As at 8 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
5 wins · Yarmouth, Haydock & NewmarketLast run 12 Aug 2026 · 11th of 12Last raced off OR 88
KTB Profile
Cumulonimbus is a gelding who has won five of 19 starts, all on turf over 1m2f – 1m4f. He landed three handicaps in 2023, including a Class 2 success at Yarmouth on good to soft ground off 95 and another at Haydock on good to firm off 89. He has also won twice at Haydock and twice at Yarmouth. He finished 11 of 12 at Kempton on the all-weather in Aug 2026, last raced off 88.
Based on 19 archived runs · run-style from 2 commented runs since Jun 2025 · updated 8 Nov 2026
A/E compares actual wins with what starting prices implied. "Fair" strips the bookmaker margin from the expectation, so favourites and longshots are judged on the same footing — figures near 1.00 mean the market priced this horse about right.
Official rating88↓ 11lb off peak
8871–99
KTB Speed and Rating
KTB Speed
Best recent Speed109the best of the last 3 graded (A or B) runs · Kempton (AW), 27 Jan 2024
How fast the horse ran, as points against the day-corrected standard time for its course and distance: 100 is the median GB Class 4 handicap winner on that code; one point is 0.1% of the standard time. A, B or C is how much the day's card could tell us, not how good the run was. What this means →
Flat 19 figures · best 119A · median 80
Going
Runs
Best
Median
Since 8 Nov 2025
Good to Firm
5
100A
75
—
Good to Soft
5
108A
79
—
Standard (AW)
4
109A
93
1 run · —
Good
3
88C
80
—
Soft
2
119A
94
—
Distance
Runs
Best
Median
Since 8 Nov 2025
1m2f – 1m4f
16
119A
82
1 run · —
1m – 1m1f
2
76C
51
—
6f – 7f
1
—
—
—
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 19 figures from 19 runs · as at 3 Oct 2026 · a record, not a forecast
KTB Rating
Best recent KTB Rating76Athe best of the last 3 rated runs · Ascot, 13 Jul 2024Official rating 88at the last run, 12 Aug 2026
What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →
Flat 19 figures · best 102A · median 77
Going
Runs
Best
Median
Since 8 Nov 2025
Good to Firm
5
90A
83
—
Good to Soft
5
102A
84
—
Standard (AW)
4
77A
70
1 run · —
Good
3
86A
76
—
Soft
2
95A
92
—
Distance
Runs
Best
Median
Since 8 Nov 2025
1m2f – 1m4f
16
102A
80
1 run · —
1m – 1m1f
2
75A
72
—
6f – 7f
1
—
—
—
KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 19 figures from 19 runs · as at 4 Oct 2026 · a record, not a forecast
Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.
Splits include every sample, however small — muted rows are under 3 runs. A one-from-one record is a fact, not a trend: read the Runs column before the strike rate.
Michael Foster Memorial Handicap (GBBPlus Race)Class 3 · 1m3½f · Good To Firm · 9 ranSet the early pace - overtaken after 4f - pushed along 3f out and slipped back through the field - dropped away steadily from 2f out to finish well behind
Cumulonimbus (IRE) won 5 of 19 archived starts between 2021 and 2026, a strike rate of 26.3%. Placed 8 times in total (42.1% of starts).
Who trains Cumulonimbus?
Cumulonimbus (IRE) is trained by George Baker, who saddled the horse on its most recent run on 12 August 2026.
Who is Cumulonimbus's sire?
Cumulonimbus (IRE) is by Night Of Thunder (IRE) out of Queen's Novel (GB), whose sire is King's Best.
What going does Cumulonimbus prefer?
Cumulonimbus (IRE) has the best record on good to soft going: 3 wins from 5 starts (60%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Cumulonimbus's official rating?
The most recent official rating on record is 88, from the run on 12 August 2026. The highest on record is 99.
What is Cumulonimbus's sire's record?
Night Of Thunder (IRE)'s progeny in our archive have won 16.3% of 5,119 runs since Apr 2019 (564 horses), Flat and jumps together. Weakest over 1m5f – 2m (all codes): 6.9% from 160.
Who are Cumulonimbus's siblings?
Out of Queen's Novel (GB), Cumulonimbus (IRE) has 3 other produce in our archive, 1 of them a winner. Most wins: Artificer (IRE) (1). Highest grade won: Class 6 (Artificer (IRE)). The wins came over 1m. As at Nov 2026.
Cumulonimbus (IRE)·5–19·SR 26.3%
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