601  
FXUS63 KGRB 191123  
AFDGRB  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GREEN BAY WI  
623 AM CDT TUE AUG 19 2025  
 
UPDATED AVIATION PORTION FOR 12Z TAF ISSUANCE  
   
KEY MESSAGES
 
 
- ISOLATED SHOWERS ARE POSSIBLE TODAY, WITH SHOWERS POSSIBLE ALONG  
THE LAKESHORE TONIGHT AND WEDNESDAY. THE REST OF THE WEEK WILL  
BE DRY WITH THE NEXT CHANCE FOR SHOWERS AND THUNDERSTORMS FRIDAY  
INTO FRIDAY NIGHT.  
 
- TEMPERATURES WILL BE AROUND NORMAL FOR MUCH OF THE UPCOMING  
WEEK, WITH THE POTENTIAL FOR WELL BELOW NORMAL TEMPERATURES LATE  
IN THE WEEKEND INTO EARLY NEXT WEEK.  
 

 
   
DISCUSSION
 
 
ISSUED AT 230 AM CDT TUE AUG 19 2025  
 
PATCHY FOG THIS MORNING WILL DISSIPATE SHORTLY AFTER SUNRISE.  
CYCLONIC FLOW AND WEAK COLD AIR ADVECTION COULD KEEP SOME DRIZZLE  
OR LIGHT SHOWERS AT TIMES ACROSS NORTHERN WISCONSIN FOR MUCH OF  
THE DAY. A WEAK MID LEVEL SHORTWAVE COULD PRODUCE SOME ISOLATED  
SHOWERS THIS AFTERNOON DURING PEAK HEATING ACROSS THE REST OF THE  
REGION. AN AREA OF CONVERGENCE ALONG THE LAKESHORE THIS EVENING  
COULD PRODUCE CONTINUED LIGHT SHOWERS ACROSS EAST-CENTRAL AND  
NORTHEAST WISCONSIN. THIS AREA OF CONVERGENCE WILL REDEVELOP LATE  
TONIGHT INTO WEDNESDAY, WITH LIGHT SHOWERS POSSIBLE NEAR THE  
LAKESHORE.  
 
HIGH PRESSURE WILL THEN BUILD IN ACROSS THE REGION WEDNESDAY  
NIGHT, KEEPING THE REGION DRY THROUGH THURSDAY NIGHT. A COLD FRONT  
WILL BRING A CHANCE FOR SHOWERS AND THUNDERSTORMS TO THE REGION  
FRIDAY AND FRIDAY NIGHT. HIGH PRESSURE BUILDING IN BEHIND THE  
DEPARTING COLD FRONT WILL BRING ANOTHER DRY PERIOD TO THE REGION  
NEXT WEEKEND INTO EARLY NEXT WEEK.  
 
TEMPERATURES WILL BE AROUND NORMAL FOR THIS TIME OF YEAR THROUGH  
MUCH OF THE UPCOMING WEEK, WITH THE POSSIBILITY OF WELL BELOW  
NORMAL TEMPERATURES (10 DEGREES BELOW NORMAL) ON THE BACK END OF  
THE WEEKEND AND INTO EARLY NEXT WEEK.  
 

 
   
AVIATION
 
FOR 12Z TAF ISSUANCE  
ISSUED AT 616 AM CDT TUE AUG 19 2025  
 
IFR/LIFR CIGS PREVAILED REGIONWIDE EARLY THIS MORNING WITH VSBYS  
RANGING FROM VFR TO IFR. FOG HAS NOT BECOME AS UBIQUITOUS AS  
EXPECTED, WITH NONE OR VERY FEW LOCATIONS BELOW 1 SM. CONDITIONS  
WILL STEADILY IMPROVE THROUGHOUT THE MORNING, WITH MOST LOCATIONS  
RETURNING TO VFR BY MID AFTERNOON. LOW STRATUS AND PATCHY FOG MAY  
RETURN TONIGHT, ESPECIALLY ACROSS NORTHERN WISCONSIN. ISOLATED  
SHOWERS/DRIZZLE WILL BE POSSIBLE AT TIMES, BUT NOT HIGH ENOUGH  
CONFIDENCE TO INCLUDE AT ANY OF THE TAF SITES.  
 

 
   
GRB WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  
 

 
 

 
 
DISCUSSION.....KURIMSKI  
AVIATION.......KURIMSKI  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WI Page Main Text Page