Pittsburgh Meteorology 415 – Fall 2012 First Forecast Review

Pittsburgh Population (2010[6]) City 305,704 City 305,704 Density 5,636/sq mi (2,176/km 2 ) Density 5,636/sq mi (2,176/km 2 ) Urban 1,753,136 Urban 1,753,136Urban 1,753,136Urban 1,753,136 Metro 2,356,285 Metro 2,356,285Metro 2,356,285Metro 2,356,285 Population (2010[6]) City 305,704 City 305,704 Density 5,636/sq mi (2,176/km 2 ) Density 5,636/sq mi (2,176/km 2 ) Urban 1,753,136 Urban 1,753,136Urban 1,753,136Urban 1,753,136 Metro 2,356,285 Metro 2,356,285Metro 2,356,285Metro 2,356,285

Pittsburgh - OBS KPIT Z 24006G15KT 7SM -RA SCT026 BKN055 OVC /21 A2990 RMK AO2 RAB46 SLP123 VIS LWR E P T = KPIT Z 24006G15KT 7SM -RA SCT026 BKN055 OVC /21 A2990 RMK AO2 RAB46 SLP123 VIS LWR E P T = KPIT Z 18009KT 150V210 10SM FEW042 SCT065 BKN /21 A2987 RMK AO2 RAE02 SLP112 P0001 T = KPIT Z 18009KT 150V210 10SM FEW042 SCT065 BKN /21 A2987 RMK AO2 RAE02 SLP112 P0001 T = KPIT Z 23006KT 10SM SCT034 BKN075 BKN /20 A2985 RMK AO2 SLP104 T = KPIT Z 23006KT 10SM SCT034 BKN075 BKN /20 A2985 RMK AO2 SLP104 T = KPIT Z 22007KT 10SM BKN036 BKN055 BKN /19 A2984 RMK AO2 SLP T = KPIT Z 22007KT 10SM BKN036 BKN055 BKN /19 A2984 RMK AO2 SLP T = KPIT Z 22007KT 10SM -RA FEW039 BKN055 OVC /21 A2984 RMK AO2 RAB49 SLP102 P0000 T = KPIT Z 22007KT 10SM -RA FEW039 BKN055 OVC /21 A2984 RMK AO2 RAB49 SLP102 P0000 T = KPIT Z 28008KT 5SM R28R/4500VP6000FT -TSRA BR FEW035CB BKN050 OVC080 23/22 A2985 RMK AO2 TSB42 OCNL LTGICCC S-SW TS S- SW MOV E P0007= KPIT Z 28008KT 5SM R28R/4500VP6000FT -TSRA BR FEW035CB BKN050 OVC080 23/22 A2985 RMK AO2 TSB42 OCNL LTGICCC S-SW TS S- SW MOV E P0007= KPIT Z 28008KT 5SM R28R/4500VP6000FT -TSRA BR FEW035CBBKN050 OVC080 23/22 A2985= KPIT Z 28008KT 5SM R28R/4500VP6000FT -TSRA BR FEW035CBBKN050 OVC080 23/22 A2985= KPIT Z 27008KT 3SM -TSRA BR FEW033 CB BKN046 OVC /22 A2986 RMK AO2 TSB42 SLP109 OCNL LTGICCC S-SW TS S-SW MOV E P0008 T = KPIT Z 27008KT 3SM -TSRA BR FEW033 CB BKN046 OVC /22 A2986 RMK AO2 TSB42 SLP109 OCNL LTGICCC S-SW TS S-SW MOV E P0008 T = KPIT Z 25009KT 1 1/2SM +TSRA BR FEW019 BKN033CB OVC050 23/22 A2986 RMK AO2 OCNL LTGICCC SE-SW TS SE-SW MOV E P0001 $= KPIT Z 25009KT 1 1/2SM +TSRA BR FEW019 BKN033CB OVC050 23/22 A2986 RMK AO2 OCNL LTGICCC SE-SW TS SE-SW MOV E P0001 $= KPIT Z 25009KT 1 1/2SM +TSRA BR FEW019 BKN033CB OVC050 23/22A2986= KPIT Z 25009KT 1 1/2SM +TSRA BR FEW019 BKN033CB OVC050 23/22A2986= KPIT Z 27008KT 3SM -TSRA BR FEW033CB BKN046 OVC060 23/22 A2986= KPIT Z 27008KT 3SM -TSRA BR FEW033CB BKN046 OVC060 23/22 A2986= KPIT Z 22003KT 10SM FEW022 BKN046 OVC065 23/21 A2985 RMK AO2 TSE37RAE37 TS MOV E P0025= KPIT Z 22003KT 10SM FEW022 BKN046 OVC065 23/21 A2985 RMK AO2 TSE37RAE37 TS MOV E P0025= KPIT Z 21003KT 9SM BKN046 BKN /22 A2985 RMK AO2 TSE37 RAE37 SLP105 TS MOV E P T = KPIT Z 21003KT 9SM BKN046 BKN /22 A2985 RMK AO2 TSE37 RAE37 SLP105 TS MOV E P T =

Pittsburgh - OBS KPIT Z 21003KT 9SM BKN046 BKN065 23/22 A2985 RMK AO2 TSE37RAE37 SLP105 TS MOV E P T =KPIT Z 21003KT 9SM BKN046 BKN065 23/22 A2985 RMK AO2 TSE37RAE37 SLP105 TS MOV E P T = KPIT Z 23004KT 10SM FEW035 BKN055 OVC095 23/22 A2985 RMK AO2 SLP107 LTG DSNT SE T =KPIT Z 23004KT 10SM FEW035 BKN055 OVC095 23/22 A2985 RMK AO2 SLP107 LTG DSNT SE T = KPIT Z COR 26003KT 10SM BKN046 BKN080 OVC100 23/21 A2987 RMK AO2 SLP112 T =KPIT Z COR 26003KT 10SM BKN046 BKN080 OVC100 23/21 A2987 RMK AO2 SLP112 T = KPIT Z 28004KT 10SM OVC048 23/21 A2986 RMK AO2 SLP108 T =KPIT Z 28004KT 10SM OVC048 23/21 A2986 RMK AO2 SLP108 T = KPIT Z 32006KT 10SM SCT007 OVC044 23/21 A2986 RMK AO2=KPIT Z 32006KT 10SM SCT007 OVC044 23/21 A2986 RMK AO2= KPIT Z 32006KT 10SM SCT007 OVC046 23/21 A2986 RMK AO2 SLP108 T =KPIT Z 32006KT 10SM SCT007 OVC046 23/21 A2986 RMK AO2 SLP108 T = KPIT Z COR 23003KT 8SM BKN007 OVC046 23/21 A2986 RMK AO2 SLP110 T =KPIT Z COR 23003KT 8SM BKN007 OVC046 23/21 A2986 RMK AO2 SLP110 T = KPIT Z 33004KT 9SM OVC009 23/21 A2986 RMK AO2 SLP109 T =KPIT Z 33004KT 9SM OVC009 23/21 A2986 RMK AO2 SLP109 T =

Pittsburgh – surface map

Pittsburgh - satellite

Pittsburgh - radar

Pittsburgh - verifications

Pittsburgh scores

Pittsburgh – lessons learned Front or boundary passage at the time of peak convection in a tropical air mass will lead to a t-storm!Front or boundary passage at the time of peak convection in a tropical air mass will lead to a t-storm! A lifting wave (leftover Isaac) will often entrain drier air as the southwesterly flow increases.A lifting wave (leftover Isaac) will often entrain drier air as the southwesterly flow increases. There is a tendency for convection to consolidate around a primary boundary as dusk approachesThere is a tendency for convection to consolidate around a primary boundary as dusk approaches Consider the likelihood of sunny breaks ahead of a cold front with burgeoning convection – to briefly raise late afternoon temperaturesConsider the likelihood of sunny breaks ahead of a cold front with burgeoning convection – to briefly raise late afternoon temperatures

ClASS VIEW OF A RAIN DELAY AT PNC PARK 74% Indicated a 60% chance or less with half the class saying less than 40% risk – none said >80%! Should the delay occur, the sense was that it was last for minutes – the rain delay was >60 minutes!

Pirates outcome – a winner with a 75 minute rain delay! Rodriguez looked a little shaky early on following a 75-minute rain delay. Jose Altuve singled to lead off the game then stole second. Justin Maxwell walked with two outs, but Jason Castro grounded to short and from there Rodriguez cruised. Houston never got a runner to third over Rodriguez's final six innings.Jose AltuveJustin MaxwellJason Castro