West Meadowlark Weather

 Latitude N 53° 36' 27"    Longitude W 113° 31' 23"    Elevation 681 m

A list of all previous thunderstorms and their evaluation breakdowns from August 2020 onwards.

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2020
2021
2022
2023
2024
2025
Evaluations
Table updated: 10-01-25 @ 23:18 MDT
Thunderstorm Evaluations
April 2025
Date Time Lightning Rate Thunder Rate Hail Rain Rate Wind Length Points (of 10)
May
May 23rd 2:51PM 1 2 0 2 3 2 1.72
May 23rd 4:28PM 3 6 0 5 4 5 4.04
May 26th 4:30PM 5 7 0 7 6 10 6.08
June
June 1st 4:00PM 2 4 0 2 3 5 2.88
June 13th 5:15PM 4 10 4 5 1 10 5.70
June 15th 6:30PM 4 5 5 5 4 6 4.66
June 18th 12:32PM 5 6 0 3 1 8 4.36
June 23rd 5:25AM 1 3 0 4 2 4 2.22
June 25th 3:55PM 6 6 0 6 6 6 5.52
June 27th 5:15PM 2 3 0 3 1 3 2.10
July
July 1st 7:10AM 3 4 0 2 2 3 2.72
July 24th 4:38PM 1 4 0 5 2 4 2.50
July 25th 12:50AM 5 5 0 4 4 10 5.04
August
August 2nd 3:15PM 6 6 4 5 3 10 5.78
August 12th 9:25PM 4 4 0 5 6 8 4.68
August 16th 10:00PM 7 7 2 9 6 7 6.58
August 18th 9:05PM 2 1 5 6* 2 3 2.48
September
October
October 1st 6:55PM 1 1 0 2 2 3 1.46
Table updated: 10-01-25 @ 23:18 MDT
Thunderstorm Evaluations
April 2025
Date Time Lght Rate Thnd Rate Hail Rain Rate Wind Leng Pnts
May
May 23rd 2:51PM 1 2 0 2 3 2 1.72
May 23rd 4:28PM 3 6 0 5 4 5 4.04
May 26th 4:30PM 5 7 0 7 6 10 6.08
June
June 1st 4:00PM 2 4 0 2 3 5 2.88
June 13th 5:15PM 4 10 4 5 1 10 5.70
June 15th 6:30PM 4 5 5 5 4 6 4.66
June 18th 12:32PM 5 6 0 3 1 8 4.36
June 23rd 5:25AM 1 3 0 4 2 4 2.22
June 25th 3:55PM 6 6 0 6 6 6 5.52
June 27th 5:15PM 2 3 0 3 1 3 2.10
July
July 1st 7:10AM 3 4 0 2 2 3 2.72
July 24th 4:38PM 1 4 0 5 2 4 2.50
July 25th 12:50AM 5 5 0 4 4 10 5.04
August
August 2nd 3:15PM 6 6 4 5 3 10 5.78
August 12th 9:25PM 4 4 0 5 6 8 4.68
August 16th 10:00PM 7 7 2 9 6 7 6.58
August 18th 9:05PM 2 1 5 6* 2 3 2.48
September
October
October 1st 6:55PM 1 1 0 2 2 3 1.46
Table updated: 10-01-25 @ 23:18 MDT
Thunderstorm Evaluations
April 2025
Date Time LR TR Ha RR Wn Ln Pt
May
May 23 2:51P 1 2 0 2 3 2 1.72
May 23 4:28P 3 6 0 5 4 5 4.04
May 26 4:30P 5 7 0 7 6 10 6.08
June
Jun 1 4:00P 2 4 0 2 3 5 2.88
Jun 13 5:15P 4 10 4 5 1 10 5.70
Jun 15 6:30P 4 5 5 5 4 6 4.66
Jun 18 12:32P 5 6 0 3 1 8 4.36
Jun 23 5:25A 1 3 0 4 2 4 2.22
Jun 25 3:55P 6 6 0 6 6 6 5.52
Jun 27 5:15P 2 3 0 3 1 3 2.10
July
Jul 1 7:10A 3 4 0 2 2 3 2.72
Jul 24 4:38P 1 4 0 5 2 4 2.50
Jul 25 12:50A 5 5 0 4 4 10 5.04
August
Aug 2 3:15P 6 6 4 5 3 10 5.78
Aug 12 9:25P 4 4 0 5 6 8 4.68
Aug 16 10:00P 7 7 2 9 6 7 6.58
Aug 18 9:05P 2 1 5 6* 2 3 2.48
September
October
Oct 1 6:55P 1 1 0 2 2 3 1.46
Table updated: 09-03-24 @ 10:17 MDT
Thunderstorm Evaluations
Date Time Lightning Rate Thunder Rate Hail Rain Rate Wind Length Points (of 10)
May 2024
May 26th 2:05PM 0 1 0 3 1 2 1.00
June
June 11th 4:50PM 6 6 0 5 7 10 6.18
June 14th 4:10PM 7 10 0 2 2 7 5.80
July
July 11th 8:15PM 1 2 0 1 4 3 1.96
August
August 4th 8:55PM 2 2 0 2 2 6 2.4
August 13th 8:07AM 6 6 0 4 1 7 4.6
August 19th 7:40PM 3 4 0 1 2 3 2.64
August 24th 2:15AM 8 6 0 4 3 10 5.98
September
September 2nd 9:05PM 7 7 0 3 5 7 5.76
Table updated: 09-03-24 @ 10:17 MDT
Thunderstorm Evaluations
Date Time Lght Rate Thnd Rate Hail Rain Rate Wind Leng Pnts
May 2024
May 26th 2:05PM 0 1 0 3 1 2 1.00
June
June 11th 4:50PM 6 6 0 5 7 10 6.18
June 14th 4:10PM 7 10 0 2 2 7 5.80
July
July 11th 8:15PM 1 2 0 1 4 3 1.96
August
August 4th 8:55PM 2 2 0 2 2 6 2.4
August 13th 8:07AM 6 6 0 4 1 7 4.6
August 19th 7:40PM 3 4 0 1 2 3 2.64
August 24th 2:15AM 8 6 0 4 3 10 5.98
September
September 2nd 9:05PM 7 7 0 3 5 7 5.76
Table updated: 09-03-24 @ 10:17 MDT
Thunderstorm Evaluations
Date Time LR TR Ha RR Wn Ln Pt
May 2024
May 26 2:05P 0 1 0 3 1 2 1.00
June
Jun 11 4:50P 6 6 0 5 7 10 6.18
Jun 14 4:10P 7 10 0 2 2 7 5.80
July
Jul 11 8:15P 1 2 0 1 4 3 1.96
August
Aug 4 8:55P 2 2 0 2 2 6 2.4
Aug 13 8:07A 6 6 0 4 1 7 4.6
Aug 19 7:40P 3 4 0 1 2 3 2.64
Aug 24 2:15A 8 6 0 4 3 10 5.98
September
Sep 2 9:05P 7 7 0 3 5 7 5.76
Table updated: 06-14-24 @ 19:27 MDT
Thunderstorm Evaluations
May 2023
Date Time Lightning Rate Thunder Rate Hail Rain Rate Wind Length Points (of 10)
May 8th 1:40PM 4 8 0 1 2 7 4.38
May 9th 5:10PM 5 6 0 0 3 8 4.48
May 11th 7:10PM 4 5 0 2 2 3 3.24
May 23rd 1:20AM 2 2 0 10 2 5 2.90
May 29th 2:12PM 2 4 0 3 3 5 2.96
May 30th 6:05PM 4 4 3 4 5 10 4.94
May 30th 8:35PM 5 10 0 2 2 10 5.62
May 31th 6:20PM 8 9 0 3 5 10 6.92
June
June 13th 07:05AM 4 4 0 10 3 10 4.82
June 25th 01:50AM 3 3 0 0 0 3 1.98
July
July 1st 11:35AM 3 3 3 9 2 4 3.44
July 1st 6:05PM 2 3 0 2 2 3 2.20
July 16th 12:35AM 6 6 0 10 4 10 6.38
July 24th 01:20AM 7 8 0 10 6 10 7.06
July 30th 9:40PM 5 5 0 7 5 7 5.05
August
August 9th 7:15PM 2 3 0 10 2 4 2.78
August 17th 7:15PM 9 8 2 10 5 4 6.88
August 17th 10:30PM 3 4 0 2 3 5 3.18
Table updated: 06-14-24 @ 19:27 MDT
Thunderstorm Evaluations
May 2023
Date Time Lght Rate Thnd Rate Hail Rain Rate Wind Leng Pnts
May 8th 1:40PM 4 8 0 1 2 7 4.38
May 9th 5:10PM 5 6 0 0 3 8 4.48
May 11th 7:10PM 4 5 0 2 2 3 3.24
May 23rd 1:20AM 2 2 0 10 2 5 2.90
May 29th 2:12PM 2 4 0 3 3 5 2.96
May 30th 6:05PM 4 4 3 4 5 10 4.94
May 30th 8:35PM 5 10 0 2 2 10 5.62
May 31th 6:20PM 8 9 0 3 5 10 6.92
June
June 13th 07:05AM 4 4 0 10 3 10 4.82
June 25th 01:50AM 3 3 0 0 0 3 1.98
July
July 1st 11:35AM 3 3 3 9 2 4 3.44
July 1st 6:05PM 2 3 0 2 2 3 2.20
July 16th 12:35AM 6 6 0 10 4 10 6.38
July 24th 01:20AM 7 8 0 10 6 10 7.06
July 30th 9:40PM 5 5 0 7 5 7 5.05
August
August 9th 7:15PM 2 3 0 10 2 4 2.78
August 17th 7:15PM 9 8 2 10 5 4 6.88
August 17th 10:30PM 3 4 0 2 3 5 3.18
Table updated: 06-14-24 @ 19:27 MDT
Thunderstorm Evaluations
May 2023
Date Time LR TR Ha RR Wn Ln Pt
May 8 1:40P 4 8 0 1 2 7 4.38
May 9 5:10P 5 6 0 0 3 8 4.48
May 11 7:10P 4 5 0 2 2 3 3.24
May 23 1:20A 2 2 0 10 2 5 2.90
May 29 2:12P 2 4 0 3 3 5 2.96
May 30 6:05P 4 4 3 4 5 10 4.94
May 30 8:35P 5 10 0 2 2 10 5.62
May 31 6:20P 8 9 0 3 5 10 6.92
June
June 13 7:05A 4 4 0 10 3 10 4.82
June 25 1:50A 3 3 0 0 0 3 1.98
July
July 1 11:35A 3 3 3 9 2 4 3.44
July 1 6:05P 2 3 0 2 2 3 2.20
July 16 12:35A 6 6 0 10 4 10 6.38
July 24 01:20A 7 8 0 10 6 10 7.06
Jul 30 9:40P 5 5 0 7 5 7 5.05
August
Aug 9 7:15P 2 3 0 10 2 4 2.78
Aug 17 7:15P 9 8 2 10 5 4 6.88
Aug 17 10:30P 3 4 0 2 3 5 3.18
Table updated: 09-16-22 @ 00:49 MDT
Thunderstorm Evaluations
May 2022
Date Time Lightning Rate Thunder Rate Hail Rain Rate Wind Length Points (of 10)
May 16th 8:45PM 4 3 0 1 2 7 3.34
May 25th 9:30PM 7 7 0 6 4 9 5.10
May 27th 9:00PM 4 4 0 3 6 8 4.52
June
June 8th 5:45PM 2 3 0 5* 2 4 2.58
June 8th 7:02PM 1 2 0 2 2 3 1.68
June 17th 12:45AM 3 4 0 5 3 6 3.46
June 22nd 2:38PM 3 4 0 5 4 6 3.74
July
July 7th 8:45PM 6 5 3 10 4 10 6.06
July 9th 5:45PM 2 4 0 3 3 5 2.96
July 31st 12:35PM 2 3 0 6 2 4 2.66
August
August 4th 2:35AM 3 3 0 7 1 3 2.72
August 4th 7:50AM 1 3 0 3 2 10 2.96
August 13th 8:45PM 3 2 0 0 5 5 2.94
September
September 7th 7:10PM 2 3 0 4 3 5 2.82
September 15th 7:45PM 6 6 0 7 3 8 5.34
Table updated: 09-16-22 @ 00:49 MDT
Thunderstorm Evaluations
May 2022
Date Time Lght Rate Thnd Rate Hail Rain Rate Wind Leng Pnts
May 16th 8:45PM 4 3 0 1 2 7 3.34
May 25th 9:30PM 7 7 0 6 4 9 5.10
May 27th 9:00PM 4 4 0 3 6 8 4.52
June
June 8th 5:45PM 2 3 0 5* 2 4 2.58
June 8th 7:02PM 1 2 0 2 2 3 1.68
June 17th 12:45AM 3 4 0 5 3 6 3.46
June 22nd 2:38PM 3 4 0 5 4 6 3.74
July
July 7th 8:45PM 6 5 3 10 4 10 6.06
July 9th 5:45PM 2 4 0 3 3 5 2.96
July 31st 12:35PM 2 3 0 6 2 4 2.66
August
August 4th 2:35AM 3 3 0 7 1 3 2.72
August 4th 7:50AM 1 3 0 3 2 10 2.96
August 13th 8:45PM 3 2 0 0 5 5 2.94
September
September 7th 7:10PM 2 3 0 4 3 5 2.82
September 15th 7:45PM 6 6 0 7 3 8 5.34
Table updated: 09-16-22 @ 00:49 MDT
Thunderstorm Evaluations
May 2022
Date Time LR TR Ha RR Wn Ln Pt
May 16 8:45P 4 3 0 1 2 7 3.34
May 25 9:30P 7 7 0 6 4 9 5.10
May 27 9:00P 4 4 0 3 6 8 4.52
June
Jun 8 5:45P 2 3 0 5* 2 4 2.58
Jun 8 7:02P 1 2 0 2 2 3 1.68
Jun 17 12:45A 3 4 0 5 3 6 3.46
Jun 22 2:38P 3 4 0 5 4 6 3.74
July
Jul 7 8:45P 6 5 3 10 4 10 6.06
Jul 9 5:45P 2 4 0 3 3 5 2.96
Jul 31 12:35P 2 3 0 6 2 4 2.66
August
Aug 4 2:35A 3 3 0 7 1 3 2.72
Aug 4 7:50A 1 3 0 3 2 10 2.96
Aug 13 8:45P 3 2 0 0 5 5 2.94
September
Sep 7 7:10P 2 3 0 4 3 5 2.82
Sep 15 7:45P 6 6 0 7 3 8 5.34
Table updated: 12-16-21 @ 08:21 MST
Thunderstorm Evaluations
April 2021
Date Time Lightning Rate Thunder Rate Hail Rain Rate Wind Length Points (of 10)
April 10th 2:36PM 1 4 0 0 4 4 2.56
May
May 11th 4:40PM 1 1 2 5 2 3 1.72
May 17th 7:25PM 3 3 0 3 2 8 3.28
May 27th 10:30PM 6 3 0 0 6 7 4.52
June
June 4th 2:25PM 2 3 2 5 2 10 3.58
June 14th 6:00AM 0 2 0 3 1 3 1.28
June 14th 10:35AM 2 3 0 1 2 4 2.36
June 14th 9:30PM 4 3 0 0 1 4 2.60
June 14th 10:30PM 10 8 0 1 2 10 6.60
June 15th 11:00AM 3 3 0 1 5 7 3.32
July
July 2nd 10:25PM 1 2 0 0 4 4 1.02
July 15th 12:50AM 3 2 0 1 2 4 2.26
July 21st 10:00PM 9 7 0 10 4 10 7.26
July 27th 2:40AM 4 5 0 10 6 8 5.30
August
August 3rd 9:30PM 6 6 0 4 5 5 5.04
August 7th 9:05AM 5 6 0 10 3 10 5.56
September
September 18th 10:05PM 3 3 0 2 2 6 2.92
September 22nd 8:00PM 5 5 2 5 3 10 6.10
Table updated: 12-16-21 @ 08:21 MST
Thunderstorm Evaluations
April
Date Time Lght Rate Thnd Rate Hail Rain Rate Wind Leng Pnts
April 10th 2:36PM 1 4 0 0 4 4 2.56
May
May 11th 4:40PM 1 1 2 5 2 3 1.72
May 17th 7:25PM 3 3 0 3 2 8 3.28
May 27th 10:30PM 6 3 0 0 6 7 4.52
June
June 4th 2:25PM 2 3 2 5 2 10 3.58
June 14th 06:00AM 0 2 0 3 1 3 1.28
June 14th 10:35AM 2 3 0 1 2 4 2.36
June 14th 9:30PM 4 3 0 0 1 4 2.60
June 14th 10:30PM 10 8 0 1 2 10 6.60
June 15th 11:00AM 3 3 0 1 5 7 3.32
July
July 2nd 10:25PM 1 2 0 0 4 4 1.02
July 15th 12:50AM 3 2 0 1 2 4 2.26
July 21st 10:00PM 9 7 0 10 4 10 7.26
July 27th 2:40AM 4 5 0 10 6 8 5.30
August
August 3rd 9:30PM 6 6 0 4 5 5 5.04
August 7th 9:05AM 5 6 0 10 3 10 5.56
September
September 18th 10:05PM 3 3 0 2 2 6 2.92
September 22nd 8:00PM 5 5 2 5 3 10 6.10
Table updated: 12-16-21 @ 08:21 MST
Thunderstorm Evaluations
April
Date Time LR TR Ha RR Wn Ln Pt
Apr 10 2:36P 1 4 0 0 4 4 2.56
May
May 11 4:40P 1 1 2 5 2 3 1.72
May 17 7:25P 3 3 0 3 2 8 3.28
May 27 10:30P 6 3 0 0 6 7 4.52
June
Jun 4 2:25P 2 3 2 5 2 10 3.58
Jun 14 06:00A 0 2 0 3 1 3 1.28
Jun 14 10:35A 2 3 0 1 2 4 2.36
Jun 14 9:30P 4 3 0 0 1 4 2.60
Jun 14 10:30P 10 8 0 1 2 10 6.60
Jun 15 11:00A 3 3 0 1 5 7 3.32
July
Jul 2 10:25P 1 2 0 0 4 4 1.02
Jul 15 12:50A 3 2 0 1 2 4 2.26
Jul 21 10:00P 9 7 0 10 4 10 7.26
Jul 27 2:40A 4 5 0 10 6 8 5.30
August
Aug 3 9:30P 6 6 0 4 5 5 5.04
Aug 7 9:05A 5 6 0 10 3 10 5.56
September
Sep 18 10:05P 3 3 0 2 2 6 2.92
Sep 22 8:00P 5 5 2 5 3 10 6.10
August 2020
Date Time Lightning Rate Thunder Rate Hail Rain Rate Wind Length Points (of 10)
August 3rd 8:55AM 4 6 0 2 2 10 4.2
August 3rd 6:00PM 7 8 0 9 5 10 6.51
August 11th 5:45PM 6 7 0 3 6 10 5.60
August 22nd 7:25AM 2 2 0 3 1 4 1.95
August 24th 6:50PM 2 3 0 1 5 10 3.20
August 26th 3:15AM 7 5 0 6 3 6 4.70
August 26th 5:30PM 5 5 0 3 3 5 3.75
August 2020
Date Time Lght Rate Thnd Rate Hail Rain Rate Wind Leng Pnts
Aug 3 8:55AM 4 6 0 2 2 10 4.2
Aug 3 6:00PM 7 8 0 9 5 10 6.51
Aug 11 5:45PM 6 7 0 3 6 10 5.60
Aug 22 7:25AM 2 2 0 3 1 4 1.95
Aug 24 6:50PM 2 3 0 1 5 10 3.20
Aug 26 3:15AM 7 5 0 6 3 6 4.70
Aug 26 5:30PM 5 5 0 3 3 5 3.75
August 2020
Date Time LR TR Ha RR Wn Ln Pt
Aug 3 8:55A 4 6 0 2 2 10 4.2
Aug 3 6:00P 7 8 0 9 5 10 6.51
Aug 11 5:45P 6 7 0 3 6 10 5.60
Aug 22 7:25A 2 2 0 3 1 4 1.95
Aug 24 6:50P 2 3 0 1 5 10 3.20
Aug 26 3:15A 7 5 0 6 3 6 4.70
Aug 26 5:30P 5 5 0 3 3 5 3.75
Storm Evaluation Weights
2020 and earlier
2021 and later
Evaluation values for 2021 and later
Unit Value Points Weight Max Points
Lightning Rate Isol to Cont /10 0.30 Up to 3.0
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Thunder Rate Isol to Cont /10 0.22 Up to 2.2
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Hail TiLt to HuHv /10 0.08 Up to 0.8
Tiny 1
Small 2
Medium 3
Large 4
Huge 5
Light +1 to +2
Moderate +3 to +4
Heavy +5
Rain Rate Lght to Torr /10 0.08 Up to 0.8
Pk RR 0 ~ 10 1 to 2
Pk RR 10 ~ 20 2 to 3
Pk RR 20 ~ 30 3 to 4
Pk RR 30 ~ 40 4 to 5
Pk RR 40 ~ 50 5
Pk RR 50 ~ 60 5 to 6
Pk RR 60 ~ 70 6 to 7
Pk RR 70 ~ 80 7 to 8
Pk RR 80 ~ 90 8 to 9
Pk RR 90 ~ 100 9
Pk RR 100+ 10
* Short rainfall windows may incurr rating penalties
Wind Speed Lght to VHgh /10 0.08 Up to 0.8
Pk HW 0 ~ 20 1 to 2
Pk HW 20 ~ 40 2 to 4
Pk HW 40 ~ 70 5 to 8
Pk HW 70 ~ 100 9 to 10
Pk HW 100+ 10
Length Max at 60 min /10 0.14 Up to 1.4
Points - - 1.00 Up to 10
Evaluation values for 2020 and earlier
Unit Value Points Weight Max Points
Lightning Rate Isol to Cont /10 0.25 Up to 2.5
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Thunder Rate Isol to Cont /10 0.20 Up to 2.0
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Hail TiLt to HuHv /10 0.15 Up to 1.5
Tiny 1
Small 2
Medium 3
Large 4
Huge 5
Light +1 to +2
Moderate +3 to +4
Heavy +5
Rain Rate Lght to Torr /10 0.10 Up to 1.0
Lght 1 to 2
Medi 3 to 5
Heav 5 to 7
VHea 8 to 9
Torr 10
* Short rainfall windows may incurr rating penalties
Wind Speed Lght to VHgh /10 0.15 Up to 1.5
Lght 1 to 2
Medi 2 to 4
High 5 to 8
VHgh 9 to 10
Length Max at 60 min /10 0.15 Up to 1.5
Points - - 1.00 Up to 10
Evaluation values for 2021 and later
Unit Value Points Weight Max Points
Lightning Rate Isol to Cont /10 0.30 Up to 3.0
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Thunder Rate Isol to Cont /10 0.22 Up to 2.2
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Hail TiLt to HuHv /10 0.08 Up to 0.8
Tiny 1
Small 2
Medium 3
Large 4
Huge 5
Light +1 to +2
Moderate +3 to +4
Heavy +5
Rain Rate Lght to Torr /10 0.08 Up to 0.8
Pk RR 0 ~ 10 1 to 2
Pk RR 10 ~ 20 2 to 3
Pk RR 20 ~ 30 3 to 4
Pk RR 30 ~ 40 4 to 5
Pk RR 40 ~ 50 5
Pk RR 50 ~ 60 5 to 6
Pk RR 60 ~ 70 6 to 7
Pk RR 70 ~ 80 7 to 8
Pk RR 80 ~ 90 8 to 9
Pk RR 90 ~ 100 9
Pk RR 100+ 10
* Short rainfall windows may incurr rating penalties
Wind Speed Lght to VHgh /10 0.08 Up to 0.8
Pk HW 0 ~ 20 1 to 2
Pk HW 20 ~ 40 2 to 4
Pk HW 40 ~ 70 5 to 8
Pk HW 70 ~ 100 9 to 10
Pk HW 100+ 10
Length Max at 60 min /10 0.14 Up to 1.4
Points - - 1.00 Up to 10
Evaluation values for 2020 and earlier
Unit Value Points Weight Max Points
Lightning Rate Isol to Cont /10 0.25 Up to 2.5
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Thunder Rate Isol to Cont /10 0.20 Up to 2.0
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Hail TiLt to HuHv /10 0.15 Up to 1.5
Tiny 1
Small 2
Medium 3
Large 4
Huge 5
Light +1 to +2
Moderate +3 to +4
Heavy +5
Rain Rate Lght to Torr /10 0.10 Up to 1.0
Lght 1 to 2
Medi 3 to 5
Heav 5 to 7
VHea 8 to 9
Torr 10
* Short rainfall windows may incurr rating penalties
Wind Speed Lght to VHgh /10 0.15 Up to 1.5
Lght 1 to 2
Medi 2 to 4
High 5 to 8
VHgh 9 to 10
Length Max at 60 min /10 0.15 Up to 1.5
Points - - 1.00 Up to 10
Evaluation values for 2021 and later
Unit Value Points Weight Max Points
LtRt Isol to Cont /10 0.30 Up to 3.0
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
ThRt Isol to Cont /10 0.22 Up to 2.2
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Hail TiLt to HuHv /10 0.08 Up to 0.8
Tiny 1
Small 2
Medium 3
Large 4
Huge 5
Light +1 to +2
Moderate +3 to +4
Heavy +5
RnRt Lght to Torr /10 0.08 Up to 0.8
Pk RR 0 ~ 10 1 to 2
Pk RR 10 ~ 20 2 to 3
Pk RR 20 ~ 30 3 to 4
Pk RR 30 ~ 40 4 to 5
Pk RR 40 ~ 50 5
Pk RR 50 ~ 60 5 to 6
Pk RR 60 ~ 70 6 to 7
Pk RR 70 ~ 80 7 to 8
Pk RR 80 ~ 90 8 to 9
Pk RR 90 ~ 100 9
Pk RR 100+ 10
* Short rainfall may incurr penalties
WnSp Lght to VHgh /10 0.08 Up to 0.8
Pk HW 0 ~ 20 1 to 2
Pk HW 20 ~ 40 2 to 4
Pk HW 40 ~ 70 5 to 8
Pk HW 70 ~ 100 9 to 10
Pk HW 100+ 10
Length Max 60m /10 0.14 Up to 1.4
Points - - 1.00 Up to 10
Evaluation values for 2020 and earlier
Unit Value Points Weight Max Points
LtRt Isol to Cont /10 0.25 Up to 2.5
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
ThRt Isol to Cont /10 0.20 Up to 2.0
Isolated 1 to 2
Low 2 to 3
Occasional 3 to 4
Scattered 4 to 5
Medium 4 to 6
Frequent 6 to 8
High 7 to 9
Continuous 10
Hail TiLt to HuHv /10 0.15 Up to 1.5
Tiny 1
Small 2
Medium 3
Large 4
Huge 5
Light +1 to +2
Moderate +3 to +4
Heavy +5
RnRt Lght to Torr /10 0.10 Up to 1.0
Lght 1 to 2
Medi 3 to 5
Heav 5 to 7
VHea 8 to 9
Torr 10
* Short rainfall windows may incurr rating penalties
WnSp Lght to VHgh /10 0.15 Up to 1.5
Lght 1 to 2
Medi 2 to 4
High 5 to 8
VHgh 9 to 10
Length Max at 60 min /10 0.15 Up to 1.5
Points - - 1.00 Up to 10