http://www.lineameteo.it/viewtopic.php?f=11&t=9877&p=240449#p240449
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snow4ever
Mar 31 Gen, 2012 01:12

Re: 31 Gennaio 2012 - Osservazioni Meteo
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sera (notte) gente!! speriamo che tutto vada per il meglio, non so che altro dirvi...attualmente la t è sugli 0°C, dato assai confortante, così come la neve al piano in Francia con una -2 segnalata dal grandissimo e attentissimo andrea ;)
vi posto, giusto per curiosità, il meteogramma per pg (zona strozzacapponi, quindi leggermente a sud-ovest rispetto al capoluogo):

GFS
 Latitude: 43.04 Longitude:  12.19 
 DATA INITIAL TIME: 30 JAN 2012 18Z
 CALCULATION STARTED AT: 30 JAN 2012 18Z
 HOURS OF CALCULATION:          192

FIELD  MSL PRESSURE   TEMPERATURE   DEW POINT       TEMPERATURE    THICKNESS      HEIGHT         PRECIPITATION 
LEVEL                     2M             2M           850 MB         500 MB         500 MB                
UNITS      HPA            DEGC            DEGC          DEGC            DM             DM            MM   
 HR
+  0.   1019.3           -1.6           -2.5           -2.1          533.2          549.4           0.00
+  3.   1020.2           -2.0           -2.7           -2.7          532.7          549.7           0.00
+  6.   1019.7           -2.1           -3.1           -2.5          532.5          548.9           0.00
+  9.   1019.3           -2.2           -3.3           -2.6          531.9          547.8           0.00
+ 12.   1018.8           -1.2           -3.3           -3.4          530.6          546.0           0.00
+ 15.   1019.4            1.1           -3.2           -3.8          530.2          546.0           0.00
+ 18.   1018.8            3.5           -2.2           -4.3          530.3          545.3           0.00
+ 21.   1018.1            3.3           -1.1           -4.6          530.2          544.5           0.21
[color=red] + 24.   1016.9            1.1           -1.1           -4.5          530.0          543.9           2.10
+ 27.   1015.5            0.4           -1.2           -3.7          530.2          543.0           1.40
+ 30.   1012.4            0.5           -0.8           -3.2          531.0          541.2           2.43
+ 33.   1008.4            0.5           -0.4           -2.5          531.6          538.5           6.47
+ 36.   1005.9            0.8            0.4           -2.1          531.8          535.9           7.84
+ 39.   1006.1            1.0            0.8           -2.5          530.9          535.5           4.74
+ 42.   1006.7            0.3           -0.5           -3.3          530.5          535.4           4.95
+ 45.   1008.1           -1.2           -2.3           -3.9          530.6          537.0           3.21[/color]
+ 48.   1010.6           -3.4           -4.3           -4.2          529.5          538.3           0.25
+ 51.   1012.2           -4.3           -5.0           -4.2          528.5          538.8           0.43
+ 54.   1013.0           -4.4           -5.0           -6.1          527.3          538.3           0.07
+ 57.   1013.1           -4.1           -4.6           -6.7          526.1          537.1           0.14
+ 60.   1013.6           -4.8           -5.4           -6.0          525.8          537.2           0.14
+ 63.   1015.0           -2.8           -3.6           -6.0          526.4          538.5           0.04
+ 66.   1014.8           -1.0           -2.0           -5.8          527.3          539.2           0.21
+ 69.   1014.1           -1.2           -1.8           -5.7          528.1          539.3           0.98
[color=seagreen] + 72.   1014.0           -1.9           -2.3           -5.3          528.8          540.2           1.95
+ 75.   1013.5           -1.8           -2.4           -5.4          529.6          540.6           2.12
+ 78.   1011.8           -1.7           -2.1           -4.7          531.3          540.9           2.20
+ 81.   1010.2           -1.8           -2.1           -5.9          531.2          539.6           4.98
+ 84.   1009.8           -1.9           -2.4           -5.2          531.2          539.3           2.71
+ 87.   1009.8           -1.7           -2.3           -4.9          531.5          539.5           2.31
+ 90.   1009.0           -1.2           -2.0           -5.0          532.1          539.4           2.31
+ 93.   1007.8           -1.7           -2.3           -5.0          532.6          538.7           2.51
+ 96.   1007.1           -2.8           -3.3           -4.5          532.6          538.4           1.79
+ 99.   1006.9           -2.6           -3.2           -4.4          531.4          537.6           3.68
+102.   1005.7           -2.3           -2.9           -2.8          529.9          535.3           1.05
+105.   1003.9           -3.8           -4.5           -2.9          529.5          532.6           0.25
+108.   1005.3           -3.6           -4.3           -4.3          528.1          532.0           2.22
+111.   1007.7           -1.9           -2.4           -4.5          527.2          532.9           1.99[/color]
+114.   1009.6           -0.1           -0.1           -6.1          526.4          533.4           0.41
+117.   1011.2           -0.4           -0.5           -6.0          524.5          533.1           0.15
+120.   1013.0          -10.2          -10.2           -5.8          523.6          534.2           0.07
+123.   1014.3          -14.0          -14.2           -5.6          523.4          535.1           0.07
+126.   1014.4          -13.7          -13.8           -4.9          523.8          535.4           0.02
+129.   1013.5           -6.6           -8.1           -4.4          523.9          534.9           0.04
+132.   1013.1           -5.9           -6.9           -3.9          524.7          535.5           0.04
+135.   1012.5           -1.0           -1.7           -4.0          526.0          536.2           0.03
+138.   1012.2            0.3           -0.0           -5.3          526.3          535.5           0.71
[color=cadetblue] +141.   1011.6           -0.0           -0.6           -4.4          525.6          534.3           1.95
+144.   1011.9           -1.1           -1.7           -5.0          524.0          533.9           1.71
+147.   1011.9           -1.9           -2.4           -4.8          523.4          533.5           0.78
+150.   1010.9           -2.7           -3.3           -4.9          523.8          533.0           0.41
+153.   1010.1           -2.5           -3.0           -6.0          524.0          532.6           0.78
+156.   1010.6           -2.8           -3.3           -6.8          524.1          533.0           1.19
+159.   1012.2           -2.5           -3.1           -8.2          524.0          533.8           1.77
+162.   1013.7           -2.0           -2.9           -8.1          523.3          533.9           1.77
+165.   1014.9           -2.5           -3.4           -8.1          522.3          534.0           0.42
+168.   1016.8           -5.6           -6.5           -8.1          521.2          535.1           1.95[/color]
+171.   1018.2           -9.6          -10.2           -7.4          520.6          535.7           0.04
+174.   1020.1           -7.6           -8.5           -7.9          519.3          535.8           0.04
+177.   1021.6           -5.6           -6.2           -7.3          519.1          536.5           0.79
+180.   1023.8           -5.1           -5.7           -6.8          519.3          538.5           0.79
+183.   1026.5           -3.0           -3.9           -6.8          520.1          541.1           0.00
+186.   1028.1           -0.7           -1.7           -6.6          521.0          543.0           0.06
+189.   1029.0           -0.4           -1.4           -6.4          521.4          544.2           0.21
+192.   1030.5           -3.6           -4.6           -6.5          521.3          545.6           0.00

dal medesimo, si notano bene tre fasi:
[color=red] la prima fase [/color] signore e signori è rappresentata da ben [size=24] 33 mm [/size] (si avete letto bene), che, dati alla mano, cadrebbero con una temperatura a 2m massima di 1.1°C....il che è tutto dire;

[color=seagreen] la seconda fase [/color] è costituita da un totale di ben [size=18] 32.07 mm [/size] che cadrebbero, seppur in un tempo più lungo, con temperature COSTANTEMENTE NEGATIVE all'altezza di 2 m.s.l.m.;

[color=cadetblue] la terza fase [/color] presenta invece [size=14] 11.54 mm [/size] con temperature mai sopra allo zero a 2m d'altitudine....

in conclusione, fate vobis ma io AD ORA CON GFS18Z vedo più di 50cm di neve......a 300m. Notte!


