default:

GFS HRRR 3 km

GEM HRDPS 2.5

GFS HRRR 3

GEM regional 10

UKMO Global 10

DWD ICON Global 11

GFS GRAPES 13

GFS global 13

BOM ACCESS 15

GEM Global 15

ECMWF IFS 25

GFS GraphCast 25

JMA gSM 55

MF Arpege 55

Modèle	GFS HRRR 3 km run: 13/05 10:46																														GFS 13 km run: 13/05 10:46																																																																unknown run: 13/05 10:46
Date Optimal	Ma 13 6h	Ma 13 7h	Ma 13 8h	Ma 13 9h	Ma 13 10h	Ma 13 11h	Ma 13 12h	Ma 13 13h	Ma 13 14h	Ma 13 15h	Ma 13 16h	Ma 13 17h	Ma 13 18h	Ma 13 19h	Ma 13 20h	Me 14 6h	Me 14 7h	Me 14 8h	Me 14 9h	Me 14 10h	Me 14 11h	Me 14 12h	Me 14 13h	Me 14 14h	Me 14 15h	Me 14 16h	Me 14 17h	Me 14 18h	Me 14 19h	Me 14 20h	Je 15 6h	Je 15 7h	Je 15 8h	Je 15 9h	Je 15 10h	Je 15 11h	Je 15 12h	Je 15 13h	Je 15 14h	Je 15 15h	Je 15 16h	Je 15 17h	Je 15 18h	Je 15 19h	Je 15 20h	Ve 16 6h	Ve 16 7h	Ve 16 8h	Ve 16 9h	Ve 16 10h	Ve 16 11h	Ve 16 12h	Ve 16 13h	Ve 16 14h	Ve 16 15h	Ve 16 16h	Ve 16 17h	Ve 16 18h	Ve 16 19h	Ve 16 20h	Sa 17 6h	Sa 17 7h	Sa 17 8h	Sa 17 9h	Sa 17 10h	Sa 17 11h	Sa 17 12h	Sa 17 13h	Sa 17 14h	Sa 17 15h	Sa 17 16h	Sa 17 17h	Sa 17 18h	Sa 17 19h	Sa 17 20h	Di 18 6h	Di 18 7h	Di 18 8h	Di 18 9h	Di 18 10h	Di 18 11h	Di 18 12h	Di 18 13h	Di 18 14h	Di 18 15h	Di 18 16h	Di 18 17h	Di 18 18h	Di 18 19h	Di 18 20h	Lu 19 6h	Lu 19 7h	Lu 19 8h	Lu 19 9h	Lu 19 10h	Lu 19 11h	Lu 19 12h	Lu 19 13h	Lu 19 14h	Lu 19 15h	Lu 19 16h	Lu 19 17h	Lu 19 18h	Lu 19 19h	Lu 19 20h	Ma 20 6h	Ma 20 7h	Ma 20 8h	Ma 20 9h	Ma 20 10h	Ma 20 11h	Ma 20 12h	Ma 20 13h	Ma 20 14h	Ma 20 15h	Ma 20 16h	Ma 20 17h	Ma 20 18h	Ma 20 19h	Ma 20 20h	Me 21 6h	Me 21 7h	Me 21 8h	Me 21 9h	Me 21 10h	Me 21 11h	Me 21 12h	Me 21 13h	Me 21 14h	Me 21 15h	Me 21 16h	Me 21 17h	Me 21 18h	Me 21 19h	Me 21 20h	Je 22 6h	Je 22 7h	Je 22 8h	Je 22 9h	Je 22 10h	Je 22 11h	Je 22 12h	Je 22 13h	Je 22 14h	Je 22 15h	Je 22 16h	Je 22 17h	Je 22 18h	Je 22 19h	Je 22 20h	Ve 23 6h	Ve 23 7h	Ve 23 8h	Ve 23 9h	Ve 23 10h	Ve 23 11h	Ve 23 12h	Ve 23 13h	Ve 23 14h	Ve 23 15h	Ve 23 16h	Ve 23 17h	Ve 23 18h	Ve 23 19h	Ve 23 20h	Sa 24 6h	Sa 24 7h	Sa 24 8h	Sa 24 9h	Sa 24 10h	Sa 24 11h	Sa 24 12h	Sa 24 13h	Sa 24 14h	Sa 24 15h	Sa 24 16h	Sa 24 17h	Sa 24 18h	Sa 24 19h	Sa 24 20h	Di 25 6h	Di 25 7h	Di 25 8h	Di 25 9h	Di 25 10h	Di 25 11h	Di 25 12h	Di 25 13h	Di 25 14h	Di 25 15h	Di 25 16h	Di 25 17h	Di 25 18h	Di 25 19h	Di 25 20h	Lu 26 6h	Lu 26 7h	Lu 26 8h	Lu 26 9h	Lu 26 10h	Lu 26 11h	Lu 26 12h	Lu 26 13h	Lu 26 14h	Lu 26 15h	Lu 26 16h	Lu 26 17h	Lu 26 18h	Lu 26 19h	Lu 26 20h	Ma 27 6h	Ma 27 7h	Ma 27 8h	Ma 27 9h	Ma 27 10h	Ma 27 11h	Ma 27 12h	Ma 27 13h	Ma 27 14h	Ma 27 15h	Ma 27 16h	Ma 27 17h	Ma 27 18h	Ma 27 19h	Ma 27 20h	Me 28 6h	Me 28 7h	Me 28 8h	Me 28 9h	Me 28 10h	Me 28 11h	Me 28 12h	Me 28 13h	Me 28 14h	Me 28 15h	Me 28 16h	Me 28 17h	Me 28 18h	Me 28 19h	Me 28 20h
Dir. vent
V. moy. (mph)	4	4	7	7	8	9	6	8	11	10	10	12	12	12	13	5	3	3	3	4	4	6	7	9	10	10	10	10	9	7	3	3	3	4	5	6	7	7	8	9	9	9	7	5	3	1	0	1	3	3	3	3	5	7	9	8	6	6	3	2	5	5	6	6	7	6	7	6	6	7	6	6	7	6	4	5	5	6	6	7	7	7	7	7	7	7	7	7	5	5	3	3	4	5	5	6	7	7	8	8	9	9	8	6	5	3	2	2	3	5	6	7	7	8	8	8	8	7	5	3	0	0	1	2	3	4	4	6	7	7	7	7	6	4	2	1	0	1	2	2	2	3	4	6	7	8	8	6	4	2	2	2	3	3	4	4	3	4	5	6	7	6	5	3	3	3	3	3	3	4	5	5	6	7	7	7	6	5	4	3	4	4	4	4	4	3	2	0	3	5	7	7	6	4	4	3	2	1	0	1	2	2	2	3	5	6	7	6	5	4	3	2	1	0	0	1	2	4	6	6	6	6	6	6	5	2	2	3	4	5	6	7	9	10	12	14	15	11	7	3
V. max. (mph)	12	11	11	13	12	13	8	11	16	15	15	18	19	20	22	8	4	8	9	8	8	8	10	13	15	15	15	15	15	14	4	6	6	6	7	9	9	9	10	11	12	12	13	14	10	5	7	6	5	4	5	5	6	6	6	6	5	5	6	5	8	11	11	10	10	11	13	14	16	18	19	21	24	22	20	18	18	18	17	17	16	15	14	14	14	15	15	15	14	13	11	11	10	11	11	12	13	13	13	14	15	16	14	12	10	6	6	6	6	6	7	7	8	8	9	9	9	9	8	7	5	6	6	7	7	7	7	8	8	8	8	7	7	7	6	4	4	4	4	4	4	6	7	8	8	6	5	5	4	4	4	5	5	4	4	4	5	6	7	7	6	5	4	4	4	3	3	3	4	5	6	6	6	6	6	7	7	6	4	3	1	1	2	6	10	14	14	14	13	15	16	16	12	7	3	2	2	2	5	8	11	11	11	10	10	10	9	7	5	4	2	3	4	6	8	9	9	8	8	7	6	5	6	7	8	2	2	2	4	5	6	7	8	8	9	10	10	10	8	7
Temp. (°C)	0	0	0	1	2	4	4	5	6	7	7	6	6	5	4	0	1	2	4	5	7	8	9	9	10	10	9	8	7	6	-1	0	3	7	9	11	12	13	13	14	14	13	11	10	7	0	2	5	7	10	12	14	14	15	15	14	14	12	11	8	3	3	4	4	4	3	4	3	3	4	3	2	3	1	0	0	0	0	0	0	1	2	3	4	5	6	7	5	3	2	-2	0	2	4	6	9	10	11	12	12	12	12	10	8	6	2	4	6	8	11	12	14	15	16	16	16	16	14	11	9	3	6	8	11	13	16	17	18	18	18	18	17	16	13	11	6	9	12	14	16	18	20	21	21	21	21	20	18	16	13	7	10	12	15	17	19	20	22	23	23	22	21	19	17	14	9	12	14	17	19	21	22	24	24	25	25	24	23	20	18	13	15	17	20	23	26	28	29	30	30	29	27	25	22	20	15	17	20	22	25	27	28	29	29	29	29	28	25	22	19	14	17	19	22	25	27	27	28	27	28	28	27	23	18	14	10	12	15	17	19	21	22	22	22	22	21	20	18	16	15
Précip. (mm)																																																													0.1	0.3	0.2	0.2	0.4	0.8	0.8	0.7	0.6	0.5	0.5	0.5	0.1	0.1	0.1
Nébul. tot. (%)	7	100	100	70	37	69	97	82	100	64	100	100	100	100	100	3	38	26	28	15	19	13	9	4	4	3	2	1	2	5	100	100	100	62	100	94	99	61	100	92	100	90	100	100	100	12	17	100	36	80	21	89	18	5	11	100	100	100	100	100	100	100	72	89	100	100	100	100	100	97	100	100	86	100	8	100	100	100	97	95	92	95	97	100	74	48	22	20	17	15	8	9	11	10	10	9	25	40	56	55	55	54	36	18					1	1	2	2	3	3	4	5	6	5	3	2	4	5	7	5	4	2	1	1					1	1	2	3	3	4	11	18	25	39	53	67	51	34	18	12	6											2	4	6	8	11	13	42	65	89	93	96	100	100	100	100	100	100	100	80	61	41	93	86	79	76	74	71	67	64	60	64	69	73	80	86	93	68	54	41	27	14											12	7	2	21	41	60	73	87	100	80	60	40	60	80	100				1	3	4	3	1		1	2	3	23	44	64
Nébul. haute (%)											28	31	100	100	100	1	38	26	28	15	5	5							2	5	100	100	100	52	100	93	99	55	100	90	100	72	100	100	100	5	10	100	30	76	5	86	10	5	10	100	100	100	100	100																												3	6	9	2	3	5	5	5	5	22	39	56	55	53	52	35	17					1	1	2	2	3	3	4	4	5	4	3	2	4	5	7	5	4	2	1	1					1	1	2	2	3	3	10	17	24	37	51	64	49	33	18	12	6											2	3	5	6	7	8	39	62	85	90	95	100	100	100	100	100	100	100	80	61	41	93	85	78	75	73	70	66	63	59	63	66	70	77	85	92	66	51	37	25	12											11	7	2	21	39	58	72	86	100	80	60	40	60	80	100				1	2	3	2	1		1	1	2	13	24	35
Nébul. moy. (%)			5	13	4	2	6	71	100	64	100	100	26	12	21	3	2	18	14	14	19	13	9	4	4	3	2	1							5		10	10	5	5	63	67	100	100	100					5	5						5	100	100	100	5	5	5	5	100	100	100	5	100	57	5	5	63																											1	2	3	2	1																																																																																						1	1	2	1	1		10	7	5	3	2																																			1	1	2	22	43	63
Nébul. basse (%)	7	100	100	70	37	69	97	82	42	1	2	5	1	6				2	2																									5	5	5	5	5	5	5	5	5	5							5	100	100	69	86	100	100	100	100	100	97	100	100	55	100	5	100	100	100	97	95	92	95	97	100	74	47	21	16	10	5	5	5	5	4	3	2	1	1
CAPE	10	20	10	10	50	50	70	70	130	80	40	50	20	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	40	70	30	30	90	140	170	200	130	80	70	50	30	40	20	10	10	10	10	10	10	10	10	10	10	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	20	40	50	50	30	20	0	0	0	0	0	0	0	10	10	10	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	60	140	180	10	20	30	40	60	80	100	130	170	240	330	350	260	120	10
Plafond (m)	1.9k	1.9k	1.9k	2.0k	2.1k	2.3k	2.3k	2.5k	2.4k	2.7k	2.8k	2.6k	2.6k	2.5k	2.3k	2.0k	2.0k	2.1k	2.4k	2.7k	2.9k	3.1k	3.1k	3.1k	3.1k	3.0k	3.0k	2.8k	2.8k	2.7k	1.9k	2.1k	2.6k	3.2k	3.7k	4.1k	4.2k	4.3k	4.1k	4.0k	4.0k	3.8k	3.5k	3.1k	2.7k	1.9k	2.1k	2.3k	2.6k	2.9k	3.2k	3.4k	3.5k	3.7k	3.7k	3.7k	3.7k	3.3k	2.8k	2.5k	1.8k	1.8k	2.0k	2.1k	2.0k	1.9k	2.0k	1.9k	1.9k	2.1k	2.0k	1.9k	2.1k	1.9k	1.9k	1.8k	1.8k	1.9k	1.9k	2.0k	2.1k	2.2k	2.4k	2.5k	2.7k	2.9k	2.9k	2.7k	2.4k	2.2k	1.9k	2.1k	2.4k	2.7k	3.1k	3.5k	3.6k	3.6k	3.7k	3.7k	3.7k	3.6k	3.2k	2.8k	2.6k	2.0k	2.2k	2.4k	2.7k	3.1k	3.5k	3.7k	3.9k	4.0k	4.1k	4.1k	3.9k	3.5k	3.1k	2.8k	2.4k	2.7k	3.0k	3.4k	3.8k	4.1k	4.2k	4.1k	4.1k	4.1k	4.1k	3.9k	3.5k	3.1k	2.8k	2.4k	2.7k	3.0k	3.3k	3.6k	3.9k	4.2k	4.3k	4.5k	4.7k	4.7k	4.5k	4.0k	3.4k	3.1k	2.5k	2.7k	2.9k	3.2k	3.5k	3.8k	4.0k	4.2k	4.3k	4.5k	4.5k	4.4k	3.9k	3.5k	3.1k	2.6k	2.8k	3.1k	3.3k	3.6k	3.8k	4.0k	4.1k	4.2k	4.3k	4.4k	4.3k	3.8k	3.4k	3.1k	3.0k	3.2k	3.4k	3.7k	4.1k	4.5k	4.9k	5.1k	5.3k	5.6k	5.7k	5.5k	4.9k	4.3k	3.9k	3.9k	4.0k	4.1k	4.4k	4.9k	5.4k	5.7k	5.8k	5.8k	6.0k	6.1k	5.8k	4.9k	4.2k	3.7k	2.7k	3.0k	3.4k	3.8k	4.5k	5.1k	5.5k	5.5k	5.5k	5.8k	6.1k	5.4k	3.9k	2.8k	2.2k	2.0k	2.2k	2.5k	2.8k	3.1k	3.4k	3.7k	3.8k	3.8k	3.7k	3.5k	3.3k	3.1k	3.0k	2.8k

Herd Peak is an inland desert site located in the Shasta Valley, USA. Known for its excellent summer glass-off conditions and XC potential, this site has a long history of free flight. Both the launch and primary landing zone (LZ) are on private land, and permission is granted for USHPA member pilots. Flight Types: Thermal, XC, Glass-off Season: Spring, Summer, Fall Pilot Proficiency: USHPA P3/H3; P2/H2 with instructor or mentor sign-off. A site introduction is required for all pilots. Glider Restrictions: Speed or mini wings are not permitted. Membership Requirements: USHPA membership is required; RVHPA membership is recommended but not mandatory. Site Waiver: Required and usually available on launch. It is recommended to download and print the waiver and deposit the signed waiver in the box on launch. Launch Coordinates: 41.6166, –122.229 (41°36’59” N, 122°13’44” W) Elevation: 5680 ft. (1732 m.) Launch Type: Dirt slope Wind Directions and Speed: 220 to 270 degrees; 2-14 mph for paragliders, 10-20 mph for hang gliders. Primary LZ (Sheep Rock Ranch) Coordinates: 41.5825, -122.2559 (41°34’57.02″ N, 122°15’21.10″ W) Elevation: 3495 ft. (1066 m.) Glide Ratio: 6.5 Radios & Communication: Local frequency is 151.505 MHz; cell service is good on launch and in the primary LZ with most carriers. Emergencies: Dial 911 Access: 2WD accessible via US highway and dirt US Forest Service roads. Airspace & Air Traffic: No airspace restrictions in the immediate vicinity. Sailplane traffic is common. Klamath Falls airport and military operation areas along XC routes have airspace restrictions and possible military air activity, including fighter jets. Landing Restrictions: Landing in the Lava Beds National Monument is prohibited without prior notification and permission from the National Park Service. Weather Hazards: Overdevelopment, cloud suck, strong desert conditions, dust devils, thermic LZ, high winds, density altitude. Weather Info: [NWS Forecast for LZ](https://forecast.weather.gov/MapClick.php?lat=41.613726&lon=-122.228232&site=rev&unit=0&lg=en&FcstType=text), SoarCast, Grass Lake webcam RVHPA Site Contact: herdpeak@gmail.com; you may also post inquiries to the RVHPA Yahoo! Group. For more information, visit [RVHPA Herd Peak Site Guide](https://rvhpa.org/site-guide/herdpeak/). Welcome to the Herd Peak flying site. This guide is intended to help pilots make the most of their time at Herd Peak while promoting safe flying practices. It is not a substitute for a thorough site introduction from a knowledgeable pilot. Always use your own judgment to determine if it is safe or appropriate to fly under current conditions. If unsure, do not fly. For additional information, visit [AirXpansion](https://airxpansion.com/pages/visit-mount-shasta) and [BHGC Herd Peak Site](http://www.bhgc.org/sites/#site_herd-pe).

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Optimal Wind Direction

Optimal Speed (mph)

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