FOCN45 CWWG 051930
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CST TUESDAY
NOVEMBER 5 2024.

ALERTS IN EFFECT...SNOWFALL WARNINGS FOR THE CYPRESS HILLS AREA.
SNOWFALL WARNING FOR KINNGAIT.

SYNOPTIC OVERVIEW...ALOFT, AN UPPER RIDGE IS OVER THE EASTERN PACIFIC
AND STRETCHES NORTHWARD THROUGH ALASKA. A SHORTWAVE IS OVER MONTANA
AND WEAK RIDGING OVER SASKATCHEWAN. AN UPPER LOW IS OVER EXTREME
NORTHERN MANITOBA WITH A TROUGH SOUTHWARD. A SHORTWAVE IS OVER
EASTERN HUDSON BAY. AN UPPER LOW IS OVER BAFFIN BAY.

AT THE SURFACE, A 998 MB LOW IS OVER SOUTHWESTERN SASKATCHEWAN.
AN OCCLUDED 989 MB LOW IS OVER CENTRAL HUDSON BAY. A RIDGE IS OVER
EASTERN CANADA AND STRETCHES NORTHWARD THROUGH BAFFIN ISLAND.

DISCUSSION...

AB...THE LOW PRESSURE SYSTEM CURRENTLY OVER SOUTHWESTERN SASKATCHEWAN
IS BRINGING LIGHT SNOW TO SOUTHERN ALBERTA. SNOWFALL ACCUMULATIONS
HAVE BEEN LESS THAN EXPECTED, MAINLY IN THE 0-2 CM RANGE. HOWEVER,
STRONG NORTHERLY FLOW OVER THE CYPRESS HILLS WILL ENHANCE SNOWFALL
RATES, AND 10-15 CM IS EXPECTED IN SOUTHEASTERN ALBERTA SOUTH OF THE
TRANS-CANADA HIGHWAY. LOCALIZED AMOUNTS OF UP TO 25 CM ARE POSSIBLE
ON THE NORTH-FACING SLOPES OF THE CYPRESS HILLS BY THE TIME SNOWFALL
ENDS LATE TUESDAY NIGHT. ADDITIONALLY, VISIBILITY WILL BE REDUCED IN
BLOWING SNOW, PARTICULARLY DOWNSLOPE OF THE CYPRESS HILLS NEAR THE US
BORDER WHERE GUSTS OF 70 KM/H ARE POSSIBLE.

A WEAK UPPER TROUGH IS EXPECTED TO PASS THROUGH THE PEACE COUNTRY AND
NORTHERN FOOTILLS EARLY TOMORROW MORNING. A BRIEF LINE OF FLURRIES IS
EXPECTED TO PASS THROUGH THE PEACE COUNTRY AND SOME SHOWERS WITH A
RISK OF FREEZING RAIN WILL PASS THROUGH THE NORTHERN FOOTHILLS.

SK/MB...THE LOW OVER SOUTHWESTERN SASKATCHEWAN WILL CONTINUE TO TRACK
SOUTHEAST TODAY BRINGING SNOWFALL TO SOUTHWESTERN SASKATCHEWAN THIS
MORNING AND CONTINUING INTO THE EVENING. THE HIGHEST ACCUMULATIONS
(ABOUT 15 CM BY TUESDAY EVENING) ARE EXPECTED OVER THE CYPRESS HILLS
IN UPSLOPE NORTHERLY FLOW. WINDS GUSTING UP TO 70 KM/H WILL GIVE POOR
VISIBILITY IN FALLING SNOW/BLOWING SNOW. REMAINDER OF AFFECTED AREA
WILL SEE GENERAL AMOUNTS IN THE 2-5 CM RANGE. THE LOW WILL MOVE INTO
MONTANA THIS EVENING AND BRING SOME SNOW TO SOUTHEASTERN SASKATCHEWAN
THIS EVENING, BUT NO NOTABLE ACCUMULATIONS ARE EXPECTED. CONDITIONS
WILL IMPROVE OVERNIGHT INTO WEDNESDAY MORNING.

NWT...A BAND OF LIGHT SNOW WILL PASS THROUGH THE NWT AND WESTERN
NUNAVUT TOMORROW, MAINLY EAST OF THE MACKENZIE VALLEY. THERE COULD BE
SOME FREEZING DRIZLE TOMORROW MORNING NEAR GREAT SLAVE LAKE, BUT IT
IS CURRENTLY TOO DIFFICULT TO ASSESS AT THIS TIME.

KITIKMEOT AND HIGH ARCIC...WIDESPREAD STRATOCUMULUS WITH A CHANCE OF
FLURRIES - OTHERWISE NIL SIG WX.

KIVALLIQ...STRONG NORTHERLY FLOW ON THE BACKSIDE OF THE HUDSON BAY
LOW WILL IMPACT KIVALLIQ, TODAY, WITH GUSTY NORTHERLY WINDS AND
RESULTING REDUCED VISIBILITIES IN SNOW AND BLOWING SNOW. AS THE LOW
TRACKS TOWARDS DAVIS STRAIT AND WEAKENS, THE GRADIENT WILL SLACKEN
AND WINDS WILL SUBSIDE BY WEDNESDAY MORNING. MILD TEMPERATURES IN THE
REGION WILL LIMIT BLIZZARD POTENTIAL. IN CORAL HARBOUR, DOWNSLOPE
ENHANCEMENT WINDS WITH GUSTS OF 70 TO 80 KM/H ARE EXPECTED TO DEVELOP
THIS MORNING.

BAFFIN...THE HUDSON BAY LOW WILL SPREAD SNOW INTO SOUTHERN BAFFIN,
TODAY. AMOUNTS WILL BE IN THE 2 TO 5 CM RANGE FOR MOST COMMUNITIES,
SAVE FOR KINNGAIT WHERE NORTHEASTERLY ONSHORE FLOW WILL RESULT IN
ENHANCED SNOWFALL OVER THE COMMUNITY, WITH 10-15 CM EXPECTED BY
TUESDAY EVENING.

END/BROWN/ZIOLKOWSKI