973  
FNUS71 KPBZ 081337  
FWSPBZ  
 
SPOT FORECAST FOR BUZZARD SWAMP RX...ALLEGHENY N.F.  
NATIONAL WEATHER SERVICE PITTSBURGH PA  
937 AM EDT THU APR 8 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON APRIL 08.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (412) 262-1485, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
RAIN SHOWERS AND ISOLATED THUNDERSTORMS ARE PROMISING AFTER 20Z  
TODAY AS A LOW PRESSURE SYSTEM APPROACHES THE OHIO RIVER VALLEY.  
WINDS WILL LIKELY INCREASE THROUGHOUT WITH DEEP DAYTIME MIXING OF  
STRONG VERTICAL WINDS; GUSTS COULD RANGE 20-25KTS WEST OF THE OHIO  
RIVER/15-20KTS EAST OF THE OHIO RIVER.  
 

 
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 72.  
MIN HUMIDITY........37 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 7 TO 10 MPH. GUSTS UP TO 22 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......4000 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 16 TO 25 MPH INCREASING TO AROUND 26  
MPH LATE IN THE AFTERNOON.  
HAINES INDEX........2 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
LVORI...............1.  
ADI.................53 INCREASING TO 73 IN THE AFTERNOON.  
 
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........21 25 30 26 37 46 31 25  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1  
TEMP............61 65 68 69 71 72 72 72  
RH..............58 51 46 43 39 39 37 37  
20 FT WIND DIR..SE SE SE SE SE SE SE SE  
20 FT WIND SPD..7 7 8 8 9 9 10 10  
20 FT WIND GUST.14 14 14 16 17 17 18 17  
MIX HGT (KFT)...1.5 2.3 2.8 3.2 3.5 3.9 4.0 3.7  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE  
TRANSP WIND SPD.16 20 21 22 23 25 26 26  
LVORI...........1 1 1 1 1 1 1 1  
ADI.............53 53 73 73 73 73 73 73  
HAINES INDEX....2 4 4 4 4 4 4 4  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN  
SHOWERS EARLY IN THE EVENING.  
CHANCE OF PCPN......40 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 49.  
MAX HUMIDITY........79 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 8 TO 10 MPH. GUSTS UP TO 23  
MPH.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 16 TO 24 MPH.  
HAINES INDEX........2 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
LVORI...............2.  
ADI.................27 DECREASING TO 19 AFTER 3 AM.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........23 24 60 63 75 77 82 82 87 82 80 86  
WEATHER COV..... CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW  
TSTM COV........  
CHC OF PCPN (%).0 0 40 40 40 40 40 40 40 40 40 30  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............70 67 63 61 59 57 56 55 54 52 51 50  
RH..............39 43 49 56 60 62 65 65 64 70 75 79  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..10 9 9 8 8 9 9 9 9 9 8 8  
20 FT WIND GUST.14 16 18 18 18 18 18 18 18 17 16 16  
MIX HGT (KFT)...2.6 1.3 0.3 0.3 0.7 1.1 1.0 0.7 0.5 0.5 0.6 0.7  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE SE SE  
TRANSP WIND SPD.23 18 16 18 22 24 24 23 22 21 21 20  
LVORI...........1 2 2 2 2 2 3 3 2 3 3 3  
ADI.............31 31 31 22 22 22 22 22 22 19 19 19  
HAINES INDEX....4 4 3 3 3 3 3 3 2 2 2 2  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING  
MOSTLY SUNNY (35-45 PERCENT). CHANCE OF RAIN  
SHOWERS THROUGH THE DAY. CHANCE OF  
THUNDERSTORMS LATE IN THE AFTERNOON.  
CHANCE OF PCPN......50 PERCENT.  
LAL.................NO TSTMS UNTIL 1400, THEN 1-8 STRIKES.  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........59 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 7 TO 9 MPH. GUSTS UP TO 21 MPH  
EARLY IN THE MORNING. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS LATE IN THE  
AFTERNOON.  
MIXING HEIGHT.......3300 FT AGL.  
TRANSPORT WINDS.....SOUTH 16 TO 18 MPH.  
HAINES INDEX........2 TO 3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
LVORI...............3.  
ADI.................20 INCREASING TO 54.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........86 93 87 88 84 81 74 68 62 54 46 38  
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........ CHC CHC CHC CHC  
CHC OF PCPN (%).50 40 40 30 30 30 20 20 30 30 30 30  
LAL.............1 1 1 1 1 1 1 1 2 2 2 2  
TEMP............50 49 49 51 53 55 58 60 62 63 63 64  
RH..............82 86 90 87 81 78 72 66 61 61 60 59  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..7 8 7 8 8 8 8 8 8 8 8 8  
20 FT WIND GUST.14 14 16 16 17 16 16 17 17 16 14 14  
MIX HGT (KFT)...0.7 0.7 0.8 1.1 1.4 1.8 2.1 2.4 2.7 3.1 3.3 3.2  
TRANSP WIND DIR.SE SE SE S S S S S S S S S  
TRANSP WIND SPD.18 17 17 17 18 18 18 18 18 17 17 16  
LVORI...........3 4 4 3 3 3 1 1 1 1 1 1  
ADI.............20 20 20 34 34 34 42 42 42 54 54 54  
HAINES INDEX....2 2 2 2 2 3 3 3 3 3 3 3  
 

 
FORECASTER...PH  
REQUESTED BY...ROBERT GOULDING  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2108380.0/PBZ  
.DELDT 04/08/21  
.FORMATTERVERSION 1.0.26  
.EMAIL PMACC@FIRENET.GOV  
 
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