097
WGUS63 KGRR 151817
FFAGRR
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
217 PM EDT WED APR 15 2026
MIZ043-162030-
/O.NEW.KGRR.FF.A.0001.260415T1817Z-260416T1200Z/
/00000.0.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
/O.CON.KGRR.FA.A.0002.000000T0000Z-260417T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OCEANA-
INCLUDING THE CITIES OF HART
217 PM EDT WED APR 15 2026
...FLASH FLOOD WATCH FOR THE POTENTIAL FAILURE OF HESPERIA DAM ON
THE WHITE RIVER IN EFFECT THROUGH THURSDAY MORNING...
* WHAT...FLASH FLOODING CAUSED BY A POTENTIAL DAM FAILURE IS
POSSIBLE AT THE HESPERIA DAM.
* WHERE...A PORTION OF WEST CENTRAL MICHIGAN, INCLUDING THE
FOLLOWING COUNTY, OCEANA.
* WHEN...THROUGH THURSDAY MORNING.
* IMPACTS...DAM FAILURE MAY RESULT IN FLASH FLOODING OF LOW-LYING
AREAS BELOW THE DAM.
* ADDITIONAL DETAILS...
- LOCAL OFFICIALS AND EMERGENCY MANAGEMENT REPORT WATER
CONTINUES TO RISE RAPIDLY ON THE WHITE RIVER IN HESPERIA.
WATER IS CURRENTLY FLOWING OVER THE SPILLWAY OF THE HESPERIA
DAM, AND MAY SOON BEGIN OVERTOPPING THE DAM ITSELF. WATER IS
ALREADY IMPACTING THE STRUCTURE OF THE DIVISON STREET BRIDGE
UPSTREAM OF THE DAM.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
DAM SAFETY EXPERTS WITH STATE AND LOCAL EMERGENCY SERVICES ARE
MONITORING THE DAM AND WILL ISSUE A PUBLIC STATEMENT AS CONDITIONS
WARRANT. PLAN NOW SO YOU WILL KNOW WHAT TO DO IN AN EMERGENCY. KEEP
INFORMED BY LISTENING TO LOCAL RADIO AND TELEVISION FOR STATEMENTS
AND POSSIBLE WARNINGS. FOLLOW THE ADVICE OF PUBLIC SAFETY OFFICIALS.
..FLOOD WATCH REMAINS IN EFFECT THROUGH LATE THURSDAY NIGHT
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...A PORTION OF WEST CENTRAL MICHIGAN, INCLUDING THE
FOLLOWING COUNTY, OCEANA.
* WHEN...THROUGH LATE THURSDAY NIGHT.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS.
* ADDITIONAL DETAILS...
- ADDITIONAL RAIN EXPECTED TONIGHT MAY CONTINUE TO INCREASE
EXPECTED FLOODS ON AREA RIVERS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD
WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED
TO TAKE ACTION SHOULD FLOODING DEVELOP.
MIZ037>040-044>046-050>052-162030-
/O.CON.KGRR.FA.A.0002.000000T0000Z-260417T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MASON-LAKE-OSCEOLA-CLARE-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-
INCLUDING THE CITIES OF LUDINGTON, BIG RAPIDS, BALDWIN, REED
CITY, MOUNT PLEASANT, MUSKEGON, FREMONT, CLARE, ALMA, AND
GREENVILLE
217 PM EDT WED APR 15 2026
..FLOOD WATCH REMAINS IN EFFECT THROUGH LATE THURSDAY NIGHT
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...PORTIONS OF CENTRAL AND WEST CENTRAL MICHIGAN, INCLUDING
THE FOLLOWING COUNTIES, IN CENTRAL MICHIGAN, CLARE, GRATIOT,
ISABELLA, MECOSTA, MONTCALM AND OSCEOLA. IN WEST CENTRAL MICHIGAN,
LAKE, MASON, MUSKEGON AND NEWAYGO.
* WHEN...THROUGH LATE THURSDAY NIGHT.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS.
* ADDITIONAL DETAILS...
- ADDITIONAL RAIN EXPECTED TONIGHT MAY CONTINUE TO INCREASE
EXPECTED FLOODS ON AREA RIVERS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD
WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED
TO TAKE ACTION SHOULD FLOODING DEVELOP.
MIZ056>059-064>067-071>074-162030-
/O.CON.KGRR.FA.A.0002.000000T0000Z-260417T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-INGHAM-VAN BUREN-
KALAMAZOO-CALHOUN-JACKSON-
INCLUDING THE CITIES OF JENISON, KALAMAZOO, HOLLAND, GRAND HAVEN,
CHARLOTTE, SOUTH HAVEN, LANSING, GRAND RAPIDS, JACKSON, HASTINGS,
IONIA, BATTLE CREEK, AND ST. JOHNS
217 PM EDT WED APR 15 2026
..FLOOD WATCH REMAINS IN EFFECT THROUGH LATE THURSDAY NIGHT
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...PORTIONS OF SOUTH CENTRAL AND SOUTHWEST MICHIGAN,
INCLUDING THE FOLLOWING COUNTIES, IN SOUTH CENTRAL MICHIGAN,
CALHOUN, CLINTON, EATON, INGHAM, IONIA AND JACKSON. IN SOUTHWEST
MICHIGAN, ALLEGAN, BARRY, KALAMAZOO, KENT, OTTAWA AND VAN BUREN.
* WHEN...THROUGH LATE THURSDAY NIGHT.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS.
* ADDITIONAL DETAILS...
- ADDITIONAL RAIN EXPECTED TONIGHT MAY CONTINUE TO INCREASE
EXPECTED FLOODS ON AREA RIVERS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD
WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED
TO TAKE ACTION SHOULD FLOODING DEVELOP.
AMD
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