393
FXUS65 KCYS 231103
AFDCYS
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
503 AM MDT SAT OCT 23 2021
SHORT TERM
(TODAY AND TONIGHT)
ISSUED AT 301 AM MDT SAT OCT 23 2021
THE NEXT WAVE WILL SWEEP ACROSS THE STATE THIS AFTERNOON AND
EVENING. CLOUDS WILL INCREASE THROUGH THE MORNING, WHICH WILL HOLD
TEMPERATURES DOWN ABOUT 5 DEGREES FROM YESTERDAY'S HIGHS. MOISTURE
WITH THIS TROUGH IS LIMITED, AND THE TROUGH IS MOVING QUICKLY, SO
PRECIPITATION WILL BE BRIEF, AND LIMITED TO THE OVERNIGHT HOURS
TONIGHT. MEASURABLE PRECIP WILL BE LIMITED TO CARBON COUNTY
TONIGHT, WITH A COUPLE INCHES IN THE HIGHER ELEVATIONS AND A
DUSTING FOR THE LOWER ELEVATIONS. WINDS ON SATURDAY WILL ALSO BE
GUSTY, WITH SC WY REACHING 30G50MPH AT TIMES IN THE AFTERNOON.
WINDS WILL DECREASE BEFORE THE MAIN PRECIPITATION BEGINS TO FALL
SATURDAY EVENING.
LONG TERM
(SUNDAY THROUGH FRIDAY)
ISSUED AT 301 AM MDT SAT OCT 23 2021
AFTER THE TROUGH SWEEPS EAST ACROSS THE CENTRAL PLAINS, RIDGING
BUILDS BACK ACROSS THE ROCKIES ON SUNDAY. COOLER NORTHWEST WINDS
WILL AGAIN PICK UP DURING THE DAY, WITH GUSTS APPROACHING 40 TO 45
MPH STILL POSSIBLE FOR PRONE HIGHER ELEVATIONS. TEMPERATURES WILL
BE ABOUT 10 DEGREES COLDER THAN SATURDAY, WITH HIGHS ONLY IN THE
40S AND 50S DURING THE AFTERNOON. MONDAY, THE RIDGE CONTINUES TO
BUILD JUST TO THE EAST, BRINGING STRONG SOUTHWEST FLOW ACROSS THE
REGION. WINDS WILL BE NOTICEABLY HIGHER DURING THE DAY, ESPECIALLY
FOR THE WIND CORRIDOR ACROSS CARBON COUNTY, WITH GUSTS REACHING
50 MPH IN THE AFTERNOON. TUESDAY, THE LONGWAVE TROUGH FINALLY
MOVES ACROSS THE ROCKIES, BRINGING THE NEXT STORM SYSTEM ACROSS
THE REGION. RIGHT NOW, THE TIMING OF THIS SYSTEM REACHES SE WY/NE
PANHANDLE DURING THE DAY, SO ALMOST ALL PRECIP WILL BE A COLD
RAINFALL. COLDER AIR WILL NOT ARRIVE UNTIL AFTER THE TROUGH MOVES
EAST TUESDAY NIGHT, SO ANY CHANGEOVER TO SNOW WILL BE BRIEF,
MAINLY FOR THE MOUNTAIN RANGES IN CARBON COUNTY. WINDS TUESDAY
WILL ALSO BE GUSTY FROM THE WEST, RUNNING 25G40MPH FOR MOST AREAS,
INCLUDING THE I-25 AND I-80 CORRIDORS. FOR THE REMAINDER OF THE
WEEK, GRADIENT MEASUREMENTS WILL REMAIN TIGHT ACROSS THE STATE,
KEEPING GUSTY WINDS GOING. WEDNESDAY LOOKS TO BE THE HIGHEST WIND
DAY, POSSIBLY REACHING WARNING CRITERIA ALONG THE I-80 CORRIDOR
WEST OF CHEYENNE, IMPACTING ALL OF SOUTHERN WY.
AVIATION
(FOR THE 12Z TAFS THROUGH 12Z SUNDAY MORNING)
ISSUED AT 500 AM MDT SAT OCT 23 2021
GENERALLY LIGHT WINDS THIS MORNING WITH SOME HIGH CLOUDS MOVING
ACROSS SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE. WIND GUSTS 25
TO 30 KNOTS EXPECTED AT KLAR BETWEEN 19Z AND 23Z AND AT KRWL
BETWEEN 16Z AND 5Z.
HAZARDS/WEATHER TREND: VFR CONDITIONS ARE EXPECTED FOR MOST AREAS
THROUGH THE TAF PERIOD. RAIN SHOWERS ARE POSSIBLE AT KRWL AND
KLAR AFTER 00Z WITH VFR TO MVFR CEILINGS BEHIND THE SHOWERS.
CYS WATCHES/WARNINGS/ADVISORIES
WY...NONE.
NE...NONE.
SHORT TERM...JS
LONG TERM...JS
AVIATION...LK
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