Alert archive / Michigan / Flood Watches in 2021
Flood Watch 2, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flood watch at Sep 21, 2021, 4:09 AM EDT for 5 counties in Michigan. It took effect at Sep 21, 2021, 2:00 PM EDT. It was in force for 38 hr.
The area
The counties it named.
The facts
- Issued
- Sep 21, 2021, 4:09 AM EDT (08:09 UTC)
- In effect from
- Sep 21, 2021, 2:00 PM EDT
- Expired
- Sep 23, 2021, 3:52 AM EDT
- In force
- 38 hr
- Issued by
- NWS Grand Rapids, MI
- Flood severity
- None
Counties Calhoun County, MI, Clinton County, MI, Eaton County, MI, Ingham County, MI, Jackson County, MI
The radar
The Grand Rapids radar (KGRR), 84 km from the middle of the area, began a volume at 08:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 8.2 hours before the alert went out and 102 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 234 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 716 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
085 WGUS63 KGRR 210809 FFAGRR URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Grand Rapids MI 409 AM EDT Tue Sep 21 2021 MIZ059-066-067-073-074-211615- /O.NEW.KGRR.FA.A.0002.210921T1800Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of St. Johns, Charlotte, Lansing, Battle Creek, and Jackson 409 AM EDT Tue Sep 21 2021 ...FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THURSDAY MORNING... The National Weather Service in Grand Rapids has issued a * Flood Watch for a portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham, and Jackson. * From 2 PM EDT this afternoon through Thursday morning * Periods of moderate to heavy rain are expected from this afternoon through Thursday morning. Rainfall amounts in some areas may exceed 4 inches. Despite rather dry conditions of late the potential for this magnitude of rainfall over about 36 hours may lead to areal flooding and flooding of smaller creeks and streams. * The potential exists for small stream and creek flooding as well as flooding of low spots where water may cover some roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. 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. Weather Preparedness Information is available on line at www.ready.gov/floods. && $$ DUKE
6 follow-up statements
373 WGUS63 KGRR 211503 FFAGRR Flood Watch National Weather Service Grand Rapids MI 1103 AM EDT Tue Sep 21 2021 MIZ059-066-067-073-074-212315- /O.CON.KGRR.FA.A.0002.210921T1800Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of St. Johns, Charlotte, Lansing, Battle Creek, and Jackson 1103 AM EDT Tue Sep 21 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THURSDAY MORNING... The Flood Watch continues for * A portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham, and Jackson. * From 2 PM EDT this afternoon through Thursday morning * Heavy rain is expected from this afternoon through Thursday morning. Rainfall amounts over 4 inches are possible, which would lead to areal flooding and flooding of some rivers and tributaries. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Weather Preparedness Information is available on line at www.ready.gov/floods. && $$
563 WGUS63 KGRR 220044 FFAGRR Flood Watch National Weather Service Grand Rapids MI 844 PM EDT Tue Sep 21 2021 MIZ059-066-067-073-074-221200- /O.CON.KGRR.FA.A.0002.000000T0000Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of Charlotte, St. Johns, Jackson, Battle Creek, and Lansing 844 PM EDT Tue Sep 21 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch continues for * A portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham and Jackson. * Through Thursday morning. * Moderate to occasionally heavy rain is expected through Thursday morning. Rain totals over 4 inches are possible. * Minor flooding of low areas and some rivers and streams will be possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. 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. Weather Preparedness Information is available online at www.ready.gov/floods. && $$ CAS
262 WGUS63 KGRR 221502 FFAGRR Flood Watch National Weather Service Grand Rapids MI 1102 AM EDT Wed Sep 22 2021 MIZ059-066-067-073-074-222315- /O.CON.KGRR.FA.A.0002.000000T0000Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of Charlotte, St. Johns, Jackson, Battle Creek, and Lansing 1102 AM EDT Wed Sep 22 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch continues for * A portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham and Jackson. * Through Thursday morning. * Moderate to occasionally heavy rain is expected through Thursday morning. Rain totals over 4 inches are possible. * Minor flooding of low areas and some rivers and streams will be possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Weather Preparedness Information is available online at www.ready.gov/floods. && $$ MJS
561 WGUS63 KGRR 221937 FFAGRR Flood Watch National Weather Service Grand Rapids MI 337 PM EDT Wed Sep 22 2021 MIZ059-066-067-073-074-230345- /O.CON.KGRR.FA.A.0002.000000T0000Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of Charlotte, St. Johns, Jackson, Battle Creek, and Lansing 337 PM EDT Wed Sep 22 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch continues for * A portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham and Jackson. * Through Thursday morning. * Moderate to occasionally heavy rain is expected through Thursday morning. Rain totals over 4 inches are possible. * Minor flooding of low areas and some rivers and streams will be possible. 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. && $$ MJS
348 WGUS63 KGRR 230017 FFAGRR Flood Watch National Weather Service Grand Rapids MI 817 PM EDT Wed Sep 22 2021 MIZ059-066-067-073-074-230830- /O.CON.KGRR.FA.A.0002.000000T0000Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of Charlotte, St. Johns, Jackson, Battle Creek, and Lansing 817 PM EDT Wed Sep 22 2021 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT THURSDAY... The Flood Watch continues for * A portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham and Jackson. * Until 8 AM EDT Thursday. * Moderate to occasionally heavy rain is expected through Thursday morning. Rain totals over 4 inches are possible. * Minor flooding of low areas and some rivers and streams will be possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Weather Preparedness Information is available online at www.ready.gov/floods. && $$ WDM
115 WGUS63 KGRR 230752 FFAGRR Flood Watch National Weather Service Grand Rapids MI 352 AM EDT Thu Sep 23 2021 MIZ059-066-067-073-074-230900- /O.CAN.KGRR.FA.A.0002.000000T0000Z-210923T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clinton-Eaton-Ingham-Calhoun-Jackson- Including the cities of Charlotte, St. Johns, Jackson, Battle Creek, and Lansing 352 AM EDT Thu Sep 23 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for a portion of south central Michigan, including the following areas, Calhoun, Clinton, Eaton, Ingham and Jackson has been cancelled. Rain will continue today but the risk of flooding has decreased. $$ Meade
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:34 AM EDT | Gale Watch | GRR | 21 hr | |
| Sep 21, 7:34 AM EDT | Small Craft Advisory | GRR | 30 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.