[ RASP UK Forecast (Stratus) ]



BLIP Quality Check

To help understand if the RASP forecast is matching the real world, an experimental script has been put together that will compare a RASP 'spot' forecast against a METAR observation (a real-world airfield met observation).

These observations are produced hourly or so.

The following table is a summary for the UK, using the script outlined below the table and map. The table is produced from 09:00 to 18:00 on the hour and every half hour during UK daylight hours.

A spatial map of the reports can be found here.


The following plot will show a running view of the percentage of measures as correct between the forecast and the RASP prediction. Normally for the whole of the UK, 85% or higher indicates RASP is close enough and can be relied upon.


This report: 17:42:08 18/09/2020 for this map view. This run created in 66.97 secs

MarkLocationTime
RASP
METAR
Dry
Temp
° C
RASP
METAR
Diff
° C
Dew Pt
° C
RASP
METAR
Diff
° C
Cloud
Base
ft
RASP
METAR
Diff
ft
Pressure
mb
RASP
METAR
Diff
mb
Wind
Dir °
RASP
METAR
Diff
°
Wind
Speed
kts
RASP
METAR
Diff
kts
ARAF Wattisham
52.1239N 0.9573W
1730
1720
16.57
18
1.43
9.54
10
0.46
3115
3200
85
1022.3
1021
-1.3
71
080
9
18
13
-5
BCambridge A/P
52.2050N 0.1750W
1730
1720
17.49
18
0.51
8.69
9
0.31
3680
3600
-80
1022.4
1022
-0.4
70
070
0
16
9
-7
RAF Culdrose
50.0843N -5.2571E
1700
1650
17.65
18
0.35
11.34
12
0.66
2797
2400
-397
1016.0
1015
-1
84
070
14
28
28
0
FExeter A/P
50.7372N -3.4058E
1700
1650
20.54
20
-0.54
10.32
11
0.68
4508
3600
-908
1018.3
1018
-0.3
69
050
19
16
15
-1
RAF Odiham
51.2391N -0.9450E
1700
1650
18.75
19
0.25
8.26
8
-0.26
4724
4400
-324
1020.0
1020
0
70
060
10
16
12
-4
IRAF Wittering
52.6114N -0.4612E
1700
1650
17.23
17
-0.23
7.78
9
1.22
4082
3200
-882
1023.2
1022
-1.2
60
040
20
18
17
-1
RAF Fairford
51.68135N -1.79109E
1700
1656
19.06
20
0.94
7.85
7.4
-0.45
5035
5040
5
1020.6
1020
-0.6
73
070
3
18
17
-1
JRAF Shawbury
52.7947N -2.6647E
1700
1650
17.02
18
0.98
7.45
8
0.55
4380
4000
-380
1023.2
1022
-1.2
73
070
3
17
13
-4
KRAF Benson
51.6203N -1.0987E
1700
1650
18.55
20
1.45
6.73
8
1.27
5229
4800
-429
1020.8
1020
-0.8
74
060
14
19
13
-6
LCambel Town
55.4372N -5.6864E
1730
1720
18.19
17
-1.19
12.39
13
0.61
2729
1600
-1129
1026.1
1026
-0.1
75
300
135
9
2
-7
MRAF Valley
53.2527N -4.5365E
1730
1725
15.74
17
1.26
10.03
10
-0.03
2598
2800
202
1023.2
1022
-1.2
56
060
4
17
17
0
NLydd A/P
50.9561N 0.9392W
1730
1720
17.64
19
1.36
12.85
14
1.15
1970
2000
30
1019.6
1019
-0.6
54
050
4
20
17
-3
ODundee A/P
56.4525N -3.0258E
1700
1650
11.83
15
3.17
10.01
11
0.99
1078
1600
522
1028.6
1028
-0.6
85
090
5
11
7
-4
PRAF Kinloss
57.6456N -3.5635E
1700
1650
16.71
19
2.29
13.19
13
-0.19
1572
2400
828
1028.3
1028
-0.3
71
040
31
9
10
1
QNorwich A/P
52.6333N 1.3000W
1730
1720
16.26
17
0.74
9.17
11
1.83
2905
2400
-505
1023.5
1023
-0.5
75
070
5
17
14
-3
SLuton A/P
51.8747N -0.3683E
1730
1720
17.18
18
0.82
8.00
7
-1
4303
4400
97
1021.5
1021
-0.5
70
060
10
17
13
-4
TCardiff Intl A/P
51.3967N -3.3433E
1730
1720
18.72
19
0.28
9.01
9
-0.01
4342
4000
-342
1019.4
1019
-0.4
68
060
8
22
17
-5
UNewcastle A/P
55.0375N -1.6917E
1730
1720
13.02
14
0.98
8.97
8
-0.97
1950
2400
450
1028.0
1028
0
75
070
5
12
9
-3
VBelfast / Aldergrove A/P
54.6633N -6.2258E
1730
1720
15.24
15
-0.24
12.09
10
-2.09
1576
2000
424
1025.8
1026
0.2
78
080
2
10
9
-1
WManchester A/P
53.3537N -2.2750E
1730
1720
16.00
17
1
7.63
9
1.37
3974
3200
-774
1024.2
1024
-0.2
73
070
3
14
7
-7
XGlasgow A/P
55.8719N -4.4331E
1730
1720
17.20
19
1.8
7.58
10
2.42
4608
3600
-1008
1027.0
1027
0
72
070
2
12
11
-1
YEdinburgh A/P
55.9500N -3.3500E
1730
1720
13.97
14
0.03
9.45
11
1.55
2085
1200
-885
1027.6
1027
-0.6
45
040
5
6
10
4
ZHeathrow A/P
51.4775N -0.4614E
1730
1720
18.14
20
1.86
9.26
7
-2.26
4092
5200
1108
1020.5
1020
-0.5
68
070
2
17
10
-7
1Southampton A/P
50.9499N -1.3585E
1730
1720
19.71
19
-0.71
8.46
8
-0.46
4643
4400
-243
1019.1
1018
-1.1
63
040
23
17
11
-6
2Leeds A/P
53.8618N -1.6653E
1730
1720
14.28
15
0.72
8.59
9
0.41
2994
2400
-594
1025.8
1025
-0.8
75
070
5
15
12
-3
3Dublin A/P
53.4215N -6.2977E
1730
1730
13.69
13
-0.69
9.94
9
-0.94
1798
1600
-198
1024.2
1024
-0.2
63
060
3
17
15
-2
Stornaway A/P
58.2156N -6.3311E
1730
1720
15.70
14
-1.7
13.69
13
-0.69
924
400
-524
1028.5
1028
-0.5
353
020
27
4
5
1
4Tiree
56.5000N -6.8828E
1730
1720
14.75
16
1.25
11.59
13
1.41
1346
1200
-146
1027.4
1027
-0.4
4
010
6
10
10
0
5Benbecula
57.4811N -7.3628E
1730
1720
13.43
15
1.57
12.44
14
1.56
505
400
-105
1028.2
1028
-0.2
327
320
7
8
5
-3
6Ronaldsway A/P
54.0853N -4.6320E
1730
1720
15.03
16
0.97
8.85
8
-0.85
3069
3200
131
1025.1
1025
-0.1
45
060
15
13
11
-2
RAF Boulmer
55.4209N -1.6012E
1700
1650
12.53
14
1.47
10.74
9
-1.74
861
2000
1139
1028.8
1028
-0.8
83
100
17
7
8
1
Aberdeen A/P
57.2049N -2.2053E
1730
1720
14.95
17
2.05
7.40
12
4.6
3521
2000
-1521
1028.8
1028
-0.8
158
080
78
7
6
-1
Birmingham A/P
52.4602N -1.7576E
1730
1720
16.63
18
1.37
8.83
8
-0.83
3681
4000
319
1022.6
1022
-0.6
63
050
13
17
13
-4
Humberside A/P
53.5744N -0.3508E
1730
1720
14.26
16
1.74
8.91
11
2.09
2319
2000
-319
1025.6
1026
0.4
74
070
4
18
13
-5
Staverton A/P
51.8923N -2.1608E
1730
1720
18.81
20
1.19
7.38
8
0.62
5041
4800
-241
1021.0
1020
-1
68
050
18
17
13
-4
Islay A/P
55.6814N -6.2498E
1730
1720
18.15
20
1.85
12.98
13
0.02
2410
2800
390
1026.3
1026
-0.3
64
070
6
8
9
1
Eglinton A/P
55.0428N -7.1611E
1730
1720
16.47
17
0.53
12.28
14
1.72
1948
1200
-748
1025.8
1026
0.2
46
040
6
11
12
1
Southend A/P
51.5714N 0.6956W
1730
1720
17.26
17
-0.26
11.05
12
0.95
2547
2000
-547
1021.2
1021
-0.2
62
050
12
18
14
-4
Biggin Hill A/P
51.3308N 0.0325W
1730
1720
15.94
16
0.06
10.90
10
-0.9
2605
2400
-205
1020.5
1021
0.5
66
060
6
19
15
-4
London City A/P
51.5053N 0.0553W
1730
1720
17.93
19
1.07
9.91
9
-0.91
3244
4000
756
1020.9
1021
0.1
70
080
10
18
15
-3
East Midlands A/P
52.8311N -1.3281E
1730
1720
15.77
17
1.23
8.02
8
-0.02
3541
3600
59
1023.6
1023
-0.6
69
040
29
17
14
-3
Doncaster A/P
53.4747N -1.0044E
1730
1720
15.26
16
0.74
7.99
9
1.01
3091
2800
-291
1025.3
1026
0.7
69
080
11
17
9
-8
Liverpool A/P
53.3340N -2.8500E
1730
1720
16.65
19
2.35
10.08
10
-0.08
3438
3600
162
1023.9
1023
-0.9
85
080
5
13
12
-1
Wick A/P
58.4589N -3.0931E
1730
1720
13.93
14
0.07
12.48
13
0.52
665
400
-265
1029.2
1029
-0.2
142
130
12
4
3
-1
7Pembrey Sands Stn
51.7144N -4.3675E
1700
1650
18.61
20
1.39
10.22
10
-0.22
3871
4000
129
1020.1
1019
-1.1
79
060
19
15
12
-3
0RNAS Yeovilton
51.0063N -2.6428E
1700
1650
20.24
21
0.76
8.70
9
0.3
5021
4800
-221
1019.0
1018
-1
70
060
10
18
15
-3


Table Averages
Difference Averages: Dry: 0.83° C - Wet: 0.33° C - Wind Speed: -2.72 Knots (RASP High) - Wind Deviation: 14.2 Degrees - Pressure: -0.5 mb - Cloudbase: -160 ft
Difference calculations based on actual minus the forecast.
Averages that are greater than +/- 2 Celcius indicates forecast widely differs from actuals.

Table Key
Highlight thresholds: Wind is 30° - Wind Speed is 7 kts - Temperature is 3° C - Cloudbase is 1500 feet - Pressure is 1.6 mb (not reported upon)

Notes and Observations
EGNC (C) Carlisle A/P - METAR report more than six hours old (4898 hours) for EGNC - report not usable.
EGWC (D) RAF Cosford - METAR report more than six hours old (74 hours) for EGWC - report not usable.


The script is a bit slow, so sometimes the results may not be available as an auto-generated static view.

If this happens, click here to dynamically re-generate the table as a separate page.

If there is a problem with the output, click here to get a copy of the last generated text table.

     

The Webmaster makes no representations or warranties, expressed or implied, as to the accuracy of the information held herein or its fitness for any purpose whatsoever. In no event will the Webmaster be held liable for any direct, indirect, special incidental or consequential damages arising out of the use of the information held on this server.
BLIPMAP = Boundary Layer Information Prediction MAP - Created by Dr. John W. (Jack) Glendening, Meteorologist