Pro 1 Avy Cert

NO (precip)

No precipitation data code

T

HN24< 1cm Data Code

S-1

snowfall < 1 cm/hr Data Code

S1

Snowfall ~ 1 cm/hr

S2

Snowfall ~ 2 cm/hr

GP

graupel/hail Data Code

RS

mixed rain/snow Data Code

ZR

Freezing rain Data Code

RV

V. Light rain; mist Data Code

RL

Light rain: <2.5mm/hr

RM

Moderate rain: </=7.5mm/hr data code

RH

Heavy rain: >7.5mm/hr data code

HS

height of snowpack data code

HN

Height of new snow layer data code

HN24

24hr accumulation data code

HST

Storm total data code

H2D

twice per day data code

HSB

shoot/control interval data code

HIN

set interval Data Code

HIT

Intermittent interval data code

SWE

Snow water equivalent data code

HN24W

Water equivalent of 24hr accumulation data code

VF(x,xxx - x,xxx)

Valley Fog data code

NO (blowing snow)

No snow transport data code

PREV (blowing snow)

Previous but not currently blowing snow data code

L or M (blowing snow)

Light or moderate blowing snow data code

I (blowing snow)

Intense blowing snow data code

U (blowing snow)

Not observed/not possible to observe blowing snow data code

F (hardness)

Fist hardness data code

4F (hardness)

4 finger hardness data code

1F (hardness)

1 finger hardness data code

P (hardness)

Pencil eraser hardness data code

K (hardness)

Knife hard data code

I (hardness)

Ice hard data code

CT

Compression test data code

DT

Deep tap test data code

ECT

Extended column test data code

PF

Foot penetration data code

L#

Lemon count data code

PST

Propagation saw test data code

RB

Rutschblock test data code

Q

Shear quality data code

ST

Shovel shear test data code

PS

Ski penetration data code

SB

Stuffblock test data code

T20

Temp. at 20cm depth data code

Ts

Temp. at snow surface data code

SCN

Slope cut no result data code

SCW

Slope cut whumpfing data code

SCC

Slope cut shooting cracks data code

SCS

Slope cut slab release (note D size)

SCL

Slope cut point/loose release data code

D (water content)

dry: poor snowball (0%) data code

M (water content)

Moist: soft snowball (<3%) data code

W (water content)

Wet: hard snowball (</= 8%) data code

V (water content)

V. wet: soaked gloves (</=15%) data code

S (water content)

Slush (>15%) data code

H (snow profile header)

Depth of snow pit data code

F (snow profile header)

Grain form snow pit data code

E (snow profile header)

Grain size snow pit data code

Rime modifier data code

Ice grain type data code

Melt/freeze crust grain type data code

Melt form grain type data code

Surface hoar grain type data code

Depth hoar grain type data code

Mixed grain type data code

Facet grain type data code

Round grain type data code

Graupel/hail grain type data code

Decomposed grain type data code

New snow grain type data code

1. Clear; no clouds

2. Few; < ¼ covered

3. Scattered; < ½ covered

4. Broken; > ½ covered

5. Overcast; fully covered

6. Obscured; sky not visible

1. Slope angle snow profile data code (phi)

2. Snow density snow profile data code (rho)

3. Liquid water content snow profile data code (theta)

(-) no parenthesis, used before sky cover symbol

This is to show the sky cover symbol is referencing thin clouds, not opaque sky cover.

A/B/TL

Above/below/treeline data code

“-“ or N/O

Not observed data code

Runout (alpha) angle data code

G (pit book header)

Wing gust snow profile data code

Type, trigger, cause (optional), Rsize, Dsize, bedsurface (optional)

The standard way to build a code for an avalanche that has run.

C (avalanche type)

Cornice fall data code

L (avalanche type)

Dry loose avalanche data code

HS (avalanche type)

Hard slab avalanche data code

I (avalanche type)

Ice fall avalanche data code

R (avalanche type)

Roof avalanche data code

SF (avalanche type)

Slush flow avalanche data code

SS (avalanche type)

Soft slab avalanche data code

U (avalanche type)

Unknown avalanche type data code

WL (avalanche type)

Wet loose avalanche data code

WS (avalanche type)

Wet slab avalanche data code

C (N avalanche trigger)

Cornice triggered avalanche data code

E (N avalanche trigger)

Earthquake triggered avalanche data code

I (N avalanche trigger)

Ice fall triggered avalanche data code

L (N avalanche trigger)

Loose avalanche triggered avalanche data code

R (N avalanche trigger)

Rockfall triggered avalanche data code

S (N avalanche trigger)

Slab avalanche triggered avalanche data code

N + (avalanche trigger data code)

Denotes type of trigger is natural

A + (avalanche trigger data code)

Denotes type of trigger is artificial

c (avalanche cause)

avalanche caused in a controlled manner data code

r (avalanche cause)

avalanche caused remotely data code