[ 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: 17:42:25 30/03/2020 for this map view. This run created in 84.04 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
1630
1620
7.28
8
0.72
2.44
5
2.56
2227
1200
-1027
1031.6
1031
-0.6
17
010
7
16
12
-4
BCambridge A/P
52.2050N 0.1750W
1630
1620
7.91
9
1.09
3.30
3
-0.3
1907
2400
493
1032.4
1032
-0.4
16
020
4
18
17
-1
RAF Culdrose
50.0843N -5.2571E
1600
1550
7.98
9
1.02
2.78
2
-0.78
2358
2800
442
1033.3
1032
-1.3
28
030
2
17
19
2
FExeter A/P
50.7372N -3.4058E
1630
1620
8.64
8
-0.64
3.45
2
-1.45
2344
2400
56
1032.6
1032
-0.6
25
010
15
15
10
-5
RAF Odiham
51.2391N -0.9450E
1630
1622
8.98
9
0.02
1.00
1
0
3636
3200
-436
1031.4
1030
-1.4
39
030
9
19
12
-7
IRAF Wittering
52.6114N -0.4612E
1600
1550
8.08
9
0.92
2.76
3
0.24
2420
2400
-20
1033.3
1032
-1.3
31
030
1
17
15
-2
RAF Fairford
51.68135N -1.79109E
1700
1606
8.59
7
-1.59
3.83
4
0.17
2339
1200
-1139
1032.3
1033
0.7
27
030
3
16
11
-5
JRAF Shawbury
52.7947N -2.6647E
1600
1550
9.88
8
-1.88
1.67
3
1.33
3688
2000
-1688
1034.6
1035
0.4
19
340
39
15
9
-6
KRAF Benson
51.6203N -1.0987E
1630
1620
7.66
8
0.34
3.92
2
-1.92
1826
2400
574
1032.3
1032
-0.3
34
020
14
17
14
-3
MRAF Valley
53.2527N -4.5365E
1600
1550
9.54
10
0.46
2.55
0
-2.55
2911
4000
1089
1036.9
1036
-0.9
13
020
7
15
17
2
NLydd A/P
50.9561N 0.9392W
1630
1620
8.02
0
-8.02
1.17
0
-1.17
2828
0
-2828
1030.7
1030
-0.7
42
42
17
-17
ODundee A/P
56.4525N -3.0258E
1630
1620
7.18
11
3.82
2.62
5
2.38
2912
2400
-512
1036.6
1037
0.4
37
040
3
11
11
0
PRAF Kinloss
57.6456N -3.5635E
1600
1550
8.21
8
-0.21
3.22
6
2.78
2126
800
-1326
1037.8
1038
0.2
337
320
17
10
7
-3
QNorwich A/P
52.6333N 1.3000W
1630
1620
6.85
8
1.15
3.19
3
-0.19
1484
2000
516
1032.0
1031
-1
3
360
3
16
12
-4
SLuton A/P
51.8747N -0.3683E
1630
1620
7.43
8
0.57
1.26
1
-0.26
2987
2800
-187
1032.1
1031
-1.1
35
030
5
18
16
-2
TCardiff Intl A/P
51.3967N -3.3433E
1630
1620
10.11
9
-1.11
2.30
1
-1.3
3368
3200
-168
1033.1
1033
-0.1
41
050
9
16
15
-1
UNewcastle A/P
55.0375N -1.6917E
1630
1620
7.75
9
1.25
1.67
1
-0.67
2714
3200
486
1036.3
1035
-1.3
20
020
0
16
15
-1
VBelfast / Aldergrove A/P
54.6633N -6.2258E
1600
1550
7.81
9
1.19
3.63
4
0.37
1918
2000
82
1038.9
1038
-0.9
352
350
2
19
10
-9
WManchester A/P
53.3537N -2.2750E
1630
1620
9.54
9
-0.54
1.10
0
-1.1
3764
3600
-164
1034.8
1035
0.2
22
020
2
14
14
0
XGlasgow A/P
55.8719N -4.4331E
1630
1620
11.49
12
0.51
2.11
2
-0.11
4065
4000
-65
1037.0
1037
0
15
360
15
9
6
-3
YEdinburgh A/P
55.9500N -3.3500E
1630
1620
9.26
11
1.74
3.22
3
-0.22
2631
3200
569
1036.9
1036
-0.9
69
030
39
6
5
-1
ZHeathrow A/P
51.4775N -0.4614E
1630
1620
9.43
9
-0.43
1.08
2
0.92
3663
2800
-863
1031.5
1031
-0.5
37
020
17
17
10
-7
1Southampton A/P
50.9499N -1.3585E
1230
1220
7.80
8
0.2
0.17
2
1.83
3024
2400
-624
1034.0
1034
0
25
010
15
15
12
-3
2Leeds A/P
53.8618N -1.6653E
1500
1450
7.79
8
0.21
1.71
1
-0.71
3002
2800
-202
1035.5
1035
-0.5
25
010
15
19
14
-5
3Dublin A/P
53.4215N -6.2977E
1630
1630
7.94
8
0.06
3.81
3
-0.81
1925
2000
75
1038.2
1038
-0.2
20
030
10
13
8
-5
Stornaway A/P
58.2156N -6.3311E
1630
1620
6.19
7
0.81
3.53
4
0.47
1174
1200
26
1039.9
1040
0.1
321
340
19
12
8
-4
4Tiree
56.5000N -6.8828E
1630
1620
7.16
8
0.84
3.14
4
0.86
1586
1600
14
1040.9
1040
-0.9
350
350
0
19
20
1
5Benbecula
57.4811N -7.3628E
1630
1620
6.02
8
1.98
4.12
4
-0.12
877
1600
723
1041.3
1041
-0.3
328
340
12
13
9
-4
6Ronaldsway A/P
54.0853N -4.6320E
1630
1620
8.31
10
1.69
4.63
3
-1.63
1886
2800
914
1037.1
1037
-0.1
353
340
13
15
11
-4
RAF Boulmer
55.4209N -1.6012E
1600
1550
6.07
9
2.93
4.27
4
-0.27
886
2000
1114
1036.5
1036
-0.5
353
350
3
19
14
-5
Aberdeen A/P
57.2049N -2.2053E
1630
1620
7.54
7
-0.54
3.32
4
0.68
2019
1200
-819
1036.6
1037
0.4
344
340
4
15
12
-3
Birmingham A/P
52.4602N -1.7576E
1630
1620
7.28
7
-0.28
3.93
3
-0.93
1784
1600
-184
1033.7
1034
0.3
37
010
27
16
9
-7
Humberside A/P
53.5744N -0.3508E
1630
1620
6.86
9
2.14
3.38
4
0.62
1589
2000
411
1034.2
1034
-0.2
16
010
6
19
20
1
Staverton A/P
51.8923N -2.1608E
1630
1620
9.39
9
-0.39
1.95
4
2.05
3257
2000
-1257
1033.1
1033
-0.1
30
030
0
17
7
-10
Islay A/P
55.6814N -6.2498E
1630
1620
6.71
9
2.29
3.56
4
0.44
1400
2000
600
1039.7
1039
-0.7
348
350
2
17
19
2
Eglinton A/P
55.0428N -7.1611E
1630
1620
7.07
9
1.93
3.15
3
-0.15
1713
2400
687
1040.6
1040
-0.6
4
360
4
16
12
-4
Southend A/P
51.5714N 0.6956W
1630
1620
7.43
7
-0.43
3.06
3
-0.06
1769
1600
-169
1031.4
1031
-0.4
58
080
22
11
7
-4
Biggin Hill A/P
51.3308N 0.0325W
1630
1620
7.28
6
-1.28
2.33
3
0.67
2572
1200
-1372
1031.0
1031
0
50
070
20
14
8
-6
London City A/P
51.5053N 0.0553W
1630
1620
8.97
10
1.03
0.70
0
-0.7
3302
4000
698
1031.4
1031
-0.4
40
050
10
13
8
-5
East Midlands A/P
52.8311N -1.3281E
1630
1620
8.39
8
-0.39
3.03
2
-1.03
2439
2400
-39
1033.8
1033
-0.8
33
360
33
16
7
-9
Doncaster A/P
53.4747N -1.0044E
1630
1620
7.90
10
2.1
2.67
3
0.33
2210
2800
590
1034.5
1035
0.5
19
010
9
17
15
-2
Liverpool A/P
53.3340N -2.8500E
1630
1620
7.76
9
1.24
4.67
4
-0.67
1819
2000
181
1035.3
1035
-0.3
356
340
16
8
8
0
Wick A/P
58.4589N -3.0931E
1630
1620
7.26
7
-0.26
3.92
5
1.08
1457
800
-657
1036.8
1037
0.2
319
320
1
16
14
-2
7Pembrey Sands Stn
51.7144N -4.3675E
1600
1550
9.77
10
0.23
4.34
1
-3.34
2426
3600
1174
1034.3
1034
-0.3
10
040
30
14
13
-1
0RNAS Yeovilton
51.0063N -2.6428E
1630
1620
9.54
9
-0.54
3.18
2
-1.18
2773
2800
27
1032.2
1032
-0.2
31
030
1
17
13
-4


Table Averages
Difference Averages: Dry: 0.35° C - Wet: -0.09° C - Wind Speed: -3.56 Knots (RASP High) - Wind Deviation: 11.7 Degrees - Pressure: -0.4 mb - Cloudbase: -93 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 (74 hours) for EGNC - report not usable.
EGWC (D) RAF Cosford - METAR report more than six hours old (170 hours) for EGWC - report not usable.
EGEC (L) Cambel Town - METAR report more than six hours old (8 hours) for EGEC - 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