Alert archive / Washington / Flood Watches in 2021
Flood Watch 1, NWS Spokane, WA
NWS Spokane, WA issued this flood watch at Oct 24, 2021, 2:26 AM PDT for Chelan County, Ferry County, Okanogan County, Washington. It took effect at Oct 24, 2021, 1:00 PM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Oct 24, 2021, 2:26 AM PDT (09:26 UTC)
- In effect from
- Oct 24, 2021, 1:00 PM PDT
- Expired
- Oct 24, 2021, 9:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS Spokane, WA
- Flood severity
- None
Counties Chelan County, WA, Ferry County, WA, Okanogan County, WA
The radar
The Spokane radar (KOTX), 164 km from the middle of the area, began a volume at 09:29 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 00:00Z, 9.4 hours before the alert went out and 249 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
- 963 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
098 WGUS66 KOTX 240926 FFAOTX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Spokane WA 226 AM PDT Sun Oct 24 2021 .Moderate to heavy rainfall will be possible over recent burn scars in Okanogan and Ferry Counties today. Rain will increase this morning with generally light intensities through midday. Clusters of moderate to heavy rainfall will follow Sunday afternoon and early evening. Rainfall amounts in excess of one inch will be possible and could result in mud and debris flows over recent burn scars. WAC019-047-250315- /O.NEW.KOTX.FA.A.0001.211024T2000Z-211025T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ferry-Okanogan- Including the cities of Mazama, Laurier, Winthrop, Chesaw, Danville, Curlew, Molson, Malo, Republic, Methow, Keller, Twisp, Conconully, and Inchelium 226 AM PDT Sun Oct 24 2021 ...FLOOD WATCH IN EFFECT FROM 1 PM PDT THIS AFTERNOON THROUGH THIS EVENING... The National Weather Service in Spokane has issued a * Flood Watch for portions of North Central and Northeast Washington, including the following areas, in North Central Washington, Okanogan. In Northeast Washington, Ferry. * From 1 PM PDT this afternoon through this evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and debris flows. * Mud and debris flows 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, Cub Creek 2, Muckamuck, Chickadee Creek. In Ferry County: Walker Creek, Bulldog Mountain, Summit Trail, Chuweah Creek 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. && $$ SB
1 follow-up statement
412 WGUS66 KOTX 241619 FFAOTX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Spokane WA 919 AM PDT Sun Oct 24 2021 .Mud and rock slides will be possible today over the steep terrain of Okanogan, Ferry, and Chelan counties this afternoon and this evening. Periods of moderate to heavy rain are expected this afternoon and this evening over several areas that were moderately to severely burned this summer. WAC007-250400- /O.EXA.KOTX.FA.A.0001.211024T2000Z-211025T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chelan- 919 AM PDT Sun Oct 24 2021 ...FLOOD WATCH IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... The National Weather Service in Spokane has expanded the * Flood Watch to include a portion of North Central Washington, including the following area, Chelan. * From 1 PM this afternoon to 9 PM PDT this evening. * Moderate to heavy rainfall over 2021 burn scars could result in mud and rock slides. * Mud and rock slides near recent burn scars will have the potential to flow down steep terrain and impact roads and backcountry trails. Burn scars included in the watch: In Chelan County, 25 Mile Fire PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ WAC019-047-250400- /O.CON.KOTX.FA.A.0001.211024T2000Z-211025T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ferry-Okanogan- Including the cities of Mazama, Laurier, Winthrop, Chesaw, Danville, Curlew, Molson, Malo, Republic, Methow, Keller, Twisp, Conconully, and Inchelium 919 AM PDT Sun Oct 24 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... The Flood Watch continues for * Portions of North Central and Northeast Washington, including the following areas, in North Central Washington, Okanogan. In Northeast Washington, Ferry. * From 1 PM this afternoon to 9 PM PDT 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, Cub Creek 2, Muckamuck, Chickadee Creek. In Ferry County: Walker Creek, Bulldog Mountain, Summit Trail, Chuweah Creek. 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. && $$ GKOCH
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.