452  
FNUS75 KCYS 032003  
FWSCYS  
 
SPOT FORECAST FOR SIDNEY FIREWORKS...REGION 21 EMA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
203 PM MDT FRI JUL 3 2020  
 
IF CONDITIONS BECOME UN-REPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (307) 772-2227, IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
STORMY CONDITIONS POSSIBLE TO KICK OFF THE EVENING, WITH THE MAIN  
WINDOW OF OPPORTUNITY FOR ISOLATED THUNDERSTORMS BETWEEN 7 AND 10  
PM. WITH A DRY LOWER LAYER IN PLACE, GUSTY AND ERRATIC WINDS TO  
45 MPH ARE A CONCERN, AS IS THE POSSIBILITY OF SMALL HAIL, THOUGH  
THIS IS LESS LIKELY. A LIGHT SHOWER CANNOT BE RULED OUT. SUSTAINED  
WINDS WILL DIMINISH RAPIDLY BETWEEN 8 AND 10 PM.  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. INCREASING CLOUDS AFTER 7 PM MDT.  
CHANCE OF SHOWERS IN THE EVENING BETWEEN 7 PM AND  
MIDNIGHT. ISOLATED THUNDERSTORMS BETWEEN 7 AND 10 PM.  
GUSTY AND ERRATIC WINDS TO 45 MPH, SMALL HAIL AND  
RAIN UP TO TWO TENTHS MAY ACCOMPANY STORMS.  
MIN TEMPERATURE.....AROUND 59. TEMPERATURES WILL RANGE BETWEEN 75 AND  
65 DEGREES OVER THE COURSE OF TONIGHT'S EVENT.  
MAX HUMIDITY........87 PERCENT.  
SURFACE WINDS.......SOUTHEAST WINDS, 10 TO 20 MPH WITH GUSTS TO 30 MPH  
BETWEEN 6 AND 8 PM. WINDS WILL THEN TURN WEST-SOUTHWEST  
AT 7 TO 14 MPH WITH GUSTS TO 20 MPH. WINDS WILL BECOME  
SOUTHWESTERLY 10 MPH OR LESS AFTER MIDNIGHT.  
 
TIME (MDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM  
SKY (%).........61 79 72 46 33 37  
WEATHER COV.....CHANCE CHANCE S CHC  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR NONE NONE NONE  
TSTM COV........CHANCE S CHC S CHC  
TEMP............82 73 69 66 62 59  
RH..............47 57 63 80 87 93  
SURFACE WIND....S 15 W 13 W 8 SW 3 SW 5 S 8  
SURFACE WND GST.21 14  
 

 
FORECASTER...BRAUN  
REQUESTED BY...RON LEAL  
TYPE OF REQUEST...OTHER  
.TAG 2008890.0/CYS  
.DELDT 07/03/20  
.EMAIL REGION21EM@REGION21.NET  
 
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