Soaring Forecast - NWS Twin Cities

Soaring Forecast for the Twin Cities Area              
              Prepared at 12:30 GMT Thu Sep 19 2019                              
                                                                   
Height          Wind          Wind           Temp           Soaring
(ft AGL)        Direction     Speed(kts)     (Deg C)        Index  
3000            035           06             17             -1.0
5000            305           12             15              2.5
7000            275           20             11              6.0
 
Temperature needed for lift to 3000 ft agl (Trigger Temp)..81 
 
Time at which trigger temperature will be reached..........2 pm
 
Maximum Temperature for the day............................83 Deg F
 
Maximum altitude of thermals...............................4400 (ft agl)
 
Height where cumulus will form.............................3600 (ft agl)
 
Base of cumulus during the afternoon.......................4300 (ft agl)
 
Total Sky Cover in Eighths (Oktas) (11 AM to 4 PM).........4
 
Implications of specific soaring indices:
-4 or Less............Excellent
-3....................Good
-2 or -1..............Fair
Zero or Greater.......Poor
 
Forecast is based on Upper Air Data collected
at Chanhassen, Minnesota. Elevation 943 feet.
 
 
 
To: Princeton FSS, FAX, (763) 389-7143  Voice, (800) 642-6505
From: National Weather Service Chanhassen, Voice (952) 361-6671