Alert archive / Idaho / Flash Flood Watches in 2021
Flash Flood Watch 1, NWS Spokane, WA
NWS Spokane, WA issued this flash flood watch at Jan 3, 2021, 3:56 PM PST for Latah County, Idaho; Whitman County, Washington. It took effect at Jan 4, 2021, 7:00 AM PST. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Jan 3, 2021, 3:56 PM PST (23:56 UTC)
- In effect from
- Jan 4, 2021, 7:00 AM PST
- Expired
- Jan 4, 2021, 10:49 PM PST
- In force
- 16 hr
- Issued by
- NWS Spokane, WA
- Flood severity
- None
Counties Latah County, ID, Whitman County, WA
The radar
The Spokane radar (KOTX), 99 km from the middle of the area, began a volume at 23:57 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, 11.9 hours before the alert went out and 108 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
- 727 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 508 m²/s²
- 0-3 km storm-relative helicity
- 487 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
738 WGUS66 KOTX 032356 FFAOTX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Spokane WA 356 PM PST Sun Jan 3 2021 .Another round of rain will develop on Monday raising concern for flooding on Paradise Creek in Moscow. IDC057-WAC075-041400- /O.NEW.KOTX.FF.A.0001.210104T1500Z-210105T0800Z/ /00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Latah-Whitman- Including the cities of Potlatch, Rosalia, Colfax, Deary, Pullman, Moscow, Genesee, Kendrick, Uniontown, La Crosse, Juliaetta, and Oakesdale 356 PM PST Sun Jan 3 2021 ...FLASH FLOOD WATCH IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... The National Weather Service in Spokane has issued a * Flash Flood Watch for portions of North Idaho and Southeast Washington, including the following areas, in North Idaho, Latah. In Southeast Washington, Whitman. * From Monday morning through Monday evening. * An additional half inch of rain is likely Monday. With soils in the Paradise Creek basin are saturated or frozen. Without the soil capable of absoring run off, rapid rises are expected on Monday. * Paradise Creek flows through the community of Moscow Idaho and extreme eastern portions of Whitman county. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ GKOCH
3 follow-up statements
644 WGUS66 KOTX 041335 FFAOTX Flood Watch National Weather Service Spokane WA 535 AM PST Mon Jan 4 2021 .Another round of rain will develop today raising concerns for flooding on Paradise Creek in Moscow. IDC057-WAC075-042145- /O.CON.KOTX.FF.A.0001.210104T1500Z-210105T0800Z/ /00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Latah-Whitman- Including the cities of Potlatch, Rosalia, Colfax, Deary, Pullman, Moscow, Genesee, Kendrick, Uniontown, La Crosse, Juliaetta, and Oakesdale 535 AM PST Mon Jan 4 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * Portions of North Idaho and Southeast Washington, including the following areas, in North Idaho, Latah. In Southeast Washington, Whitman. * Through this evening. * An additional quarter to half inch of rain is likely today. Heaviest rainfall is expected this afternoon. Soils will have a difficult time absorbing the additional rain and snowmelt due to saturated or frozen soils with rapid rises likely. * Paradise Creek flows through the community of Moscow Idaho and extreme eastern portions of Whitman county. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ SVH
276 WGUS66 KOTX 042019 FFAOTX Flood Watch National Weather Service Spokane WA 1219 PM PST Mon Jan 4 2021 .More rain this afternoon and evening will lead to rises on Paradise Creek. IDC057-WAC075-050800- /O.CON.KOTX.FF.A.0001.000000T0000Z-210105T0800Z/ /00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Latah-Whitman- Including the cities of Potlatch, Rosalia, Colfax, Deary, Pullman, Moscow, Genesee, Kendrick, Uniontown, La Crosse, Juliaetta, and Oakesdale 1219 PM PST Mon Jan 4 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PST TONIGHT... The Flash Flood Watch continues for * Portions of North Idaho and Southeast Washington, including the following areas, in North Idaho, Latah. In Southeast Washington, Whitman. * Until Midnight PST tonight. * An additional third of an inch to half an inch of rain will fall over the Paradise Creek basin this afternoon and evening. Rapid rises are expected by this evening. * Significant rises on Paradise Creek are likely late this afternoon and early this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ GKOCH
119 WGUS66 KOTX 050649 FFAOTX Flood Watch National Weather Service Spokane WA 1049 PM PST Mon Jan 4 2021 IDC057-WAC075-050800- /O.CAN.KOTX.FF.A.0001.000000T0000Z-210105T0800Z/ /00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Latah-Whitman- Including the cities of Potlatch, Rosalia, Colfax, Deary, Pullman, Moscow, Genesee, Kendrick, Uniontown, La Crosse, Juliaetta, and Oakesdale 1049 PM PST Mon Jan 4 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of North Idaho and Southeast Washington, including the following areas, in North Idaho, Latah. In Southeast Washington, Whitman has been cancelled. The Flood Watch is cancelled. Flash flooding is no longer expected to pose a threat on Paradise Creek. A flood advisory remains in effect over this area for ponding of water in low lying areas. Avoid areas where water is over roadways. $$ SVH
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 3, 3:11 PM PST | Winter Weather Advisory | OTX | Bonner, Boundary, Kootenai | 21 hr |
| Jan 3, 5:45 AM PST | Winter Storm Watch | OTX | Ferry, Okanogan | 9 hr |
| Jan 3, 3:11 PM PST | Winter Storm Warning | OTX | Ferry, Okanogan | 28 hr |
Nearby
Flash Flood Watches in Idaho, 2021Flash Flood Watches in Washington, 2021Every flash 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.