by Meteomalaga
Spain weather /
Land temperatures /
Sea surface temperatures /
Synop chart /
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.
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 |
many
THST
|
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
