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Temperature trend / Pressure tendency
Pressure systems / Surface wind analysis / T-Storm forecast: Thunderstorm probability (K-Index) / TSTMS TT
KO-Index / Lightning's of the last 6 h / Geopotenzial 500 / Geopotenzial 850 /Rainfall over the last 12 h / Jet stream
Partial updates every 3 hrs
Coloured land temperature analysis with Isotherms in
a distance of 2° C.
Measured at an altitude of 2 meters, +/- 1 hour before creating the chart.
Sea surface temperatures
marked in Hectopascal
The pressure tendencies on surface, with isohypses in tenth/hectopascal (1/10 hPa).
Evaluation of the
labile air mass of flight level 100
(10.000 feet = 3.300 m)
up to flight level 300 (30.000 feet = +/- 10.000 m)
the values are:
100 = labile air mass from 925 hPa up to flight level FL100
180 = labile air mass from 925 hPa up to flight level FL180
240 = labile air mass from 925 hPa up to flight level FL240
300 = labile air mass from 925 hPa up to flight level FL300
high labile air mass = high risk of thunderstorms.
Updates at 09.30 / 19.30 UTC
The Total-totals Index compares only the air in the 850 mb shift (app. 1.500m) with the 500 mb shift (app. 5.500m). The air underneath 1500 m is not noted by Total-totals. For Total-totals are only important the relative humidity. In that way is a high Total-totals at low temperatures not important, because cold air can not save a lot of moisture and so thunderstorms can not be build up.
Total >52 and Lifted Index at or under 0: Relative lots of showers, but only local thundershowers
Total >52 and Lifted Index under -3: Mostly thunderstorms
Total <50 and Lifted Index under 0: Single thunderstorms
Colour fill scheme:
Orange = TSTMS (thundershowers), showers< 35 Knots, hale < 1,5cm
Green = moderate TSTMS (lots of thundershowers),
showers between 35 and 50 Knots, hale between 1,5 and 2 cm
Blue = Severe TSTMS (strong thunderstorms), showers> 50 Knots, hale > 2cm
Red = Tornadoes, severe TSTMS (thunderstorms, scattered tornadoes possible)
|Calculation for thunderstorm probability||VT||CT||TT|
|(Orange) ISOLD-FEW||18 - 19||≥ 26||44|
|(Orange) SCT, (Green) FEW||20- 21||26||46|
|(Orange) SCT, (Green) FEW, (Blue) ISOLD||22 - 23||26||48|
|(Green) SCT, (Blue) FEW, (Red) ISOLD||24 - 25||26||50|
|(Green) SCT-NMRS, (Blue) FEW-SCT, (Red) FEW||26 - 29||26||52|
|(Green) NMRS, (Blue & Red) SCT||> 30||26||56|
|> 6||no THST|
|> 2||single THST|
|< or = 2||
with Isohyets chart in distance of 1 mm, if under 1 mm then of 0,2 mm.
© without the sea surface temperatures image (DWD) by www.meteomalaga.com