Alert archive / California / Flood Watches in 2021
Flood Watch 4, NWS Medford, OR
NWS Medford, OR issued this flood watch at Oct 23, 2021, 4:46 AM PDT for Siskiyou County, California. It took effect at Oct 24, 2021, 2:00 AM PDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Oct 23, 2021, 4:46 AM PDT (11:46 UTC)
- In effect from
- Oct 24, 2021, 2:00 AM PDT
- Expired
- Oct 24, 2021, 5:00 PM PDT
- In force
- 15 hr
- Issued by
- NWS Medford, OR
- Flood severity
- None
County Siskiyou County, CA
The radar
The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 11:48 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
Medford/Jackson, OR (KMFR), launched 00:00Z, 11.8 hours before the alert went out and 89 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
- 9 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1228 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
888 WGUS66 KMFR 231146 FFAMFR URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Medford OR 446 AM PDT Sat Oct 23 2021 CAZ080-240000- /O.NEW.KMFR.FA.A.0004.211024T0900Z-211025T0000Z/ /O.CON.KMFR.FF.A.0002.211024T0900Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Siskiyou County- Including the cities of Callahan, Etna, Fort Jones, Greenview, Happy Camp, Scott Bar, and Somes Bar 446 AM PDT Sat Oct 23 2021 ...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON... ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON... The National Weather Service in Medford has issued a * Flood Watch for Western Siskiyou County in Northern California. * From late tonight through Sunday afternoon. * Periods of moderate to heavy rainfall are expected late tonight into Sunday afternoon resulting in additional rainfall amounts of 2 to 3 inches across western Siskiyou County. This rain, combined with recent heavy rains and some snowmelt is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain. 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. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && The Flash Flood Watch continues for * Wildfire burn scar areas in Western Siskiyou County including areas in and around the McCash and River Complex wildfire burn scars. * From late tonight through Sunday afternoon * Due to the potential for rainfall rates exceeding 0.75 inches an hour. * Rapid rises in rivers and creeks is possible, along with mudslides and debris flows that could block area roads and damage buildings and other infrastructure. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation 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. && $$ CAZ082-240000- /O.NEW.KMFR.FA.A.0004.211024T0900Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ South Central Siskiyou County- Including the cities of Dunsmuir, McCloud, and Mount Shasta 446 AM PDT Sat Oct 23 2021 ...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON... The National Weather Service in Medford has issued a * Flood Watch South Central Siskiyou County in northern California. * From late tonight through Sunday afternoon * Periods of moderate to heavy rainfall are expected late tonight into Sunday afternoon resulting in additional rainfall amounts of 2 to 3 inches. This rain, combined with recent heavy rains is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && $$ CAZ083-240000- /O.CON.KMFR.FF.A.0002.211024T0900Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Central and Southeast Siskiyou County- 446 AM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * A portion of Eastern Siskiyou County in northern California, including Whitney Creek and Highway 97 near Whitney Creek. * From late tonight through Sunday evening * Due to heavy rain and snow/ice melt over recently burned areas. * High water, mud, and debris may threaten US 97 where it crosses Whitney Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
3 follow-up statements
147 WGUS66 KMFR 232232 FFAMFR Flood Watch National Weather Service Medford OR 332 PM PDT Sat Oct 23 2021 CAZ080-241230- /O.CON.KMFR.FA.A.0004.211024T0900Z-211025T0000Z/ /O.CON.KMFR.FF.A.0002.211024T0900Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Siskiyou County- Including the cities of Callahan, Etna, Fort Jones, Greenview, Happy Camp, Scott Bar, and Somes Bar 332 PM PDT Sat Oct 23 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM 2 AM PDT SUNDAY THROUGH SUNDAY AFTERNOON... ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 AM PDT SUNDAY THROUGH SUNDAY AFTERNOON... The Flood Watch continues for * Western Siskiyou County in northern California. * From 2 AM PDT Sunday through Sunday afternoon. * Periods of moderate to heavy rainfall are expected late tonight into Sunday afternoon resulting in additional rainfall amounts of 2 to 3 inches across western Siskiyou County. This rain, combined with recent heavy rains and some snowmelt is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain. 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. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && The Flash Flood Watch continues for * Wildfire burn scar areas in Western Siskiyou County including areas in and around the McCash and River Complex wildfire burn scars. * From late tonight through Sunday afternoon, with the most intense rainfall rates late tonight into Sunday morning. * Due to the potential for rainfall rates exceeding 0.75 inches an hour. * Rapid rises in rivers and creeks is possible, along with mudslides and debris flows that could block area roads and damage buildings and other infrastructure. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation 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. && $$ CAZ083-241230- /O.CON.KMFR.FF.A.0002.211024T0900Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Central and Southeast Siskiyou County- 332 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 AM PDT SUNDAY THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * A portion of Eastern Siskiyou County in northern California, including Whitney Creek and Highway 97 near Whitney Creek. * From 2 AM PDT Sunday through Sunday evening, with the most intense rainfall rates late tonight through Sunday morning. * Due to heavy rain and snow/ice melt over recently burned areas. * High water, mud, and debris may threaten US 97 where it crosses Whitney Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CAZ082-241230- /O.CON.KMFR.FA.A.0004.211024T0900Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ South Central Siskiyou County- Including the cities of Dunsmuir, McCloud, and Mount Shasta 332 PM PDT Sat Oct 23 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM 2 AM PDT SUNDAY THROUGH SUNDAY AFTERNOON... The Flood Watch continues for * South Central Siskiyou County in northern California. * From late tonight through Sunday afternoon, with the most intense rainfall rates late tonight through Sunday morning. * Periods of moderate to heavy rainfall are expected late tonight into Sunday afternoon resulting in additional rainfall amounts of 2 to 3 inches. This rain, combined with recent heavy rains is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && $$
330 WGUS66 KMFR 241052 FFAMFR Flood Watch National Weather Service Medford OR 352 AM PDT Sun Oct 24 2021 CAZ080-250000- /O.CON.KMFR.FA.A.0004.000000T0000Z-211025T0000Z/ /O.CON.KMFR.FF.A.0002.000000T0000Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Siskiyou County- Including the cities of Callahan, Etna, Fort Jones, Greenview, Happy Camp, Scott Bar, and Somes Bar 352 AM PDT Sun Oct 24 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... The Flood Watch continues for * Western Siskiyou County in northern California. * Through this afternoon * Periods of moderate to heavy rainfall are expected into this afternoon resulting in additional rainfall amounts of 1 to 2 inches across western Siskiyou County. This rain, combined with recent heavy rains and some snowmelt is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain. 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. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && The Flash Flood Watch continues for * Wildfire burn scar areas in Western Siskiyou County including areas in and around the McCash and River Complex wildfire burn scars. * Through this afternoon, with the most intense rainfall rates this morning. * Due to the potential for rainfall rates exceeding 0.75 inches an hour. * Rapid rises in rivers and creeks is possible, along with mudslides and debris flows that could block area roads and damage buildings and other infrastructure. 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. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && $$ CAZ083-250000- /O.CON.KMFR.FF.A.0002.000000T0000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Central and Southeast Siskiyou County- 352 AM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * A portion of Eastern Siskiyou County in northern California, including Whitney Creek and Highway 97 near Whitney Creek. * Through this evening * Due to heavy rain and snow/ice melt over recently burned areas. * High water, mud, and debris may threaten US 97 where it crosses Whitney Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CAZ082-250000- /O.CON.KMFR.FA.A.0004.000000T0000Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ South Central Siskiyou County- Including the cities of Dunsmuir, McCloud, and Mount Shasta 352 AM PDT Sun Oct 24 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... The Flood Watch continues for * South Central Siskiyou County in northern California. * Through this afternoon * Periods of moderate to heavy rainfall are expected into this afternoon resulting in additional rainfall amounts of 2 to 3 inches. This rain, combined with recent heavy rains is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain. 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. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides. && $$
941 WGUS66 KMFR 242344 FFAMFR Flood Watch National Weather Service Medford OR 444 PM PDT Sun Oct 24 2021 CAZ080-250045- /O.EXP.KMFR.FA.A.0004.000000T0000Z-211025T0000Z/ /00000.0.UU.000000T0000Z.000000T0000Z.000000T0000Z.OO/ /O.EXP.KMFR.FF.A.0002.000000T0000Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Siskiyou County- Including the cities of Seiad Valley, Scott Bar, Fort Jones, Happy Camp, Callahan, Etna, Greenview, and Somes Bar 444 PM PDT Sun Oct 24 2021 ...FLOOD WATCH WILL EXPIRE AT 5 PM PDT THIS AFTERNOON... ...FLASH FLOOD WATCH FOR THE MCCASH BURN SCAR WILL EXPIRE AT 5 PM PDT THIS AFTERNOON... The Flood Watch for a portion of northern California, including the following area, Western Siskiyou County will expire at 5 PM PDT this afternoon. Periods of rain will continue this evening, but the heaviest rain has passed and flooding is no longer expected to pose a threat. Please continue to heed road closures. The Flash Flood Watch for a portion of northern California, including the following area, Western Siskiyou County will expire at 5 PM PDT this afternoon. Periods of rain will continue this evening, but the heaviest rain has passed and flooding is no longer expected to pose a threat. Please continue to heed road closures. $$ CAZ082-250045- /O.EXP.KMFR.FA.A.0004.000000T0000Z-211025T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ South Central Siskiyou County- Including the cities of McCloud, Dunsmuir, and Mount Shasta 444 PM PDT Sun Oct 24 2021 ...FLOOD WATCH WILL EXPIRE AT 5 PM PDT THIS AFTERNOON... The Flood Watch for a portion of northern California, including the following area, South Central Siskiyou County will expire at 5 PM PDT this afternoon. Periods of rain will continue this evening, but the heaviest rain has passed and flooding is no longer expected to pose a threat. Please continue to heed road closures. $$ CAZ083-250600- /O.CON.KMFR.FF.A.0002.000000T0000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Central and Southeast Siskiyou County- Including the cities of Bray, Tennant, and Pondosa 444 PM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... The Flash Flood Watch continues for * A portion of northern California, including the following area, North Central and Southeast Siskiyou County. * Until 11 PM PDT this evening. * Due to heavy rain and snow/ice melt over recently burned areas. * High water, mud, and debris may threaten US 97 where it crosses Whitney Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
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.