352
FXUS63 KGRB 310310
AFDGRB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
1010 PM CDT SAT MAY 30 2026
UPDATED AVIATION PORTION FOR 06Z TAF ISSUANCE
KEY MESSAGES
- DRY WEATHER PREVAILS THROUGH THE MIDDLE OF NEXT WEEK.
- AFTER TODAY, TEMPERATURES RISING AND REMAINING ABOVE NORMAL
THROUGH NEXT WEEK. HIGHS MAINLY IN THE 80S.
- ELEVATED FIRE WEATHER CONDITIONS INTO NEXT WEEK DUE TO LOW
RELATIVE HUMIDITY AND ABOVE NORMAL TEMPERATURES. NEAR-CRITICAL
CONDITIONS MAY DEVELOP LATER NEXT WEEK WHEN WINDS INCREASE.
DISCUSSION
ISSUED AT 215 PM CDT SAT MAY 30 2026
PRECIPITATION CHANCES...A STRONG RIDGE OF HIGH PRESSURE IS EXPECTED
TO DOMINATE THE WEATHER PATTERN THROUGH AT LEAST THE MIDDLE OF NEXT
WEEK, KEEPING CONDITIONS DRY. THE ONLY MINOR INTRUSION THAT SOME
GUIDANCE IS HINTING AT IS A SUBTLE SHIFT OF THE PERSISTENT
STATIONARY MOISTURE TO THE SOUTHWEST OF THE REGION MOVING INTO THE
SOUTHWEST PORTION OF THE FORECAST AREA SUNDAY NIGHT INTO MONDAY. IF
THIS OCCURS, A FEW LIGHT RAIN SHOWERS OR SPRINKLES MAY OCCUR, BUT
DRY AIR FROM THE PREVAILING HIGH PRESSURE SHOULD KEEP CONDITIONS
DRY. BY WEDNESDAY NIGHT, THE UPPER-LEVEL RIDGE WILL FLATTEN AND THE
HIGH PRESSURE WILL SLIDE EASTWARD AS A SHORTWAVE TROUGH APPROACHES
FROM THE NORTHERN PLAINS. BEGINNING THURSDAY, THE PATTERN BECOMES
UNSETTLED WITH MULTIPLE CHANCES FOR SHOWERS AND THUNDERSTORMS
THROUGH NEXT WEEKEND. SINCE THERE ARE STILL SOME TIMING ISSUES, IT
IS TOO EARLY TO DETERMINE ANY SEVERE POTENTIAL AT THIS TIME.
TEMPERATURES...AFTER TODAY'S SEASONABLE TEMPERATURES, EXPECT HIGH
TEMPERATURES TO BE ABOUT 10 DEGREES ABOVE NORMAL FROM SUNDAY THROUGH
AT LEAST WEDNESDAY, RANGING FROM THE UPPER 70S TO MID 80S EACH DAY.
TEMPERATURES WILL BE SLIGHTLY COOLER ALONG THE LAKESHORE AS WELL.
WITH DEW POINTS AT TOLERABLE LEVELS DURING THIS TIME, THE HEAT RISK
IS LOW (LEVEL 1 OUT OF 4), WHICH PRIMARILY IMPACTS THOSE WHO ARE
EXTREMELY SENSITIVE TO HEAT AND WITHOUT COOLING/HYDRATION. OVERNIGHT
LOWS THROUGH TUESDAY NIGHT WILL BE NEAR OR SLIGHTLY ABOVE NORMAL,
RANGING FROM THE MID 40S TO MID 50S.
AVIATION
FOR 06Z TAF ISSUANCE
ISSUED AT 1010 PM CDT SAT MAY 30 2026
VFR CONDITIONS WILL PREVAIL THROUGH THE TAF PERIOD AS HIGH CLOUDS
CONTINUE TO FILTER OVER THE REGION. WINDS WILL REMAIN LIGHT AND
VARIABLE TONIGHT, THEN BECOME SOUTHEAST-SOUTH ON SUNDAY MAINLY UNDER
7 KTS. A LAKE BREEZE IS LIKELY TO DEVELOP SUNDAY AFTERNOON WHICH
WOULD TURN WINDS EASTERLY ALONG AND NEAR THE LAKE MICHIGAN SHORELINE
(MTW) WITH GUSTS OF UP TO 15KTS AS THE LAKE BOUNDARY PUSHES INLAND.
THERE IS A LOW-END (10%) FOR SCATTERED SHOWERS ACROSS WESTERN WI
WEST OF AN EAU TO MSN LINE, EARLY MONDAY MORNING, THAT COULD SHIFT
EAST INTO PARTS OF CENTRAL WI, HOWEVER, ANY AVIATION IMPACTS SHOULD
BE MINIMAL.
FIRE WEATHER
ISSUED AT 215 PM CDT SAT MAY 30 2026
UNTIL A WIDESPREAD WETTING RAIN OCCURS, ELEVATED FIRE WEATHER
CONDITIONS WILL CONTINUE THROUGH MUCH OF NEXT WEEK AS AFTERNOON
RHS WILL ROUGHLY BE 30% OR LOWER WITH TEMPERATURES IN THE
70S/80S. DESPITE GREEN UP PROGRESSING AND/OR COMPLETING, FUEL
INPUT FROM FIRE PARTNERS POINTS TO CONCERN WHERE RECENT DRYNESS
PERSISTS, ANY DAYS WITH INCREASING WINDS COULD ALLOW THE FIRE
WEATHER POTENTIAL TO RISE TO NEAR-CRITICAL. THE BEST POTENTIAL
COULD BE THE MIDDLE TO LATE PART OF NEXT WEEK AS THE LOWER RH
VALUES COULD COINCIDE WITH INCREASING GRADIENT WINDS AS THE
PREVAILING HIGH PRESSURE EXITS EAST AND A SHORTWAVE/TROUGH
APPROACHES FROM THE NORTHERN PLAINS.
GRB WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION.....KRUK
AVIATION.......GK
FIRE WEATHER...KRUK
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