FPCN15 CWWG 191045 FORECASTS FOR SOUTHERN ALBERTA AND THE MOUNTAIN PARKS ISSUED BY ENVIRONMENT CANADA AT 5:00 A.M. MDT MONDAY 19 MAY 2025 FOR TODAY AND TUESDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. MDT. --------------------------------------------------------------------- MAJOR REFERENCE ELEVATIONS: BANFF: 1384 METRES. LAKE LOUISE: 1750 METRES. HIGHWAY 93 - BOW SUMMIT: 2068 METRES. HIGHWAY 93 - SUNWAPTA PASS: 2034 METRES. COLUMBIA ICEFIELDS VISITORS CENTRE: 2006 METRES. JASPER: 1061 METRES. CANMORE: 1350 METRES. HWY 40 - HIGHWOOD PASS: 2206 METRES. PINCHER CREEK: 1030 METRES. WATERTON: 1280 METRES. CROWSNEST PASS: 1300 METRES. --------------------------------------------------------------------- CITY OF CALGARY. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING AND THIS AFTERNOON. RISK OF A THUNDERSTORM THIS AFTERNOON. FOG PATCHES THIS MORNING. WIND BECOMING SOUTHWEST 20 KM/H THIS AFTERNOON. HIGH 16. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING WITH RISK OF A THUNDERSTORM. CLEARING BEFORE MORNING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW 7. TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. HIGH 16. UV INDEX 6 OR HIGH. OKOTOKS - HIGH RIVER - CLARESHOLM. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING AND THIS AFTERNOON. RISK OF A THUNDERSTORM THIS AFTERNOON. FOG PATCHES EARLY THIS MORNING. WIND BECOMING SOUTHWEST 20 KM/H THIS AFTERNOON. HIGH 17. UV INDEX 6 OR HIGH. TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING WITH RISK OF A THUNDERSTORM. CLEARING BEFORE MORNING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 4 WITH RISK OF FROST. TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. HIGH 15. UV INDEX 6 OR HIGH. AIRDRIE - COCHRANE - OLDS - SUNDRE. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING. 40 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A THUNDERSTORM THIS AFTERNOON. FOG PATCHES EARLY THIS MORNING. HIGH 15. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING WITH RISK OF A THUNDERSTORM. CLEARING BEFORE MORNING. LOW PLUS 2 WITH RISK OF FROST. TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. HIGH 13. UV INDEX 6 OR HIGH. DRUMHELLER - THREE HILLS. TODAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING. CLEARING THIS MORNING. HIGH 17. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING WITH RISK OF A THUNDERSTORM. LOW 7. TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 17. UV INDEX 6 OR HIGH. BROOKS - STRATHMORE - VULCAN. TODAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING. CLEARING THIS MORNING. WIND BECOMING SOUTHWEST 20 KM/H THIS AFTERNOON. HIGH 18. UV INDEX 6 OR HIGH. TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW 6. TUESDAY..A MIX OF SUN AND CLOUD. 60 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND NORTHWEST 20 KM/H BECOMING LIGHT NEAR NOON. HIGH 16. UV INDEX 6 OR HIGH. KANANASKIS - CANMORE. TODAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS AFTERNOON. FOG PATCHES EARLY THIS MORNING. HIGH 14. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING. CLEARING BEFORE MORNING. LOW PLUS 3. TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. HIGH 12. UV INDEX 5 OR MODERATE. BANFF NATIONAL PARK HIGHWAY 93 - LAKE LOUISE TO SASKATCHEWAN RIVER CROSSING. TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. HIGH 12. UV INDEX 5 OR MODERATE. TONIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS THIS EVENING. CLEARING OVERNIGHT. LOW PLUS 1. TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. RISK OF A THUNDERSTORM IN THE AFTERNOON. SNOW LEVEL 2100 METRES. HIGH 10. UV INDEX 5 OR MODERATE. HIGHWAY 93 - JASPER TO SASKATCHEWAN RIVER CROSSING JASPER NATIONAL PARK. TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. SNOW LEVEL 2100 METRES. HIGH 13. UV INDEX 4 OR MODERATE. TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. SNOW LEVEL LOWERING TO 1600 METRES OVERNIGHT. LOW PLUS 3. TUESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. SNOW LEVEL 1600 METRES RISING TO 2200 METRES IN THE AFTERNOON. HIGH 14. UV INDEX 5 OR MODERATE. NORDEGG - FORESTRY TRUNK ROAD HIGHWAY 734. TODAY..A MIX OF SUN AND CLOUD. 60 PERCENT CHANCE OF SHOWERS THIS AFTERNOON WITH RISK OF A THUNDERSTORM. FOG PATCHES DISSIPATING THIS MORNING. HIGH 13. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING WITH RISK OF A THUNDERSTORM. CLEARING BEFORE MORNING. LOW ZERO. TUESDAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 11. UV INDEX 5 OR MODERATE. ROCKY MOUNTAIN HOUSE - CAROLINE. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON WITH RISK OF A THUNDERSTORM. FOG PATCHES DISSIPATING THIS MORNING. HIGH 15. UV INDEX 6 OR HIGH. TONIGHT..CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING WITH RISK OF A THUNDERSTORM. LOW PLUS 3 WITH RISK OF FROST. TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. HIGH 15. UV INDEX 5 OR MODERATE. RED DEER - PONOKA - INNISFAIL - STETTLER. TODAY..CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. WIND BECOMING SOUTHEAST 20 KM/H THIS AFTERNOON. HIGH 15. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS EVENING. WIND SOUTHEAST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 5. TUESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. HIGH 16. UV INDEX 6 OR HIGH. HANNA - CORONATION - OYEN. TODAY..PERIODS OF RAIN ENDING THIS MORNING THEN CLOUDY. WIND BECOMING SOUTHEAST 20 KM/H NEAR NOON. HIGH 14. UV INDEX 5 OR MODERATE. TONIGHT..PARTLY CLOUDY. BECOMING CLOUDY AFTER MIDNIGHT. WIND SOUTHEAST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW 6. TUESDAY..CLOUDY. HIGH 14. UV INDEX 4 OR MODERATE. MEDICINE HAT - BOW ISLAND - SUFFIELD. TODAY..CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. HIGH 17. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING. WIND SOUTH 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW 7. TUESDAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING NORTHWEST 20 KM/H NEAR NOON. HIGH 18. UV INDEX 6 OR HIGH. CYPRESS HILLS PROVINCIAL PARK - FOREMOST. TODAY..CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. HIGH 13. UV INDEX 6 OR HIGH. TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING. LOW PLUS 4. TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSHOWER. WIND BECOMING WEST 20 KM/H IN THE MORNING. HIGH 16. UV INDEX 6 OR HIGH. LETHBRIDGE - TABER - MILK RIVER. TODAY..CLEARING EARLY THIS MORNING. FOG PATCHES EARLY THIS MORNING. WIND BECOMING WEST 30 KM/H THIS MORNING. HIGH 16. UV INDEX 6 OR HIGH. TONIGHT..PARTLY CLOUDY. WIND WEST 30 KM/H. LOW PLUS 5. TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSHOWER. WIND WEST 30 KM/H. HIGH 16. UV INDEX 6 OR HIGH. CARDSTON - FORT MACLEOD - MAGRATH. TODAY..CLEARING EARLY THIS MORNING. FOG PATCHES EARLY THIS MORNING. WIND BECOMING WEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 15. UV INDEX 6 OR HIGH. TONIGHT..PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT THIS EVENING. LOW PLUS 3 WITH RISK OF FROST. TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING WEST 30 KM/H IN THE MORNING. HIGH 14. UV INDEX 6 OR HIGH. CROWSNEST PASS - PINCHER CREEK - WATERTON LAKES NAT. PARK. TODAY..MAINLY SUNNY. FOG PATCHES DISSIPATING THIS MORNING. WIND WEST 20 KM/H INCREASING TO 40 GUSTING TO 60 THIS MORNING. HIGH 13. UV INDEX 6 OR HIGH. TONIGHT..PARTLY CLOUDY. WIND WEST 40 KM/H GUSTING TO 60. LOW PLUS 5. TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND WEST 40 KM/H GUSTING TO 60. HIGH 12. UV INDEX 6 OR HIGH. END