Alert archive / Washington / Flood Watches in 2021
Flood Watch 2, NWS Spokane, WA
NWS Spokane, WA issued this flood watch at Oct 26, 2021, 2:06 PM PDT for Chelan County, Okanogan County, Washington; Bonner County, Idaho. It took effect at Oct 28, 2021, 1:00 AM PDT. It was in force for 38 hr.
The area
The counties it named.
The facts
- Issued
- Oct 26, 2021, 2:06 PM PDT (21:06 UTC)
- In effect from
- Oct 28, 2021, 1:00 AM PDT
- Expired
- Oct 29, 2021, 3:00 PM PDT
- In force
- 38 hr
- Issued by
- NWS Spokane, WA
- Flood severity
- None
Counties Bonner County, ID, Chelan County, WA, Okanogan County, WA
The radar
The Spokane radar (KOTX), 119 km from the middle of the area, began a volume at 21:07 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
Spokane, WA (KOTX), launched 12:00Z, 9.1 hours before the alert went out and 202 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 911 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
244 WGUS66 KOTX 262106 FFAOTX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Spokane WA 206 PM PDT Tue Oct 26 2021 .Periods of moderate to heavy rain are expected over 2021 burn scars in Okanogan, Chelan, and Bonner counties late Wednesday night through late Thursday night. Rainfall amounts in excess of one inch will increase the chances for mud and rock slides over these areas. WAC007-047-271400- /O.NEW.KOTX.FA.A.0002.211028T0800Z-211029T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 206 PM PDT Tue Oct 26 2021 ...FLOOD WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY EVENING... The National Weather Service in Spokane has issued a * Flood Watch for a portion of North Central Washington, including the following areas, Chelan and Okanogan. * From late Wednesday night through Thursday evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Okanogan County: Cedar Creek and Cub Creek 2. In Chelan County: 25 Mile Fire. 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. && $$ IDC017-271400- /O.NEW.KOTX.FA.A.0002.211028T1400Z-211029T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 206 PM PDT Tue Oct 26 2021 ...FLOOD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... The National Weather Service in Spokane has issued a * Flood Watch for a portion of North Idaho, including the following area, Bonner. * From Thursday morning through late Thursday night. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ Vmt
7 follow-up statements
117 WGUS66 KOTX 270429 FFAOTX Flood Watch National Weather Service Spokane WA 929 PM PDT Tue Oct 26 2021 .Periods of moderate to heavy rain are expected over 2021 burn scars in Okanogan, Chelan, and Bonner counties late Wednesday night through late Thursday night. Rainfall amounts in excess of one inch will increase the chances for mud and rock slides over these areas. WAC007-047-271400- /O.CON.KOTX.FA.A.0002.211028T0800Z-211029T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 929 PM PDT Tue Oct 26 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY EVENING... The Flood Watch continues for * A portion of North Central Washington, including the following counties, Chelan and Okanogan. * From late Wednesday night through Thursday evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Okanogan County: Cedar Creek and Cub Creek 2. In Chelan County: 25 Mile Fire. 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. && $$ IDC017-271400- /O.CON.KOTX.FA.A.0002.211028T1400Z-211029T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 929 PM PDT Tue Oct 26 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... The Flood Watch continues for * A portion of North Idaho, including the following county, Bonner. * From Thursday morning through late Thursday night. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ RJ
689 WGUS66 KOTX 270940 FFAOTX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Spokane WA 240 AM PDT Wed Oct 27 2021 .Periods of moderate to heavy rain are expected over 2021 burn scars in Okanogan, Chelan, and Bonner counties late Wednesday night through late Thursday night. Rainfall amounts in excess of one inch will increase the chances for mud and rock slides over these areas. IDC017-280000- /O.EXT.KOTX.FA.A.0002.211028T1400Z-211029T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 240 AM PDT Wed Oct 27 2021 ...FLOOD WATCH NOW IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... The Flood Watch is now in effect for * A portion of North Idaho, including the following county, Bonner. * From Thursday morning through Friday afternoon. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. 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. && $$ WAC007-047-280000- /O.CON.KOTX.FA.A.0002.211028T0800Z-211029T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 240 AM PDT Wed Oct 27 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY EVENING... The Flood Watch continues for * A portion of North Central Washington, including the following counties, Chelan and Okanogan. * From late tonight through Thursday evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Okanogan County: Cedar Creek and Cub Creek 2. In Chelan County: 25 Mile Fire. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ SB
153 WGUS66 KOTX 272210 FFAOTX Flood Watch National Weather Service Spokane WA 310 PM PDT Wed Oct 27 2021 .Periods of moderate to heavy rain are expected over 2021 burn scars in Okanogan, Chelan, and Bonner counties late Wednesday night through late Thursday night. Rainfall amounts in excess of one inch will increase the chances for mud and rock slides over these areas. WAC007-047-281300- /O.CON.KOTX.FA.A.0002.211028T0800Z-211029T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 310 PM PDT Wed Oct 27 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM 1 AM PDT THURSDAY THROUGH THURSDAY EVENING... The Flood Watch continues for * A portion of North Central Washington, including the following counties, Chelan and Okanogan. * From 1 AM PDT Thursday through Thursday evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Okanogan County: Cedar Creek and Cub Creek 2. In Chelan County: 25 Mile Fire. 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. && $$ IDC017-281300- /O.CON.KOTX.FA.A.0002.211028T1400Z-211029T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 310 PM PDT Wed Oct 27 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... The Flood Watch continues for * A portion of North Idaho, including the following county, Bonner. * From Thursday morning through Friday afternoon. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ VMT
495 WGUS66 KOTX 281149 FFAOTX Flood Watch National Weather Service Spokane WA 449 AM PDT Thu Oct 28 2021 WAC007-047-290600- /O.CON.KOTX.FA.A.0002.000000T0000Z-211029T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 449 AM PDT Thu Oct 28 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flood Watch continues for * A portion of North Central Washington, including the following counties, Chelan and Okanogan. * Through this evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Okanogan County: Cedar Creek and Cub Creek 2. In Chelan County: 25 Mile Fire. 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. && $$ IDC017-290615- /O.CON.KOTX.FA.A.0002.211028T1400Z-211029T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 449 AM PDT Thu Oct 28 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... The Flood Watch continues for * A portion of North Idaho, including the following county, Bonner. * Through Friday afternoon. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ VMT
849 WGUS66 KOTX 281605 FFAOTX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Spokane WA 905 AM PDT Thu Oct 28 2021 WAC007-047-291200- /O.EXT.KOTX.FA.A.0002.000000T0000Z-211029T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 905 AM PDT Thu Oct 28 2021 ...FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT... The Flood Watch is now in effect for * A portion of North Central Washington, including the following counties, Chelan and Okanogan. * Through late tonight. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Okanogan County: Cedar Creek and Cub Creek 2. In Chelan County: 25 Mile Fire. 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. && $$ IDC017-291200- /O.CON.KOTX.FA.A.0002.000000T0000Z-211029T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 905 AM PDT Thu Oct 28 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... The Flood Watch continues for * A portion of North Idaho, including the following county, Bonner. * Through Friday afternoon. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ JW
696 WGUS66 KOTX 291147 FFAOTX Flood Watch National Weather Service Spokane WA 447 AM PDT Fri Oct 29 2021 WAC007-047-291300- /O.EXP.KOTX.FA.A.0002.000000T0000Z-211029T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan-Okanogan- Including the cities of Plain, Twisp, Winthrop, and Mazama 447 AM PDT Fri Oct 29 2021 ...FLOOD WATCH WILL EXPIRE AT 5 AM PDT THIS MORNING... The Flood Watch for a portion of North Central Washington, including the following counties, Chelan and Okanogan. will expire at 5 AM PDT early this morning. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ IDC017-292200- /O.CON.KOTX.FA.A.0002.000000T0000Z-211029T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 447 AM PDT Fri Oct 29 2021 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... The Flood Watch continues for * A portion of North Idaho, including the following county, Bonner. * Until 3 PM PDT this afternoon. * Moderate to heavy rainfall over Trestle Creek Complex burn scar could result in mud and debris flows. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: Trestle Creek Complex. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ OTX
958 WGUS66 KOTX 292204 FFAOTX Flood Watch National Weather Service Spokane WA 304 PM PDT Fri Oct 29 2021 IDC017-292315- /O.EXP.KOTX.FA.A.0002.000000T0000Z-211029T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bonner- 304 PM PDT Fri Oct 29 2021 ...FLOOD WATCH HAS EXPIRED... The Flood Watch for a portion of North Idaho, including the following county, Bonner, has expired. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ OTX
Nearby
Flood Watches in Washington, 2021Flood Watches in Idaho, 2021Every flood watch in 2021
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.