Flash Flood Watch 1, NWS Pocatello, ID

746 
WGUS65 KPIH 311157
FFAPIH

Flood Watch
National Weather Service Pocatello ID
557 AM MDT Sat Jul 31 2021

IDZ056>064-312100-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Including the cities of McCammon, Emigration Summit, Malta, 
Montpelier, Downey, Georgetown, Inkom, Rockland, Malad, Wayan, 
Grace, St. Charles, Almo, Henry, Swan Valley, Soda Springs, Bone, 
Albion, Holbrook, Lava Hot Springs, Thatcher, Preston, and Victor
557 AM MDT Sat Jul 31 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* Portions of eastern Idaho and southeast Idaho, including the 
  following areas, in eastern Idaho, Big Hole Mountains. In 
  southeast Idaho, Bear Lake Valley, Bear River Range, Blackfoot 
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh 
  and Arbon Highlands, Raft River Region and Southern Hills/Albion 
  Mountains.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ069-071>074-312100-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun
Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Ketchum, Copper Basin, Sun Valley, Borah 
Peak, Clayton, Galena, and Stanley
557 AM MDT Sat Jul 31 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* A portion of central Idaho, including the following areas, Big 
  Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River 
  Range, Sawtooth/Stanley Basin and Sun Valley Region.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

GK

606 
WGUS65 KPIH 311925
FFAPIH

Flood Watch
National Weather Service Pocatello ID
125 PM MDT Sat Jul 31 2021

IDZ056>064-011200-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Including the cities of McCammon, Emigration Summit, Malta, 
Montpelier, Downey, Georgetown, Inkom, Rockland, Malad, Wayan, 
Grace, St. Charles, Almo, Henry, Swan Valley, Soda Springs, Bone, 
Albion, Holbrook, Lava Hot Springs, Thatcher, Preston, and Victor
125 PM MDT Sat Jul 31 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* Portions of eastern Idaho and southeast Idaho, including the 
  following areas, in eastern Idaho, Big Hole Mountains. In 
  southeast Idaho, Bear Lake Valley, Bear River Range, Blackfoot 
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh 
  and Arbon Highlands, Raft River Region and Southern Hills/Albion 
  Mountains.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ069-071>074-011200-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun
Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Ketchum, Copper Basin, Sun Valley, Borah 
Peak, Clayton, Galena, and Stanley
125 PM MDT Sat Jul 31 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* A portion of central Idaho, including the following areas, Big 
  Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River 
  Range, Sawtooth/Stanley Basin and Sun Valley Region.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

DV

390 
WGUS65 KPIH 011440
FFAPIH

Flood Watch
National Weather Service Pocatello ID
840 AM MDT Sun Aug 1 2021

IDZ056>064-021500-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Including the cities of McCammon, Emigration Summit, Malta, 
Montpelier, Downey, Georgetown, Inkom, Rockland, Malad, Wayan, 
Grace, St. Charles, Almo, Henry, Swan Valley, Soda Springs, Bone, 
Albion, Holbrook, Lava Hot Springs, Thatcher, Preston, and Victor
840 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* Portions of eastern Idaho and southeast Idaho, including the 
  following areas, in eastern Idaho, Big Hole Mountains. In 
  southeast Idaho, Bear Lake Valley, Bear River Range, Blackfoot 
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh 
  and Arbon Highlands, Raft River Region and Southern Hills/Albion 
  Mountains.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ069-071>074-021500-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun
Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Ketchum, Copper Basin, Sun Valley, Borah 
Peak, Clayton, Galena, and Stanley
840 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* A portion of central Idaho, including the following areas, Big 
  Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River 
  Range, Sawtooth/Stanley Basin and Sun Valley Region.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

DV

879 
WGUS65 KPIH 011751
FFAPIH

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pocatello ID
1151 AM MDT Sun Aug 1 2021

IDZ065>068-021500-
/O.EXB.KPIH.FF.A.0001.210802T1800Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Teton Valley-Centennial Mountains - Island Park-Beaverhead - Lemhi
Highlands-Lost River Valley-
Including the cities of Driggs, Mackay, Tetonia, Edie School, 
Dubois, Spencer, Chilly, Howe, Small, Ashton, Kilgore, Arco, and 
Island Park
1151 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY 
EVENING...

The National Weather Service in Pocatello has expanded the

* Flash Flood Watch to include portions of central Idaho and eastern 
  Idaho, including the following areas, in central Idaho, Lost River 
  Valley. In eastern Idaho, Beaverhead - Lemhi Highlands, Centennial 
  Mountains - Island Park and Teton Valley.

* From Monday afternoon through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ056>064-021500-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Including the cities of McCammon, Emigration Summit, Malta, 
Montpelier, Downey, Georgetown, Inkom, Rockland, Malad, Wayan, 
Grace, St. Charles, Almo, Henry, Swan Valley, Soda Springs, Bone, 
Albion, Holbrook, Lava Hot Springs, Thatcher, Preston, and Victor
1151 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* Portions of eastern Idaho and southeast Idaho, including the 
  following areas, in eastern Idaho, Big Hole Mountains. In 
  southeast Idaho, Bear Lake Valley, Bear River Range, Blackfoot 
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh 
  and Arbon Highlands, Raft River Region and Southern Hills/Albion 
  Mountains.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ069-071>074-021500-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun
Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Ketchum, Copper Basin, Sun Valley, Borah 
Peak, Clayton, Galena, and Stanley
1151 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* A portion of central Idaho, including the following areas, Big 
  Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River 
  Range, Sawtooth/Stanley Basin and Sun Valley Region.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

DV

893 
WGUS65 KPIH 011755
FFAPIH

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pocatello ID
1155 AM MDT Sun Aug 1 2021

IDZ070-021500-
/O.EXA.KPIH.FF.A.0001.210802T1800Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Challis/Pahsimeroi Valleys-
Including the cities of Challis
1155 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY 
EVENING...

The National Weather Service in Pocatello has expanded the

* Flash Flood Watch to include a portion of central Idaho, including 
  the following area, Challis/Pahsimeroi Valleys.

* From Monday afternoon through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ056>064-021500-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Including the cities of McCammon, Emigration Summit, Malta, 
Montpelier, Downey, Georgetown, Inkom, Rockland, Malad, Wayan, 
Grace, St. Charles, Almo, Henry, Swan Valley, Soda Springs, Bone, 
Albion, Holbrook, Lava Hot Springs, Thatcher, Preston, and Victor
1155 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* Portions of eastern Idaho and southeast Idaho, including the 
  following areas, in eastern Idaho, Big Hole Mountains. In 
  southeast Idaho, Bear Lake Valley, Bear River Range, Blackfoot 
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh 
  and Arbon Highlands, Raft River Region and Southern Hills/Albion 
  Mountains.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ069-071>074-021500-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun
Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Ketchum, Copper Basin, Sun Valley, Borah 
Peak, Clayton, Galena, and Stanley
1155 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

The Flash Flood Watch continues for

* A portion of central Idaho, including the following areas, Big 
  Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River 
  Range, Sawtooth/Stanley Basin and Sun Valley Region.

* Through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ065>068-021500-
/O.CON.KPIH.FF.A.0001.210802T1800Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Teton Valley-Centennial Mountains - Island Park-Beaverhead - Lemhi
Highlands-Lost River Valley-
Including the cities of Driggs, Mackay, Tetonia, Edie School, 
Dubois, Spencer, Chilly, Howe, Small, Ashton, Kilgore, Arco, and 
Island Park
1155 AM MDT Sun Aug 1 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH 
MONDAY EVENING...

The Flash Flood Watch continues for

* Portions of central Idaho and eastern Idaho, including the 
  following areas, in central Idaho, Lost River Valley. In eastern 
  Idaho, Beaverhead - Lemhi Highlands, Centennial Mountains - Island 
  Park and Teton Valley.

* From Monday afternoon through Monday evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

DV

154 
WGUS65 KPIH 021026
FFAPIH

Flood Watch
National Weather Service Pocatello ID
426 AM MDT Mon Aug 2 2021

IDZ056>064-030300-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Including the cities of McCammon, Emigration Summit, Malta, 
Montpelier, Downey, Georgetown, Inkom, Rockland, Malad, Wayan, 
Grace, St. Charles, Almo, Henry, Swan Valley, Soda Springs, Bone, 
Albion, Holbrook, Lava Hot Springs, Thatcher, Preston, and Victor
426 AM MDT Mon Aug 2 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

The Flash Flood Watch continues for

* Portions of eastern Idaho and southeast Idaho, including the 
  following areas, in eastern Idaho, Big Hole Mountains. In 
  southeast Idaho, Bear Lake Valley, Bear River Range, Blackfoot 
  Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh 
  and Arbon Highlands, Raft River Region and Southern Hills/Albion 
  Mountains.

* Through this evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ069-071>074-030300-
/O.CON.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun
Valley Region-Big Lost Highlands/Copper Basin-
Including the cities of Ketchum, Copper Basin, Sun Valley, Borah 
Peak, Clayton, Galena, and Stanley
426 AM MDT Mon Aug 2 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

The Flash Flood Watch continues for

* A portion of central Idaho, including the following areas, Big 
  Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River 
  Range, Sawtooth/Stanley Basin and Sun Valley Region.

* Through this evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IDZ065>068-070-030300-
/O.CON.KPIH.FF.A.0001.210802T1800Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Teton Valley-Centennial Mountains - Island Park-Beaverhead - Lemhi
Highlands-Lost River Valley-Challis/Pahsimeroi Valleys-
Including the cities of Driggs, Mackay, Tetonia, Edie School, 
Challis, Dubois, Spencer, Chilly, Howe, Small, Ashton, Kilgore, 
Arco, and Island Park
426 AM MDT Mon Aug 2 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM NOON MDT TODAY THROUGH 
THIS EVENING...

The Flash Flood Watch continues for

* Portions of central Idaho and eastern Idaho, including the 
  following areas, in central Idaho, Challis/Pahsimeroi Valleys and 
  Lost River Valley. In eastern Idaho, Beaverhead - Lemhi Highlands, 
  Centennial Mountains - Island Park and Teton Valley.

* From Noon MDT today through this evening.

* Slow moving thunderstorms may produce locally heavy rain, possibly 
  resulting in flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

GK

303 
WGUS65 KPIH 030254
FFAPIH

Flood Watch
National Weather Service Pocatello ID
854 PM MDT Mon Aug 2 2021

IDZ056>074-030400-
/O.EXP.KPIH.FF.A.0001.000000T0000Z-210803T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear Lake
Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-Teton
Valley-Centennial Mountains - Island Park-Beaverhead - Lemhi
Highlands-Lost River Valley-Lost River Range-Challis/Pahsimeroi
Valleys-Frank Church Wilderness-Sawtooth/Stanley Basin-Sun Valley
Region-Big Lost Highlands/Copper Basin-
Including the cities of McCammon, Edie School, Howe, Copper Basin, 
Emigration Summit, Malta, Montpelier, Clayton, Downey, Island Park, 
Ketchum, Georgetown, Inkom, Rockland, Spencer, Malad, Wayan, Arco, 
Grace, Driggs, Sun Valley, Tetonia, St. Charles, Almo, Chilly, 
Henry, Small, Ashton, Kilgore, Swan Valley, Soda Springs, Bone, 
Albion, Borah Peak, Mackay, Dubois, Challis, Holbrook, Lava Hot 
Springs, Thatcher, Galena, Stanley, Preston, and Victor
854 PM MDT Mon Aug 2 2021

...FLASH FLOOD WATCH WILL EXPIRE AT 9 PM MDT THIS EVENING...

The Flash Flood Watch for portions of central Idaho, eastern Idaho 
and southeast Idaho, including the following areas, in central 
Idaho, Big Lost Highlands/Copper Basin, Challis/Pahsimeroi Valleys, 
Frank Church Wilderness, Lost River Range, Lost River Valley, 
Sawtooth/Stanley Basin and Sun Valley Region. In eastern Idaho, 
Beaverhead - Lemhi Highlands, Big Hole Mountains, Centennial 
Mountains - Island Park and Teton Valley. In southeast Idaho, Bear 
Lake Valley, Bear River Range, Blackfoot Mountains, Caribou Range, 
Franklin/Eastern Oneida Region, Marsh and Arbon Highlands, Raft 
River Region and Southern Hills/Albion Mountains will expire at 9 PM 
MDT this evening.

The Flood Watch will expire at 9 pm.  Flooding is no longer expected 
to pose a threat. Please continue to heed remaining road closures.

$$

GK

Area Forecast Discussion
National Weather Service Pocatello ID
259 AM MDT Fri Jul 30 2021

.SHORT TERM...Today through Sunday night. Early morning satellite
imagery continued to show a broad high pressure ridge centered over
the mid-west with a very moist sub-tropical flow rotating through
the desert SW into SRN Idaho. One very clear cyclonic wave was
observed lifting WNW along the SW Texas border with perhaps a second
weaker leading wave shifting into SE Arizona. Further north across
NE Utah there very well may be yet another system trekking north but
obscured by considerable convective debris (we will take that as a
hint). The numerical models continue to cycle the sub-tropical
moisture north into the region today through Sunday while lifting
the Arizona wave north into SRN Nevada today, the Idaho-Oregon-
Nevada triple point Saturday afternoon, and then into NE Oregon by
Sunday morning with enhanced precipitation totals accompanying this
system through the Great Basin. With all that in mind, the obscured
disturbance lifting north through NE Utah this morning will likely
shift NE through SW Wyoming this afternoon triggering enhanced
diurnal convection across the SE mountains while something more akin
to airmass thunderstorm activity fires along a line from Galena
Summit to Gilmore under an upper deformation axis. Early morning
Hires Convective (HRRR) model runs (the last 6 of 9) were actually
showing the potential for Debris Flow triggering rainfall over the
Badger Fire Scar today. As a result, a burn scar Flash Flood Watch
may be forthcoming later this morning. Cloud cover advecting into
the region in advance of the Nevada system will likely inhibit
shower and thunderstorm activity across SE Idaho Saturday morning
but just as a hedge we will keep a chance mention of precipitation
going across the area as the track of that system is still
somewhat fluid. By Saturday afternoon as the wave hits the
aforementioned triple point, we should see scattered convection
firing across the region favoring the Magic Valley and Wood River
Valley regions closer to the passing system which will continue
into the late evening hours as the disturbance lifts north toward
Pendleton. By Sunday, the wave will have lifted north into
Washington and the Panhandle with the CNTRL mountain zones falling
on the periphery of influence. Further south across the Snake
River Plain and SE mountains, the National Blend of Models is
still advertising some fairly elevated precipitation potential
which is not entirely supported by either operational model (GFS
or NAM). My only thought here is that perhaps some trailing energy
perhaps from the Texas wave will translate into the region Sunday
evening (which is partially supported by the GFS) supporting
convection. A lot of moving parts here in the forecast...with the
screaming message being we stand a strong chance of getting wet
across the region either Saturday or Sunday from one or both of
these advancing waves. The second item of concern is the potential
for flash flooding which we will try to hone in on over the
course of the next several forecast cycles. Stay tuned! Huston

.LONG TERM...Monday through Friday.
Expect Monday to be the last day of extensive moisture as last of
monsoonal moisture will bring widespread shower activity as short
wave pushes through Idaho. Expect some drying Tuesday as upper
level ridging slides in with only slight chance of showers and
thunderstorms. Another wave may approach late Wednesday into
Thursday with better chance of showers and thunderstorms again.
Ridging will bring drying again on Friday. Monday likely to be
coolest day with well below normal temperatures possible in clouds
and precipitation. Expect rising temperatures the remainder of
next week with high temperatures back to normal by Friday.
GK

&&

.AVIATION...
Will be similar conditions today with again a chance for
thunderstorms across all of southeast Idaho. Have vicinity at all
sites this afternoon and evening. Showers and thunderstorms will
continue Saturday and Sunday and will be the main impact for
several days.
GK

&&

.FIRE WEATHER...A very moist sub-tropical flow will continue across
the region through Sunday. A disturbance rotating NE out of Utah
into SW Wyoming today will help to enhance thunderstorm activity
across the SE highlands with the potential for heavy rainfall.
Instability showers (along with heavy rain) will likely form along a
line from Galena Summit to Gilmore. A second disturbance lifting NNW
out of Arizona will hit the Idaho-Oregon-Nevada triple point
Saturday afternoon resulting in enhanced thunderstorm activity
skirting the Magic Valley, Wood River, and Saw Tooth's Saturday
afternoon and evening. A third disturbance rotating out of SW Texas
should arrive sometime Sunday evening bringing yet another round of
enhanced showers and thunderstorms to the region. At this time the
system looks to rotate through the Boise area but stay tuned, these
things never follow a set playbook. Screaming message in all this,
organized disturbances translating through moist sub-topical
environments can produce very heavy rainfall events. Landmanagers
operating in and around fires or burn scars should be extra
attentive to developments this weekend. It looks like we cycle back
into a drier SW flow/ridge pattern briefly Tuesday followed by a
Pacific trough lifting through the region Thursday. Lots of moving
parts here folks...stay tuned! Huston

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.
&&