[ 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: 17:42:05 26/05/2020 for this map view. This run created in 64.22 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
1719
21.49
22
0.51
11.95
8
-3.95
4338
5600
1262
1034.4
1034
-0.4
0
020
20
6
5
-1
BCambridge A/P
52.2050N 0.1750W
1730
1720
21.72
23
1.28
12.32
10
-2.32
4092
5200
1108
1034.6
1035
0.4
350
360
10
5
5
0
RAF Culdrose
50.0843N -5.2571E
1730
1719
18.31
19
0.69
10.62
9
-1.62
3500
4000
500
1035.8
1036
0.2
355
350
5
9
7
-2
FExeter A/P
50.7372N -3.4058E
1700
1650
19.87
24
4.13
11.47
12
0.53
3744
4800
1056
1035.4
1035
-0.4
182
160
22
7
7
0
RAF Odiham
51.2391N -0.9450E
1730
1720
22.02
24
1.98
9.55
6
-3.55
5670
7200
1530
1034.7
1034
-0.7
315
300
15
5
7
2
IRAF Wittering
52.6114N -0.4612E
1700
1650
20.26
23
2.74
12.63
9
-3.63
3537
5600
2063
1035.0
1034
-1
334
300
34
4
6
2
RAF Fairford
51.68135N -1.79109E
1730
1716
20.53
23
2.47
13.55
12
-1.55
3374
4400
1026
1035.1
1035
-0.1
342
310
32
6
4
-2
JRAF Shawbury
52.7947N -2.6647E
1730
1720
18.85
19
0.15
13.27
12
-1.27
2640
2800
160
1035.9
1036
0.1
3
360
3
7
8
1
KRAF Benson
51.6203N -1.0987E
1730
1722
21.41
23
1.59
12.03
12
-0.03
4305
4400
95
1034.9
1035
0.1
345
330
15
5
7
2
MRAF Valley
53.2527N -4.5365E
1700
1650
15.85
17
1.15
9.26
10
0.74
2825
2800
-25
1037.0
1037
0
322
290
32
5
5
0
NLydd A/P
50.9561N 0.9392W
1730
1720
18.62
21
2.38
12.85
11
-1.85
2472
4000
1528
1035.0
1035
0
200
210
10
6
7
1
ODundee A/P
56.4525N -3.0258E
1730
1720
13.80
18
4.2
6.93
11
4.07
4385
2800
-1585
1034.5
1034
-0.5
287
230
57
12
10
-2
PRAF Kinloss
57.6456N -3.5635E
1700
1650
14.95
18
3.05
6.13
7
0.87
3780
4400
620
1034.5
1034
-0.5
277
280
3
14
13
-1
QNorwich A/P
52.6333N 1.3000W
1730
1720
18.82
21
2.18
8.42
10
1.58
4220
4400
180
1035.3
1036
0.7
55
040
15
8
7
-1
SLuton A/P
51.8747N -0.3683E
1730
1720
21.00
22
1
11.78
11
-0.78
4364
4400
36
1034.8
1035
0.2
347
350
3
6
7
1
TCardiff Intl A/P
51.3967N -3.3433E
1730
1720
17.43
19
1.57
12.52
13
0.48
2165
2400
235
1035.8
1036
0.2
280
280
0
10
10
0
UNewcastle A/P
55.0375N -1.6917E
1730
1720
15.57
17
1.43
10.39
9
-1.39
2441
3200
759
1035.5
1035
-0.5
67
040
27
9
7
-2
VBelfast / Aldergrove A/P
54.6633N -6.2258E
1730
1720
15.80
18
2.2
8.08
7
-1.08
3568
4400
832
1036.7
1037
0.3
346
220
126
1
6
5
WManchester A/P
53.3537N -2.2750E
1730
1720
18.24
18
-0.24
11.03
10
-1.03
3332
3200
-132
1036.1
1037
0.9
297
280
17
10
7
-3
XGlasgow A/P
55.8719N -4.4331E
1730
1720
14.32
16
1.68
7.75
7
-0.75
2917
3600
683
1036.4
1036
-0.4
294
300
6
11
12
1
YEdinburgh A/P
55.9500N -3.3500E
1730
1720
16.03
18
1.97
7.45
7
-0.45
3778
4400
622
1035.6
1035
-0.6
274
250
24
12
11
-1
ZHeathrow A/P
51.4775N -0.4614E
1730
1720
22.39
26
3.61
10.53
1
-9.53
5329
10000
4671
1034.5
1034
-0.5
314
280
34
6
6
0
1Southampton A/P
50.9499N -1.3585E
1630
1620
23.25
24
0.75
7.20
10
2.8
6529
5600
-929
1034.9
1035
0.1
311
220
91
4
5
1
2Leeds A/P
53.8618N -1.6653E
1600
1550
18.12
18
-0.12
11.11
10
-1.11
3487
3200
-287
1035.6
1036
0.4
290
240
50
11
10
-1
3Dublin A/P
53.4215N -6.2977E
1730
1730
13.53
16
2.47
10.59
10
-0.59
1437
2400
963
1036.9
1037
0.1
127
140
13
10
9
-1
Stornaway A/P
58.2156N -6.3311E
1730
1720
11.25
13
1.75
5.56
6
0.44
2472
2800
328
1034.3
1034
-0.3
243
240
3
16
14
-2
4Tiree
56.5000N -6.8828E
1730
1720
12.02
13
0.98
7.36
9
1.64
1914
1600
-314
1036.7
1037
0.3
247
270
23
10
13
3
5Benbecula
57.4811N -7.3628E
1730
1720
9.99
13
3.01
7.85
8
0.15
1049
2000
951
1035.5
1035
-0.5
234
240
6
13
14
1
6Ronaldsway A/P
54.0853N -4.6320E
1730
1720
12.80
17
4.2
7.84
7
-0.84
2970
4000
1030
1037.0
1037
0
334
010
36
4
7
3
RAF Boulmer
55.4209N -1.6012E
1700
1650
10.54
15
4.46
6.16
9
2.84
2607
2400
-207
1035.6
1035
-0.6
47
060
13
7
9
2
Aberdeen A/P
57.2049N -2.2053E
1730
1720
12.28
15
2.72
6.24
5
-1.24
2800
4000
1200
1035.0
1035
0
140
140
0
12
12
0
Birmingham A/P
52.4602N -1.7576E
1700
1650
19.79
22
2.21
12.88
11
-1.88
3447
4400
953
1035.2
1035
-0.2
19
320
59
7
10
3
Humberside A/P
53.5744N -0.3508E
1730
1720
17.16
21
3.84
12.13
11
-1.13
2300
4000
1700
1035.1
1036
0.9
69
320
109
7
5
-2
Staverton A/P
51.8923N -2.1608E
1600
1550
20.92
22
1.08
13.70
12
-1.7
3248
4000
752
1035.4
1035
-0.4
325
320
5
4
5
1
Islay A/P
55.6814N -6.2498E
1730
1720
11.81
14
2.19
7.86
6
-1.86
1753
3200
1447
1037.3
1037
-0.3
291
290
1
9
9
0
Eglinton A/P
55.0428N -7.1611E
1730
1720
13.91
16
2.09
8.53
8
-0.53
2400
3200
800
1037.0
1037
0
61
060
1
8
9
1
Southend A/P
51.5714N 0.6956W
1730
1720
22.20
23
0.8
8.35
9
0.65
5654
5600
-54
1034.4
1034
-0.4
43
070
27
4
4
0
Biggin Hill A/P
51.3308N 0.0325W
1730
1720
22.67
24
1.33
8.23
7
-1.23
6755
6800
45
1034.3
1035
0.7
305
290
15
6
6
0
London City A/P
51.5053N 0.0553W
1730
1720
24.17
26
1.83
4.97
6
1.03
7746
8000
254
1034.1
1034
-0.1
345
VRB
0
7
5
-2
East Midlands A/P
52.8311N -1.3281E
1730
1720
20.16
21
0.84
13.40
11
-2.4
3116
4000
884
1035.3
1035
-0.3
321
270
51
6
9
3
Doncaster A/P
53.4747N -1.0044E
1730
1720
20.09
20
-0.09
12.16
11
-1.16
3436
3600
164
1035.2
1036
0.8
275
290
15
8
11
3
Liverpool A/P
53.3340N -2.8500E
1730
1720
14.07
19
4.93
10.42
11
0.58
2111
3200
1089
1036.6
1037
0.4
304
320
16
12
8
-4
Wick A/P
58.4589N -3.0931E
1730
1720
14.20
16
1.8
5.78
4
-1.78
3702
4800
1098
1033.8
1034
0.2
270
280
10
11
8
-3
7Pembrey Sands Stn
51.7144N -4.3675E
1700
1650
15.41
16
0.59
13.07
14
0.93
1055
800
-255
1036.3
1037
0.7
251
270
19
9
8
-1
0RNAS Yeovilton
51.0063N -2.6428E
1730
1721
20.34
23
2.66
12.77
9
-3.77
3381
5600
2219
1035.3
1035
-0.3
318
310
8
7
8
1


Table Averages
Difference Averages: Dry: 1.96° C - Wet: -0.81° C - Wind Speed: 0.13 Knots (RASP Low) - Wind Deviation: 24.4 Degrees - Pressure: -0 mb - Cloudbase: 690 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 (2138 hours) for EGNC - report not usable.
EGWC (D) RAF Cosford - METAR report more than six hours old (532 hours) for EGWC - report not usable.
EGEC (L) Cambel Town - METAR report more than six hours old (7 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