Yes you are correct they does seem to be an ENE drift to them the 12Z Camborne ascent has light winds at all levels up to 500 hPa.

hpa metres t dp rh ddd fff
995 88 7.8 5.8 87 130 2
992 113 8 3 71 170 2
985 172 7.4 3.5 77 265 2
978 231 6.8 4.1 83 275 5
961 375 5.4 3.5 87 300 11
952 452 4.6 3.1 90 298 11
940 556 3.8 2.3 90 295 11
938 573 3.6 2.2 91 295 11
929 652 2.8 1.9 94 292 12
925 687 2.6 1.6 93 290 12
924 696 2.5 1.5 93 290 12
919 740 2.2 1.2 93 295 12
911 810 1.8 0.3 90 303 12
894 962 0.8 -0.7 90 320 11
888 1016 0.5 -1 90 310 11
871 1171 -0.6 -2 90 270 5
869 1190 -0.7 -2.1 90 268 5
862 1254 -1.1 -2.2 92 259 7
859 1282 -1.2 -2.5 91 255 8
854 1329 -1.3 -2.9 89 255 7
850 1366 -1.7 -3.1 90 255 6
839 1470 -2.5 -3.6 92 219 5
828 1574 -3.1 -4.6 89 183 3
827 1584 -3.2 -4.6 90 180 3
818 1670 -3.7 -5 91 195 7
806 1787 -4.4 -5.4 92 180 1
804 1807 -4.5 -5.5 93 194 2
794 1905 -5.2 -7.8 82 265 8
793 1915 -5.3 -8 81 266 8
782 2024 -6 -8.8 81 280 7
769 2156 -6.8 -9.7 80 265 13
768 2166 -6.9 -9.8 80 263 13
759 2258 -7.5 -9.9 83 242 12
754 2309 -7.8 -10.2 83 230 11
743 2423 -8.5 -10.8 83 255 5
737 2486 -8.9 -11.2 84 230 4
728 2581 -9.5 -11.7 84 226 6
725 2613 -9.7 -11.8 85 225 6
718 2688 -10.3 -12 87 185 6
706 2817 -11 -13.3 83 95 2
705 2828 -11.1 -13.4 83 97 2
700 2883 -11.5 -13.5 85 105 2
693 2960 -12 -13.8 86 110 3
682 3082 -12.8 -14.4 88 230 1
676 3150 -13.3 -14.7 89 227 2
665 3274 -14.1 -15.8 87 220 3
652 3424 -15 -17 85 315 3
640 3565 -15.9 -18.2 82 287 6
627 3719 -17.3 -19.2 85 257 10
618 3828 -18.1 -20.4 82 235 12
612 3901 -18.7 -21.3 80 242 10
605 3986 -19.1 -21.2 83 250 7
592 4148 -20 -22.7 79 250 9
583 4262 -20.7 -23.8 76 253 7
576 4351 -21.3 -24.2 77 255 5
563 4519 -22.5 -25.9 73 260 2
556 4611 -23.1 -26.9 71 270 4
549 4703 -23.9 -27.2 74 280 6
539 4837 -24.9 -27.7 78 300 3
532 4933 -25.7 -28 81 291 5
510 5237 -27.9 -30.4 79 260 10
500 5380 -28.9 -31.5 78 265 7

Almost a repeat of yesterday but a little cooler (yesterdays max 16.7° at Bradninch)

======================

Showers are developing rapidly over Dartmoor early afternoon
(thunderstorms likely) and there are plenty over Cornwall slowly
advecting ENE'wards.

Stephen.