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[PP07] Extreme weather events
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Temperature observations show increasing trend of maximum and minimum absolute temperature in between 1961 and 2015, reflecting a global warming. Number of hot days is increasing, including the frequency of extreme hot days with daily maximum temperature above 35 °C. Number of days with temperature below zero show a decline. Apart from temperatures, another climate change related concern is the change in the precipitation regimes between regions and individual seasons. In last two decades Slovenia was faced with catastrophic droughts and abundant precipitation resulting in floods, sometimes drought and floods occurring even within the same year.

The indicator shows annual extremes: the minimum and the maximum air temperatures, the number of days with temperatures above and below the selected threshold, and the maximum snow cover depth in six places across Slovenia. Characteristics of heavy precipitation and storms are described in words.

Charts

Figure PP07-1: Absolute maximum and minimum temperature, Slovenia, 1961-2015
Sources:

Meteorological Data Archives, Meteorological Office, Slovenian Environment Agency, 2016

Show data
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
max. Kredarica °C 15.4 17.4 14 16.7 16.3 16.7 16.6 16.8 15.6 17
max. Rateče °C 29 29.8 28.6 28.4 30.4 29.4 30.6 30.4 30.5 29.3
max Murska Sobota °C 33.6 32.6 33.9 31.2 32 30.6 33.3 37.2 33.2 31.8
max. Novo mesto °C 33.8 33.9 35.4 32.3 34 30.4 34.2 36.2 31.8 32.6
max Ljubljana °C 33.9 33.5 33.8 32.2 34.7 31.3 33.5 35.3 33.6 33.2
max Portorož °C
min Kredarica °C -24.1 -25.8 -28 -21 -22.8 -21.3 -21.7 -26.7 -22.6 -22.6
min Rateče °C -21.2 -19 -23.2 -19.7 -19.8 -20.2 -20.4 -24.8 -23 -22
min Murska Sobota °C -22.4 -16.7 -31 -21.2 -18.4 -22.1 -23.8 -25.5 -27.6 -18.8
min Novo mesto °C -20.4 -17 -23.6 -17.1 -16.9 -17.8 -22.3 -23.4 -21.6 -18.4
min Ljubljana °C -15.2 -13.8 -20.2 -15.3 -11.5 -15.3 -13.7 -19.7 -16.3 -13.7
min Portorož °C
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
max. Kredarica °C 18.1 17.4 16.1 16.6 18.4 15 13.8 14.6 14 17.8
max. Rateče °C 32.1 29.2 28.4 30.7 28 30 28.8 26.7 27.4 28.5
max Murska Sobota °C 34.4 32.4 30.4 32.4 29.8 32.3 31.2 29.4 30.5 30.8
max. Novo mesto °C 36.4 32.5 31.7 32.9 31.2 32.6 31.1 31 32.6 31.6
max Ljubljana °C 36.5 33.2 31.4 33.1 32 34 32 29.6 31.8 32.8
max Portorož °C
min Kredarica °C -28.1 -19.1 -24 -17.7 -20.6 -22.2 -19.1 -19.9 -27.8 -22.2
min Rateče °C -22 -15.2 -18.8 -12.2 -17.6 -19.8 -17.7 -21.2 -22.7 -20.1
min Murska Sobota °C -18.6 -14 -17.5 -7.7 -11.2 -22.4 -20.7 -23.6 -20 -22.2
min Novo mesto °C -14.5 -10.9 -15.6 -7.5 -10.8 -15.9 -11.6 -16.7 -17 -17.3
min Ljubljana °C -14.7 -10 -16 -6.7 -9.9 -14.6 -8.4 -12.2 -14.5 -15.2
min Portorož °C
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
max. Kredarica °C 18 16.6 21.6 18.2 16 14.3 17 15.8 15.1 15.9
max. Rateče °C 29 28.8 36.1 31.8 29.3 29.7 27.8 29.8 29.1 28.4
max Murska Sobota °C 32.1 31.8 35.6 31.2 31.8 32.7 33.1 34.8 30.9 32.4
max. Novo mesto °C 31.7 31.7 34.7 33.5 32.1 32.5 31.7 34.3 30.4 33
max Ljubljana °C 33.7 32.8 37.1 33.3 33.1 32.7 33.2 34.9 32 33.4
max Portorož °C 33 34.9
min Kredarica °C -25.1 -23.4 -22.7 -21.1 -28.3 -22.6 -24.2 -21.4 -17.6 -19.6
min Rateče °C -21.8 -19.3 -20.2 -20.4 -26.4 -22 -24.3 -19.2 -14.2 -14.4
min Murska Sobota °C -21.6 -19 -17.4 -19.6 -26.4 -22.7 -26.9 -16.6 -13.1 -14.1
min Novo mesto °C -16.1 -12.2 -15.2 -13.7 -23.5 -17.1 -19.4 -15.1 -11.6 -13.4
min Ljubljana °C -14.4 -10.6 -14.1 -12.9 -20.3 -13.3 -18.3 -14.5 -11.4 -11.1
min Portorož °C -6.9 -5
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
max. Kredarica °C 16.6 17.8 15.4 16.1 17.8 14.3 16.8 17.8 17.4 18
max. Rateče °C 30.5 33.2 30.4 31.6 30.1 29.2 27.8 32.4 29.3 31
max Murska Sobota °C 33.2 37.2 35.2 34.1 31.4 32.2 30.4 33.5 32.9 37.9
max. Novo mesto °C 33.2 36.2 35.6 34.7 31.4 32 30 33.8 33.3 36.7
max Ljubljana °C 34.2 36.5 34.9 34.7 33.5 33.3 30.8 34.1 33.1 35.6
max Portorož °C 33.6 34.7 34.1 35.7 34.4 34.4 31.4 36.3 33 35
min Kredarica °C -25.3 -22.7 -25.2 -22.6 -20.8 -26.3 -17.8 -19.9 -24.8 -23.7
min Rateče °C -20.4 -15.6 -18.2 -17.6 -15.5 -20.8 -13.1 -16.7 -20.3 -20.4
min Murska Sobota °C -17.1 -11.5 -17.3 -17.5 -19.4 -21.3 -13.4 -15.6 -16 -14.6
min Novo mesto °C -15.8 -12.3 -18.6 -14 -11.7 -17.1 -9.5 -14.4 -14 -15.7
min Ljubljana °C -14.6 -11.3 -12.6 -10.6 -9.2 -13 -9.1 -13.1 -11.9 -14
min Portorož °C -10.3 -6.2 -6.8 -8.2 -6.4 -8.5 -4.4 -6.3 -5.5 -9.5
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
max. Kredarica °C 16.9 16.7 18.6 15.6 18.4 17.3 18.2 16.4 17 16.2
max. Rateče °C 30.3 31.7 34.3 31.4 30.8 32.6 32.3 30.5 30.4 31.8
max Murska Sobota °C 35.6 34.1 38.4 33.4 33.4 33.3 39.1 33.2 33.7 33.5
max. Novo mesto °C 35.5 34 38.4 33 33.4 34.4 36.6 32.7 33.7 35.6
max Ljubljana °C 35.2 34.9 37.3 34.3 35 35.9 37 32.7 32.9 35.9
max Portorož °C 34.7 34 36.9 34.9 34.6 35.9 36.7 33.5 33.8 35.5
min Kredarica °C -24.2 -19.6 -20.9 -19.2 -25.8 -19.1 -18.4 -18.9 -23.1 -22.5
min Rateče °C -18.1 -17.5 -21 -20.1 -24.3 -20.4 -14 -16.7 -21.2 -20.7
min Murska Sobota °C -22 -13.7 -21.6 -18.8 -24.1 -22.6 -8.2 -11 -21.1 -20.3
min Novo mesto °C -15.1 -12.4 -18.2 -15.2 -17.2 -16.1 -9.4 -9.6 -15.9 -14.9
min Ljubljana °C -14.5 -12.9 -16.2 -11.2 -14.1 -15.7 -6.9 -7.7 -13.1 -11.9
min Portorož °C -7.8 -7.5 -8.8 -8.6 -10.5 -8.6 -3.6 -6.7 -9.9 -7.4
2011 2012 2013 2014 2015
max. Kredarica °C 19.6 18.8 19.1 15.5 18.1
max. Rateče °C 32.8 33 35.8 31 32.4
max Murska Sobota °C 35 37.2 40.1 34.4 35.7
max. Novo mesto °C 36.7 37.8 39.9 33.6 35
max Ljubljana °C 36 37.1 40.2 35 36.5
max Portorož °C 35.1 36.8 37.3 33.6 37.4
min Kredarica °C -19.2 -25 -19.9 -20.4 -19.3
min Rateče °C -16.3 -17.4 -16.8 -14.2 -13.6
min Murska Sobota °C -10.4 -20.4 -15.5 -15.6 -11.7
min Novo mesto °C -10.3 -16.6 -10 -14.1 -14.8
min Ljubljana °C -7.6 -12.2 -7.2 -11 -9.6
min Portorož °C -5.7 -8.1 -3.8 -2 -3.5
Figure PP07-2: Absolute maximum and minimum temperature, Slovenia, 1961-2015
Sources:

Meteorological Data Archives, Meteorological Office, Slovenian Environment Agency, 2016

Show data
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
Kredarica number of days 0 0 0 0 0 0 0 0 0 0
Rateče number of days 0 0 0 0 1 0 1 1 1 0
Murska Sobota number of days 9 8 16 3 3 2 13 8 5 4
Novo mesto number of days 10 19 15 3 10 4 15 8 7 6
Ljubljana number of days 11 18 14 9 11 4 19 8 9 12
Portorož number of days
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
Kredarica number of days 0 0 0 0 0 0 0 0 0 0
Rateče number of days 1 0 0 2 0 1 0 0 0 0
Murska Sobota number of days 12 7 2 12 0 6 2 0 6 4
Novo mesto number of days 12 8 5 8 2 7 2 2 9 4
Ljubljana number of days 18 10 9 18 5 8 4 0 7 8
Portorož number of days
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
Kredarica number of days 0 0 0 0 0 0 0 0 0 0
Rateče number of days 0 0 8 3 0 0 0 0 0 0
Murska Sobota number of days 6 5 14 2 9 7 12 19 6 11
Novo mesto number of days 7 3 11 6 8 10 10 16 4 9
Ljubljana number of days 8 10 18 5 17 12 12 24 7 10
Portorož number of days 10 17
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Kredarica number of days 0 0 0 0 0 0 0 0 0 0
Rateče number of days 1 14 1 7 1 0 0 5 0 2
Murska Sobota number of days 11 36 29 30 7 6 1 18 10 33
Novo mesto number of days 9 22 25 25 6 7 2 23 13 31
Ljubljana number of days 17 28 21 32 16 7 3 33 13 29
Portorož number of days 28 28 24 52 23 8 10 37 29 25
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Kredarica number of days 0 0 0 0 0 0 0 0 0 0
Rateče number of days 3 3 17 3 3 12 8 1 2 10
Murska Sobota number of days 32 21 55 15 14 27 29 20 16 22
Novo mesto number of days 30 12 58 14 15 25 23 16 22 23
Ljubljana number of days 29 15 54 14 16 31 24 18 25 22
Portorož number of days 37 18 70 24 25 39 37 42 39 23
2011 2012 2013 2014 2015
Kredarica number of days 0 0 0 0 0
Rateče number of days 8 11 16 1 13
Murska Sobota number of days 23 41 29 14 40
Novo mesto number of days 31 39 31 12 45
Ljubljana number of days 31 40 35 15 44
Portorož number of days 30 58 44 12 52
Figure PP07-3: Number of days with maximum temperature below 0 °C, Slovenia, 1961-2015
Sources:

Meteorological Data Archives, Meteorological Office, Slovenian Environment Agency, 2016

Show data
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
Kredarica number of days 131 187 148 171 174 156 142 165 166 174
Rateče number of days 31 43 56 41 39 33 35 43 57 40
Murska Sobota number of days 25 33 60 35 18 23 19 38 42 28
Novo mesto number of days 18 31 54 32 14 18 20 29 38 25
Ljubljana number of days 22 31 49 31 17 23 20 28 35 22
Portorož number of days
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
Kredarica number of days 162 172 162 196 165 171 141 164 163 167
Rateče number of days 36 45 27 6 15 35 28 40 31 48
Murska Sobota number of days 36 32 15 1 5 25 16 30 18 31
Novo mesto number of days 26 30 13 3 6 22 13 26 14 24
Ljubljana number of days 29 22 14 1 11 17 9 20 12 21
Portorož number of days
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
Kredarica number of days 148 151 130 166 164 149 160 149 126 127
Rateče number of days 34 26 25 36 43 45 41 13 13 26
Murska Sobota number of days 17 28 24 19 40 45 39 10 14 20
Novo mesto number of days 16 26 18 20 32 37 28 6 7 16
Ljubljana number of days 17 21 11 16 31 36 23 13 6 16
Portorož number of days 0 0
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Kredarica number of days 165 131 128 137 148 159 143 147 126 124
Rateče number of days 45 21 28 17 28 37 22 28 26 18
Murska Sobota number of days 24 12 28 16 23 46 22 23 27 19
Novo mesto number of days 20 15 24 13 16 46 15 19 20 12
Ljubljana number of days 25 15 21 5 7 37 12 17 20 12
Portorož number of days 1 0 1 1 0 3 0 0 0 0
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Kredarica number of days 151 121 144 142 142 132 127 151 155 169
Rateče number of days 33 21 22 29 50 28 7 16 31 54
Murska Sobota number of days 20 21 23 19 22 27 15 10 20 26
Novo mesto number of days 15 18 22 14 19 14 18 9 23 26
Ljubljana number of days 17 14 14 14 11 15 11 8 21 25
Portorož number of days 0 0 0 0 0 0 0 0 1 0
2011 2012 2013 2014 2015
Kredarica number of days 123 130 148 117 111
Rateče number of days 21 31 23 14 11
Murska Sobota number of days 21 20 14 12 7
Novo mesto number of days 19 19 11 9 5
Ljubljana number of days 13 20 10 6 2
Portorož number of days 0 6 0 0 0
Figure PP07-4: Maximum snow cover depth (cm), Slovenia, 1961-2015
Sources:

Meteorological Data Archives, Meteorological Office, Slovenian Environment Agency, 2016

Show data
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
Kredarica cm 318 335 304 282 391 270 348 362 392 450
Rateče cm 82 95 125 96 178 68 110 101 181 167
Murska Sobota cm 10 43 53 22 23 23 23 14 50 30
Novo mesto cm 22 42 59 52 30 37 57 20 103 34
Ljubljana cm 41 21 54 42 39 37 40 49 95 45
Portorož cm
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
Kredarica cm 299 411 405 360 560 300 690 587 630 420
Rateče cm 107 100 130 85 135 112 104 190 102 106
Murska Sobota cm 28 24 17 3 3 31 18 23 17 31
Novo mesto cm 51 35 37 20 7 52 21 28 27 40
Ljubljana cm 53 49 12 11 14 69 28 35 20 30
Portorož cm
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
Kredarica cm 280 350 390 500 495 490 405 425 220 310
Rateče cm 118 92 82 173 90 113 114 75 17 71
Murska Sobota cm 38 11 42 25 24 61 44 12 0 10
Novo mesto cm 37 19 50 54 45 50 43 20 4 9
Ljubljana cm 31 14 67 47 55 46 89 15 1 7
Portorož cm 0 0
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Kredarica cm 440 380 205 370 380 325 250 315 385 325
Rateče cm 110 42 73 75 71 98 58 26 119 40
Murska Sobota cm 20 4 35 30 30 33 27 16 31 7
Novo mesto cm 22 32 50 62 44 52 25 25 65 17
Ljubljana cm 21 20 18 32 30 35 39 21 56 11
Portorož cm 0 0 0 0 3 0 0 0 0 0
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Kredarica cm 700 195 240 465 245 495 300 435 560 450
Rateče cm 38 14 45 125 107 124 82 132 136 79
Murska Sobota cm 21 8 27 18 46 37 9 5 11 27
Novo mesto cm 16 19 52 42 37 24 28 11 24 50
Ljubljana cm 14 21 26 41 40 32 19 17 23 48
Portorož cm 0 0 3 0 7 0 0 0 1 8
2011 2012 2013 2014 2015
Kredarica cm 395 240 475 560 245
Rateče cm 27 28 115 120 40
Murska Sobota cm 3 14 40 14 8
Novo mesto cm 6 44 65 30 49
Ljubljana cm 3 27 53 26 28
Portorož cm 0 11 8 0 0
Figure PP07-5: Projected changes in annual snowfall days, Europe
Sources:

European Environment Agency, Indicators, 2016.http://www.eea.europa.eu/data-and-maps/figures/projected-changes-in-ann…

Figure PP07-6: Projected changes in heavy precipitation in winter (left) and summer (right), Europe 
Sources:

European Environment Agency, Indicators, 2016.http://www.eea.europa.eu/data-and-maps/figures/projected-changes-in-20-…

Last modified
06.10.2016
Author(s)

Tanja Cegnar, Slovenian Environment Agency