August 28, 2023

     AVALANCHE ACTIVITY:

      Sz 2 wet slab, 2023/08/26. Queenstown, NZ.                                                       Flo de Vries Pic

        In bounds Avalanche at Nevados de Chillan. Article below.                          Siamac Sadaat Pic

    Avalanche on Mt Sefton, Mt Cook Area. 2023/08/25. Article and video below. Bailey Nichlos Pic

      Na, (natural avalanche) East face Aoraki. 2023/08/24. NZAA Report below.       Tim Robertson Pic

      Large NA avalanche off Mt Phyllis onto Aida Glacier. PWL, Mt Cook NP. 2023/08/22 NZAA Pic

      WEATHER PAST WEEK:

      Monday August 21, 2023. 12:00 Hrs. +15 Deg C with a 15-30 KPH East wind at 1835 m.

    12:00 Hrs Monday. +22 Deg C! AQHI went from 4 early in the am to 8 at noon! High +25.5 Deg C.

      Tuesday August 22, 2023. 12:00 Hrs. +7 Deg C with a 10-20 KPH SW wind.

     12:00 Hrs Tuesday. +20 Deg C. AQHI at 3!

      Wednesday August 23, 2023. 12:00 Hrs. +4 Deg C with a 15-30 KPH SSW wind at 1835 m.

      12:00 Hrs Wednesday. +13 Deg C. AQHI at 2!

      Thursday August 24, 2023. 12:00 Hrs. +10 deg C with a 5-15 KPH North wind at 1835 m.

     12:00 Hrs Thursday. +20 Deg C. AQHI at 1!

      Friday August 25, 2023. 14:00 Hrs. +14 Deg  C with a 5-10 KPH NW at 1835 m.

      14:00 Hrs Friday. +23 Deg C. AQHI at 4!

     Saturday August 25, 2023. 12:00 Hrs. +14 Deg c with a 5-10 KPH West wind at 1835 m.

     Sunday August 27, 2023. 12:00 Hrs. +19 Deg C with a 5-10 KPH West wind at 1835 m.

      12:00 Hrs Sunday. +28 Deg C. AQHI 4!

Weather Observations for August 28, 2023 taken at 08:00 Hours.

2180 meters     +16, Winds were 20-30KPH ESE--Whistler Peak

1835 meters     +19, Winds were   5-15 KPH ESE--Roundhouse  

1650 meters     +15, 0 mm in 12 Hrs, 0 mm in 24 Hrs.--Pig Alley

1570 meters     +17, 0 mm in 12 Hrs, 0 mm in 24 Hrs. Base--Catskinner

  660 meters     +14, Valley Temp, Max temp Yesterday was +34, 0.0 mm of precip yesterday.

     

     08:00 Hrs, some high thin cloud, smokey skies.

FORECAST:

Sunny above the smoke layer this am, increase in clouds later in the pm. Series of short wave troughs in a mostly Southwesterly flow aloft, over the next few days. Wet Tuesday with periods of light precipitation. Drys out on Wednesday with the chance of some isolated showers later in the pm. Wet Thursday with light/moderate precipitation. Cloudy weather. Dirty ridging for Friday into Saturday. Same pattern for early next week, but that is certainly susceptible to change.. Guesstimates: trace-1 mm by Tuesday am, 5-10 mm by Wednesday am, 2-6 mm by Thursday am, 5-10 mm by Friday am, 0-trace by Saturday am, 0 mm by Sunday am.

     GOES IMAGE this am.

      WINDY IMAGE 2023/08/28. 07:00 HRS.

     Mix of sun and cloud today, above average temps. showers tonight.

      Mix of sun and cloud Monday. Showers expected tonight.

      Southerly flow aloft!

              Broad upper level low,  periods of light rain! Seasonable temps.

      Light precipitation Tuesday.

       Weak short wave trough for Wednesday, mix of sun and cloud. Seasonable temps.

      Dry for most of the day Wednesday. Showers possibly Wednesday night.

        Low bringing more precip for Thursday. Seasonable temps.

      Light rain for Thursday.

      Dirty ridging for Friday. Mix of sun and cloud.

      Dirty ridging Saturday.

      Weak short wave trough Sunday?? Cloudy with showers a possability.

      INFORMATION AND OBSERVATIONS:

      Monday morning. Smoke still thick in the Whistler area. Moisture going East.

      18:00 Hrs Monday. +22 Deg C at 660 m. AQHI went down to 6!

      Windy Image Tuesday 11:00 Hrs. Low entraining some of the moisture left over from Hillary.

      Increase in cloud cover Tuesday 18:00 Hrs.

      08:00 Hrs Wednesday, AQHI at 2. 

     Wednesday 11:00 Hrs. Brief sprinkle!

      Overcast with cloud layer at around 1900 m, 17:00 hrs Wednesday. 

      Some smoke Thursday am. High in Squamish was +28.7 deg C.

     Sunrise Friday 06:16 Hrs. Mix of sun and cloud with more smoke. AQHI 2 at 660 m.

      Windy image 2023/08/25. 06:00 Hrs. Low bringing cloud & smoke to the South Coast.

      08:00 Hrs Saturday. AQHI in the valley is 3.

      07:00 Hrs Sunday. AQHI 1 in the valley. +16 Deg C at 1860 m.

      Same time line Sunday am.

     15:00 Hrs Sunday. AQHI at 6! +18 Deg C at 2180 m.

SHORT CLIPS:

Fresh Tracks: Argentina

Pow Turns: Argentina

Fresh Tracks: New Zealand

Remote Avalanches--PWL: New Zealand

NEW ZEALAND Avalanche Information: 

Pubic Observation 2023/08/24: East face Aoraki

Large Natural Avalanche, Mount Cook NP: NZAA

ARTICLES:

Inbounds avalanche triggered at Chillaen Ski Resort next to chairlift: SnowBrains

Very active avalanche cycle in New Zealand, video from Mt Cook Village: Stuff.co.nz

Large Aoraki/Mt Cook avalanche a warning of backcountry danger: New Zealand

Chilean Ski Resort hit by the "storm of a decade": Santa Rosa Storm

Mountain Safety Collective Backcountry Conditions Report 2023/08/25: Australia

Are avalanches becoming more common in the Alps: Sean Newsom

Future of skiing on Mt Ruapehu remains climate dependant: NZ

In depth look at winter 2023/24, Strong El Nino Event: Severe Weather Europe

Climate records tumble as Switzerland swelters in heatwave: SwissInfo