The Weather Forecasting Forum

If you save the results over time this script shows increase in temp gradient (frontogenesis) and areas to keep an eye on. Blue fill is convergence. latest front product is overlayed.


#surface frontogenesis
ERASE
ANALYZE,stor=1 SMLC=1:1000000 STOR=1 DVRG WIND
#Store ZERO in No 2 (i.e. TEMP/1000)
analyze,STOR=2 SDVC=1:1000

ANALYZE,OVER FILL COLOR=000:235:255 GRTN=0 SDIF=2:1
ANALYZE,OVER FILL COLOR=000:179:255 GRTN=5 SDIF=2:1
ANALYZE,OVER FILL COLOR=000:105:255 GRTN=10 SDIF=2:1
ANALYZE,OVER FILL COLOR=000:045:255 GRTN=15 SDIF=2:1
ANALYZE,OVER FILL COLOR=082:000:255 GRTN=20 SDIF=2:1
ANALYZE,OVER FILL COLOR=179:000:255 GRTN=25 SDIF=2:1
ANALYZE,OVER FILL COLOR=250:000:255 GRTN=30 SDIF=2:1
analyze,cont cint=2 dash color=255:0:0 degf temp
product,wxp,Fronts
Stamp
P19

250-850mb dvrg difference,850 convrg, and 250 dvrg:

#250-850 diff dvrg (fill), 850 converg (red),250 diverg (purple)
erase
analyze,over fill color=0:255:0 grtn=30 fill color=175:255:175 grtn=15 sdif=2:3 stor=3 SMLC=1:1000000 STOR=1 DVRG SMTH WIND h850 stor==2 SMLC=1:1000000 STOR=1 DVRG SMTH WIND h250
analyze,cont cint=10 color=200:0:200 line=2 grtn=10 SMLC=1:1000000 STOR=1 DVRG SMTH WIND h250
analyze,cont cint=10 color=255:0:0 dash grtn=10 SMLC=1:-1000000 STOR=1 DVRG SMTH WIND h850
stamp

P19