Hazard Report Provided By forecast.weather.gov

Hydrologic Outlook
CAC093-ORC011-015-019-029-033-220900-

Hydrologic Outlook
National Weather Service Medford OR
1253 PM PST Wed Nov 20 2024

...Flood Potential Outlook for river flooding and small stream
flooding on rivers and streams in Coos, Curry, Douglas, Josephine,
Jackson, and Siskiyou counties...

A series of storms will bring heavy precipitation to Oregon and
Northern California this week. The heaviest rainfall is expected in
Curry and Siskiyou counties where they will likely see 8 inches of
rain through the week. Rainfall rates could briefly approach up to
an inch per hour. There is potential for heavy rain from Tuesday
night through Friday.

Some areas may experience periods of snowfall before turning back to
rain. Accumulated snow at low- and mid-elevations will likely melt
as the rain falls which would cause higher responses in creeks and
rivers than rainfall alone.

Area small streams could begin to flood early Wednesday morning. The
Coquille River is expected to approach minor flood stage Thursday or
Friday.

Creeks and streams below recent burn scars will likely be muddy.
There is also the potential for flash flooding and debris flows from
burn scars. While the Archie Creek Fire and McKinney Fire burn scars
are not new, they continue to be of concern during heavy rainfall
like we expect during this event.

Use caution near flowing water. Turn around, don`t drown.

$$

SH

Flood Warning
National Weather Service Medford OR
1046 PM PST Wed Nov 20 2024

CAC093-230800-
/O.NEW.KMFR.FA.W.0004.241121T0646Z-241123T0800Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Siskiyou CA-
1046 PM PST Wed Nov 20 2024

...FLOOD WARNING IN EFFECT UNTIL MIDNIGHT PST FRIDAY NIGHT...

* WHAT...Flooding caused by excessive rainfall and snowmelt is
  expected.

* WHERE...A portion of northern California, including the following
  county, Siskiyou, including the cities of Mount Shasta City, Weed,
  Callahan and Tennant.

* WHEN...Until midnight PST Friday Night.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
  and flood-prone locations is imminent or occurring.

* ADDITIONAL DETAILS...
  - At 1042 PM PST, Satellite estimates and rain gauge data
    indicate heavy rain and snowmelt in the warned area. Flooding
    is ongoing or expected to begin shortly. Between 2 and 6
    inches of rain have fallen.
  - Additional rainfall amounts of 3 to 7 inches are possible in
    the warned area. Many areas that received heavy snowfall
    earlier have switched over to rain. Rain can melt the snow
    and cause a higher runoff response than rainfall alone.
  - Some locations that will experience flooding include...
    Mount Shasta, Weed, Dunsmuir, Pilgrim Creek Snow Park, Trout
    Creek Campground, Cattle Camp Campground, Fowlers Camp
    Campground And McCloud Falls, McCloud, Tennant, Mount Shasta
    Summit Plateau, Mount Shasta Ski Park Highway, Mount Shasta
    Bunny Flat Trail, Mcbride Springs Campground, Pondosa, Four
    Corners Snow Park, I 5 Black Butte Summit, Carrick, Edgewood,
    Medicine Lake Campground and Callahan.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4137 12266 4142 12264 4144 12252 4146 12253
      4149 12230 4152 12231 4152 12216 4160 12203
      4166 12151 4149 12147 4148 12149 4122 12146
      4119 12148 4118 12248 4121 12252 4132 12248
      4137 12254 4133 12264 4121 12279 4132 12282


$$

MAS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
953 PM PST Wed Nov 20 2024

CAZ082-083-211500-
/O.EXP.KMFR.WS.W.0018.000000T0000Z-241121T0600Z/
/O.EXB.KMFR.WW.Y.0031.000000T0000Z-241121T1500Z/
South Central Siskiyou County-North Central and Southeast
Siskiyou County-
Including the cities of Dunsmuir, Pondosa, McCloud, Mount Shasta,
Bray, and Tennant
953 PM PST Wed Nov 20 2024

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 AM PST THURSDAY ABOVE
4500 FEET...
...WINTER STORM WARNING WILL EXPIRE AT 10 PM PST THIS EVENING...

* WHAT...Wet snow above 4500 feet. Additional snow accumulations 3
  to 6 inches.

* WHERE...Central and Southeast Siskiyou County. This includes
  Snowmans Summit on Highway 89 and the higher terrain around Mount
  Shasta.

* WHEN...Until 7 AM PST Thursday.

* IMPACTS...Travel could be very difficult with reduced visibility.
  The hazardous conditions could impact the Thursday morning commute.

* ADDITIONAL DETAILS...Snow levels will gradually rise to around
  6000 feet early Thursday morning with snow changing to rain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. Call 511 or visit
quickmap.dot.ca.gov for road information.

&&

$$

Flood Warning
National Weather Service Medford OR
1245 PM PST Wed Nov 20 2024

CAC093-ORC011-015-029-033-230800-
/O.NEW.KMFR.FA.W.0003.241120T2045Z-241123T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Siskiyou CA-Coos OR-Curry OR-Jackson OR-Josephine OR-
1245 PM PST Wed Nov 20 2024

...FLOOD WARNING IN EFFECT UNTIL MIDNIGHT PST FRIDAY NIGHT...
...REPLACES FLOOD WATCH...

* WHAT...Flooding caused by excessive rainfall and snow melt is
  expected.

* WHERE...Portions of southwest Oregon, including Coos, Curry,
  Jackson, and Josephine counties and western Siskiyou County in
  northern California.

* WHEN...Until midnight PST Friday Night.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
  and flood-prone locations is expected.

* ADDITIONAL DETAILS...
  - At 1227 PM PST, satellite estimates and rain gauge data
    indicate heavy rain in the warned area. Between 1 and 6
    inches of rain have fallen.
  - Additional rainfall amounts of 3 to 7 inches are possible in
    the warned area. Some areas will receive snowfall and then
    switch to rainfall. Rain can melt the snow and cause a higher
    runoff response than rainfall alone.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4311 12444 4290 12392 4277 12393 4274 12357
      4240 12324 4214 12323 4214 12306 4175 12289
      4120 12280 4118 12296 4099 12292 4108 12325
      4137 12348 4138 12366 4183 12370 4200 12352
      4200 12421 4210 12435 4263 12440 4284 12457


$$

SH

CAZ082-212000-

URGENT - IMMEDIATE BROADCAST REQUESTED
AVALANCHE WARNING
USDA FOREST SERVICE MOUNT SHASTA AVALANCHE CENTER
Relayed by National Weather Service Medford OR
1044 PM PST Mon Nov 18 2024

...AVALANCHE WARNING IN EFFECT UNTIL 12PM PST Thursday...

The Mount Shasta Avalanche Center has issued a BACKCOUNTRY
AVALANCHE WARNING for the following areas:
NWS Medford OR - CAZ082 (South Central Siskiyou County).

* WHAT...An exceptionally powerful atmospheric river will impact
  the Mount Shasta region. Prolonged periods of heavy snowfall,
  along with rain-on-snow will create high avalanche danger.

* WHERE...Avalanche terrain of Mount Shasta, Castle Lake, the
  Eddy Mountains, and Ash Creek Butte area east of Mount Shasta.

* WHEN...In effect from Tue 12:00 PST to Thu 12:00 PST.

* IMPACTS...Intense rainfall and multiple feet of new snow will
  produce large and destructive avalanches. These avalanches may
  run long distances into flat terrain, valley floors, and mature
  forests. In addition, debris flows are possible out of Mount
  Shasta drainages such as Cascade Gulch, Ash Creek, and Mud
  Creek.

* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
  conditions. Travel in, near, or below avalanche terrain is not
  recommended. Recreational users without backcountry avalanche
  skills are advised to stay out of the backcountry. Deep snow
  conditions exist.

Consult http://shastaavalanche.org/ or www.avalanche.org for more
detailed information.

Similar avalanche danger may exist at locations outside the
coverage area of this or any avalanche center.

$$

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