266
FXUS63 KBIS 280554
AFDBIS
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
1254 AM CDT THU MAY 28 2026
KEY MESSAGES
- CRITICAL FIRE WEATHER CONDITIONS IN FAR WESTERN NORTH DAKOTA
AGAIN ON THURSDAY, WITH NEAR-CRITICAL ACROSS THE REST OF
WESTERN AND MUCH OF CENTRAL NORTH DAKOTA.
- HIGH TEMPERATURES IN THE UPPER 80S TO UPPER 90S AGAIN ON
THURSDAY, THEN A SLIGHT COOLING TREND THROUGH THE WEEKEND.
- DRY FOR MOST THROUGH FRIDAY, THEN MEDIUM TO HIGH CHANCES FOR
SHOWERS AND THUNDERSTORMS THIS WEEKEND.
UPDATE
ISSUED AT 1252 AM CDT THU MAY 28 2026
QUIET WEATHER CONTINUES WITH NO CHANGES NEEDED AT THIS TIME.
UPDATE
ISSUED AT 1030 PM CDT WED MAY 27 2026
NO MAJOR CHANGES ARE NEEDED FOR THIS UPDATE AS QUIET WEATHER
PREVAILS UNDER DEEP LAYER RIDGING. CURRENT CONDITIONS AND
TRENDS WERE BLENDED INTO THE FORECAST.
UPDATE
ISSUED AT 620 PM CDT WED MAY 27 2026
QUIET WEATHER IS FOUND ACROSS WESTERN AND CENTRAL NORTH DAKOTA
AT THE TIME OF THIS EARLY EVENING UPDATE. WINDY CONDITIONS
PERSIST ACROSS PORTIONS THE FAR WEST AT THIS TIME, THOUGH ARE
EXPECTED TO SOMEWHAT DIMINISH OVER THE NEXT FEW HOURS. NO MAJOR
ADJUSTMENTS TO THE FORECAST WERE PERFORMED, AS IT REMAINS IN
GOOD SHAPE.
DISCUSSION
ISSUED AT 255 PM CDT WED MAY 27 2026
CURRENTLY AN UPPER LEVEL HIGH IS LOCATED OVER THE EASTERN
DAKOTAS AND WESTERN MINNESOTA. A LARGE UPPER LEVEL LOW STILL
SITS OVER NORTHERN CALIFORNIA, BUT HAS SLIDE SLIGHTLY EAST FROM
YESTERDAY. AT THE SURFACE YESTERDAY'S STATIONARY FRONT LAYS
WEST TO EAST ACROSS SOUTHERN NORTH DAKOTA. CRITICAL FIRE WEATHER
CONDITIONS ARE CURRENTLY PRESENT ACROSS FAR WESTERN NORTH
DAKOTA, HENCE THE RED FLAG WARNING CURRENTLY IN PLACE. NEAR-
CRITICAL FIRE WEATHER CONDITIONS EXIST ELSEWHERE IN THE FORECAST
AREA WITH LOW RELATIVE HUMIDITIES AND BREEZY SOUTHEAST WINDS.
WITH THIS UPPER LEVEL HIGH STICKING AROUND THROUGH FRIDAY, THIS
PATTERN OF HOT, DRY, AND VERY WINDY WEATHER WILL CONTINUE.
THURSDAY MORE CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR IN THE
SAME FAR WESTERN ND COUNTIES AS TODAY. ANOTHER RED FLAG WARNING
HAS BEEN ISSUED FOR THURSDAY AFTERNOON AND EVENING, AND AGAIN,
NEAR-CRITICAL CONDITIONS ELSEWHERE IN THE COUNTY WARNING AREA.
THURSDAY WILL BE THE WARMEST DAY OF THE WEEK WITH HIGHS IN THE
NORTHWEST AND NORTH CENTRAL NEARING 100 DEGREES. THIS WILL LEAD
TO WIDESPREAD HUMIDITIES 15 TO 20 PERCENT. WINDS WILL BE FROM
THE SOUTH GUSTING UP TO 45 MPH, ESPECIALLY IN THE FAR WEST. A
SIMILAR PATTERN IS EXPECTED FRIDAY AS WELL, BUT SHIFTED TO THE
NORTH AND EAST SLIGHTLY. A RED FLAG WARNING MAY BE NEEDED AGAIN
ACROSS THE NORTHWEST FOR FRIDAY AFTERNOON.
FRIDAY THE LARGE UPPER LOW IN CALIFORNIA WILL START IT'S JOURNEY
EAST ACROSS THE ROCKIES. LEADING TO DIFFLUENT FLOW ACROSS THE
NORTHERN PLAINS. THEREFOR DAILY CHANCES FOR SHOWERS AND
THUNDERSTORMS WILL BE PRESENT THROUGH THE WEEKEND. THIS WILL
ALSO BRING SLIGHTLY COOLER TEMPERATURES, POSSIBLY IN THE 70S
AND 80S, BUT ALSO VERY STRONG SOUTH WINDS FROM THE LOW PRESSURE
GRADIENT. AFTER THIS WEEKEND THAT LOW LOOKS TO RETROGRADE BACK
TO THE NORTHWEST, CONTINUING OUR SOUTHWEST FLOW AND DAILY RAIN
CHANCES NEXT WEEK.
AVIATION /06Z TAFS THROUGH 06Z FRIDAY/
ISSUED AT 1252 AM CDT THU MAY 28 2026
VFR CONDITIONS ARE EXPECTED THROUGH THE FORECAST PERIOD. SOUTH
TO SOUTHEASTERLY WINDS WILL BE ON THE INCREASE TODAY, STRONGEST
OVER FAR WESTERN NORTH DAKOTA.
BIS WATCHES/WARNINGS/ADVISORIES
RED FLAG WARNING FROM 11 AM CDT /10 AM MDT/ THIS MORNING TO 10
PM CDT /9 PM MDT/ THIS EVENING FOR NDZ001-009-017-031-032-040-
043.
UPDATE...JJS
DISCUSSION...SMITH
AVIATION...JJS
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