 possible. * WHERE...Portions of northern Indiana, southwest Michigan, and northwest Ohio. * WHEN...For the Frost Advisory, from midnight EDT /11 PM CDT/ tonight to 9 AM EDT /8 AM CDT/ Sunday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Severity:  Severe    Effective:  April 18, 2026, 1:56 pm      Expires:  April 19, 2026, 2:00 am
Area:  Elkhart; Lagrange; Steuben; Noble; De Kalb; Starke; Pulaski; Marshall; Fulton; Whitley; Allen; White; Cass; Miami; Wabash; Huntington; Wells; Adams; Grant; Blackford; Jay; Northern La Porte; Eastern St. Joseph; Northern Kosciusko; Southern La Porte; Western St. Joseph; Southern Kosciusko; Cass; St. Joseph; Branch; Hillsdale; Northern Berrien; Southern Berrien; Williams; Fulton; Defiance; Henry; Paulding; Putnam; Van Wert; Allen


Frost Advisory issued April 18 at 1:29PM EDT until April 19 at 10:00AM EDT by NWS Cleveland OH

Summary: * WHAT...For the Frost Advisory, temperatures as cold as 34 degrees will result in frost formation. For the Freeze Watch, sub-freezing temperatures as cold as the upper 20's are possible. * WHERE...Lucas and Wood Counties. * WHEN...For the Frost Advisory, from 2 AM to 10 AM EDT Sunday. For the Freeze Watch, from Sunday evening through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...The coldest low temperatures and greatest potential for frost formation Sunday morning are expected in far-northern Wood County and the western two-thirds of Lucas County.
Severity:  Minor    Effective:  April 18, 2026, 1:29 pm      Expires:  April 19, 2026, 12:00 am
Area:  Lucas; Wood


Freeze Watch issued April 18 at 1:29PM EDT until April 20 at 11:00AM EDT by NWS Cleveland OH

Summary: * WHAT...Sub-freezing temperatures in the lower 20's to lower 30's are possible. * WHERE...Portions of north-central, northeast, and northwest Ohio and northwest Pennsylvania. * WHEN...From Sunday evening through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Severity:  Severe    Effective:  April 18, 2026, 1:29 pm      Expires:  April 19, 2026, 12:00 am
Area:  Ottawa; Sandusky; Erie; Lorain; Cuyahoga; Lake; Geauga; Ashtabula Inland; Hancock; Seneca; Huron; Medina; Summit; Portage; Trumbull; Wyandot; Crawford; Richland; Ashland; Wayne; Stark; Mahoning; Marion; Morrow; Holmes; Knox; Ashtabula Lakeshore; Northern Erie; Southern Erie; Crawford


Freeze Watch issued April 18 at 1:29PM EDT until April 20 at 11:00AM EDT by NWS Cleveland OH

Summary: * WHAT...For the Frost Advisory, temperatures as cold as 34 degrees will result in frost formation. For the Freeze Watch, sub-freezing temperatures as cold as the upper 20's are possible. * WHERE...Lucas and Wood Counties. * WHEN...For the Frost Advisory, from 2 AM to 10 AM EDT Sunday. For the Freeze Watch, from Sunday evening through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...The coldest low temperatures and greatest potential for frost formation Sunday morning are expected in far-northern Wood County and the western two-thirds of Lucas County.
Severity:  Severe    Effective:  April 18, 2026, 1:29 pm      Expires:  April 19, 2026, 12:00 am
Area:  Lucas; Wood


Freeze Watch issued April 18 at 12:56PM EDT until April 20 at 9:00AM EDT by NWS Pittsburgh PA

Summary: * WHAT...Sub-freezing temperatures as low as 29 possible. * WHERE...Portions of east central Ohio, northwest, southwest, and western Pennsylvania, and northern West Virginia. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Another higher threat for sub-freezing temperatures is expected Monday night with additional headlines very likely.
Severity:  Severe    Effective:  April 18, 2026, 12:56 pm      Expires:  April 18, 2026, 10:00 pm
Area:  Tuscarawas; Carroll; Columbiana; Coshocton; Harrison; Jefferson; Muskingum; Guernsey; Mercer; Venango; Forest; Lawrence; Butler; Clarion; Jefferson; Beaver; Armstrong; Westmoreland Ridges; Fayette Ridges; Indiana; Higher Elevations of Indiana; Hancock; Ridges of Eastern Monongalia and Northwestern Preston; Preston; Eastern Preston; Western Tucker; Eastern Tucker