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Snow Course Measurements for February 2010
February measurements received as of Tuesday, February 9, 12:01 PM
Num Name Elev. Date Depth Water Density April 1 Average
Content
Shasta River Basin
1 Parks Creek 6,700 01-FEB 84.1 25.3 30% 37.4 68%
3 Sweetwater 5,850 01-FEB 47.4 12.6 27% 13.7 92%
Basin Average Pct. of April 1: 80%
February 1: 129%
Scott River Basin
5 Middle Boulder 1 6,600 Scheduled for measurement by Scott River Ranger District
311 Middle Boulder 3 6,200 Scheduled for measurement by Scott River Ranger District
298 Dynamite Meadow 5,700 Scheduled for measurement by Scott River Ranger District
285 Swampy John 5,500 27-JAN 50.6 12.4 25% 34.0 36%
Basin Average Pct. of April 1: 36%
February 1: 59%
Trinity River Basin
9 Deadfall Lakes 7,200 Scheduled for measurement by Mount Shasta Ranger District
10 Red Rock Mountain 6,700 Scheduled for measurement by Weaverville Ranger District
11 Bear Basin 6,500 Scheduled for measurement by Weaverville Ranger District
12 Shimmy Lake 6,400 Scheduled for measurement by Weaverville Ranger District
16 Highland Lakes 6,030 Scheduled for measurement by Weaverville Ranger District
437 Paradise Peak 5,800 Scheduled for measurement by Hayfork Ranger District
17 Big Flat (Course) 5,100 Scheduled for measurement by Weaverville Ranger District
Sacramento River Basin
18 Mount Shasta 7,900 Scheduled for measurement by Mount Shasta Ranger District
19 Sand Flat (Course) 6,800 28-JAN 109.2 34.7 32% 43.6 80%
21 Gray Rock Lakes 6,200 02-FEB 134.2 45.2 34% 48.4 93%
22 Slate Creek 5,700 Scheduled for measurement by Weaverville Ranger District
Basin Average Pct. of April 1: 86%
February 1: 135%
Mc Cloud River Basin
23 Brewer Creek 6,250 02-FEB 91.4 29.8 33% 36.2 82%
25 Stouts Meadow 5,400 Scheduled for measurement by McCloud Ranger District
Basin Average Pct. of April 1: 82%
February 1: 129%
Pit River Basin
30 Cedar Pass 7,100 02-FEB 36.6 9.2 25% 16.7 55%
28 Blue Lake Ranch 6,800 01-FEB 24.4 6.2 25% 10.4 60%
33 Thousand Lakes 6,500 03-FEB 71.0 21.0 30% 34.6 61%
35 Adin Mountain 6,200 28-JAN 34.4 8.2 24% 12.5 66%
343 New Manzanita Lake 5,900 31-JAN 31.8 7.8 25% 8.0 98%
Basin Average Pct. of April 1: 68%
February 1: 106%
Cottonwood Cr Basin
436 Bully Choop 6,100 Scheduled for measurement by Hayfork Ranger District
Stony Cr Basin
62 Anthony Peak 6,200 28-JAN 68.0 21.0 31% 30.1 70%
Basin Average Pct. of April 1: 70%
February 1: 109%
Feather River Basin
47 Lower Lassen Peak 8,250 28-JAN 150.1 49.6 33% 80.2 62%
361 Kettle Rock 7,300 28-JAN 49.6 13.3 27% 23.4 57%
48 Mount Dyer 1 7,100 28-JAN 71.9 19.4 27% 25.9 75%
359 Grizzly Ridge 6,900 25-JAN 67.7 17.8 26% 30.4 59%
279 Eureka Bowl 6,800 03-FEB 83.6 24.6 29% 42.7 58%
388 Pilot Peak (DWR) 6,800 28-JAN 87.8 29.3 33% 45.5 64%
280 Rowland Creek 6,700 27-JAN 41.3 10.0 24% 17.4 57%
75 Church Meadows 6,700 26-JAN 75.5 20.6 27% 30.7 67%
360 Mount Hough 6,700 26-JAN 73.7 17.3 23% 30.7 56%
53 Three Lakes 6,250 27-JAN 88.9 25.3 28% 40.8 62%
52 Eureka Lake 6,200 03-FEB 70.9 18.8 27% 31.7 59%
51 Harkness Flat 6,200 25-JAN 91.8 23.1 25% 28.5 81%
290 Mount Dyer 2 6,050 28-JAN 59.5 14.8 25% 16.6 89%
54 Mill Creek Flat 5,900 27-JAN 98.3 28.3 29% 39.0 73%
353 Frenchman Cove 5,800 03-FEB 19.8 4.8 24% 2.1 229% *
354 Antelope Ridge 5,650 28-JAN 21.1 5.2 25% 3.0 173% *
355 Abbey 5,650 25-JAN 47.1 10.3 22% 9.0 114%
49 Letterbox 5,600 27-JAN 107.9 35.8 33% 49.0 73%
55 Mount Stover 5,600 28-JAN 63.1 15.9 25% 14.7 108%
58 Feather River Meadow 5,400 28-JAN 79.1 21.1 27% 23.1 91%
56 Browns Camp 5,400 28-JAN 57.1 16.9 30% 23.3 73%
59 Warner Creek 5,100 28-JAN 69.5 19.2 28% 14.7 131%
434 Humbug Summit 2 4,850 25-JAN 68.9 15.2 22% 14.3 106%
61 Chester Flat 4,600 29-JAN 38.8 11.3 29% 6.1 185%
Basin Average Pct. of April 1: 82%
February 1: 128%
Yuba River Basin
64 Webber Peak 7,800 28-JAN 74.1 23.2 31% 41.9 55%
65 Castle Creek 5 7,400 29-JAN 92.3 27.9 30% 52.1 54%
66 Meadow Lake 7,200 28-JAN 98.9 30.3 31% 55.8 54%
67 Red Mountain 7,200 01-FEB 94.2 31.1 33% 51.9 60%
68 English Mountain 7,100 28-JAN 89.4 28.9 32% 45.4 64%
69 Donner Summit 6,900 01-FEB 76.0 24.0 32% 38.6 62%
76 Furnace Flat 6,700 01-FEB 93.3 29.7 32% 48.4 61%
74 Yuba Pass 6,700 29-JAN 71.3 21.6 30% 29.6 73%
78 Findley Peak 6,500 28-JAN 77.9 23.1 30% 29.8 78%
77 Lake Fordyce 6,500 01-FEB 83.3 27.2 33% 40.9 67%
389 Robinson Cow Camp Snow 6,480 28-JAN 89.2 28.2 32% 42.5 66%
390 Sunnyside Meadow 6,300 28-JAN 109.6 35.0 32% 55.4 63%
80 Cisco 5,900 01-FEB 67.7 23.0 34% 27.6 83%
372 Chapman Creek 5,850 29-JAN 63.3 19.0 30% 23.7 80%
83 Bowman Lake 5,650 29-JAN 60.9 18.8 31% 22.3 84%
391 Lexington 5,600 29-JAN 86.0 26.0 30% 30.7 85%
277 Gibsonville 5,400 29-JAN 82.9 24.5 30% 28.7 85%
85 Lake Spaulding 5,200 01-FEB 57.0 19.5 34% 21.3 92%
429 Chalk Bluff 4,850 28-JAN 36.1 10.6 29%
Basin Average Pct. of April 1: 70%
February 1: 110%
American River Basin
106 Upper Carson Pass 8,500 28-JAN 76.8 21.8 28% 36.2 60%
331 Lower Carson Pass 8,400 28-JAN 81.8 23.9 29% 39.2 61%
107 Caples Lake (DWR) 8,000 28-JAN 73.0 20.6 28% 30.8 67%
365 Alpha 7,600 28-JAN 69.3 20.3 29% 33.8 60%
338 Lost Corner Mountain 7,500 27-JAN 83.7 24.1 29% 36.2 67%
108 Echo Summit 7,450 27-JAN 66.0 16.9 26% 33.8 50%
110 Lake Audrain 7,300 27-JAN 73.5 20.2 27% 35.3 57%
109 Silver Lake 7,100 28-JAN 57.1 17.7 31% 21.0 84%
316 Wrights Lake 6,900 27-JAN 75.3 21.7 29% 32.8 66%
113 PHillips 6,800 29-JAN 62.6 20.3 32% 27.6 74%
320 Lyons Creek 6,700 27-JAN 78.2 22.9 29% 31.8 72%
115 Huysink 6,600 28-JAN 87.3 27.5 32% 45.0 61%
289 Tamarack Flat 6,550 29-JAN 67.8 20.2 30% 28.4 71%
114 Wabena Meadows 6,300 27-JAN 90.9 27.2 30% 42.8 64%
369 Miranda Cabin 6,200 27-JAN 91.0 28.0 31% 40.0 70%
120 Onion Creek 6,100 27-JAN 64.4 19.1 30% 19.6 97%
371 Diamond Crossing 6,050 27-JAN 65.7 19.7 30% 22.0 90%
122 Talbot Camp 5,750 27-JAN 69.3 20.7 30% 20.9 99%
322 Robbs Valley 5,600 29-JAN 58.5 17.0 29% 15.6 109%
127 Ice House 5,300 29-JAN 39.6 11.0 28% 5.8 190%
Basin Average Pct. of April 1: 78%
February 1: 123%
Mokelumne River Basin
323 Highland Meadow 8,700 28-JAN 98.6 30.7 31% 48.7 63%
364 Tragedy Creek 8,150 28-JAN 82.9 27.2 33% 45.0 60%
129 Blue Lakes 8,000 28-JAN 75.7 20.8 27% 36.2 57%
131 Wheeler Lake 7,800 28-JAN 105.3 32.7 31% 53.3 61%
132 Pacific Valley 7,500 28-JAN 80.0 23.9 30% 38.9 61%
363 Podesta 7,200 29-JAN 88.8 28.1 32% 44.8 63%
133 Corral Flat 7,200 28-JAN 89.7 30.6 34% 40.5 76%
134 Bear Valley Ridge 1 6,700 28-JAN 52.9 16.4 31% 24.6 67%
435 Lumberyard 2 6,500 27-JAN 58.7 21.0 36% 13.8 152%
136 Hams Station 5,500 27-JAN 31.0 11.3 36% 5.3 213% *
137 Antelope Springs 4,350 29-JAN 16.7 5.2 31% 2.9 179% *
Basin Average Pct. of April 1: 73%
February 1: 117%
Stanislaus River Basin
345 Deadman Creek 9,250 29-JAN 70.9 21.2 30% 35.1 60%
344 Clark Fork Meadow 8,900 29-JAN 78.4 21.6 28% 39.8 54%
427 Gianelli Meadow 8,400 26-JAN 105.9 30.5 29% 52.9 58%
138 Lower Relief Valley 8,100 29-JAN 86.9 26.3 30% 39.6 66%
139 Soda Creek Flat 7,800 29-JAN 55.9 16.0 29% 22.0 73%
384 Stanislaus Meadow 7,750 28-JAN 93.3 28.7 31% 51.0 56%
140 Eagle Meadow 7,500 28-JAN 65.5 17.3 26% 24.2 71%
142 Herring Creek 7,300 28-JAN 69.3 20.3 29% 28.0 72%
143 Relief Dam 7,250 29-JAN 56.3 15.5 28% 19.9 78%
416 Bloods Creek 7,200 29-JAN 77.6 23.0 30% 34.6 66%
432 Sapps Hollow 6,950 30-JAN 79.1 22.9 29% 33.0 69%
430 Corral Meadow 6,650 30-JAN 71.2 19.8 28% 19.7 101%
373 Hells Kitchen 6,550 29-JAN 63.1 15.1 24% 21.8 69%
145 Niagara Flat 6,500 28-JAN 64.9 17.4 27% 19.6 89%
386 Black Springs 6,500 29-JAN 70.9 20.0 28% 22.0 91%
Basin Average Pct. of April 1: 72%
February 1: 114%
Tuolumne River Basin
157 Dana Meadows 9,800 29-JAN 64.0 18.0 28% 31.1 58%
158 Rafferty Meadows 9,400 28-JAN 71.0 20.0 28% 32.8 61%
159 Bond Pass 9,300 31-JAN 83.9 26.0 31% 44.9 58%
368 New Grace Meadow 8,900 28-JAN 101.0 30.8 30% 48.0 64%
161 Tuolumne Meadows 8,600 27-JAN 60.0 15.0 25% 22.7 66%
162 Horse Meadow 8,400 28-JAN 91.9 28.2 31% 46.7 60%
163 Wilma Lake 8,000 28-JAN 94.1 26.7 28% 43.2 62%
165 Sachse Springs 7,900 30-JAN 86.9 28.5 33% 38.1 75%
166 Huckleberry Lake 7,800 29-JAN 83.7 25.6 31% 41.9 61%
164 Spotted Fawn 7,800 30-JAN 97.8 31.6 32% 45.6 69%
167 Paradise Meadow 7,650 28-JAN 84.7 25.3 30% 39.9 63%
348 Kerrick Corral 7,000 25-JAN 77.7 20.9 27% 23.5 89%
173 Lower Kibbie 6,700 31-JAN 71.7 23.2 32% 26.0 89%
168 Upper Kibbie Ridge 6,700 31-JAN 61.9 19.7 32% 18.6 106%
169 Vernon Lake 6,700 28-JAN 62.5 18.6 30% 22.4 83%
171 Beehive Meadow 6,500 31-JAN 62.5 19.6 31% 23.5 83%
172 Bell Meadow 6,500 25-JAN 66.0 16.3 25% 15.5 105%
Basin Average Pct. of April 1: 74%
February 1: 117%
Merced River Basin
176 Snow Flat 8,700 28-JAN 85.4 23.1 27% 44.5 52%
177 Ostrander Lake 8,200 28-JAN 81.7 22.7 28% 32.6 70%
178 Tenaya Lake 8,150 28-JAN 73.5 15.8 21% 33.6 47%
179 Gin Flat (Course) 7,000 30-JAN 82.0 32.0 39% 32.0 100%
180 Peregoy Meadows 7,000 30-JAN 67.8 19.8 29% 29.3 68%
Basin Average Pct. of April 1: 67%
February 1: 107%
San Joaquin River Basin
182 Mono Pass 11,450 Scheduled for measurement by Southern California Edison Company, Big Creek
183 Piute Pass 11,300 25-JAN 83.0 24.2 29% 37.9 64%
276 Pioneer Basin 10,400 27-JAN 73.5 19.3 26% 34.0 57%
186 Volcanic Knob 10,050 27-JAN 73.2 19.3 26% 30.7 63%
187 Rose Marie 10,000 27-JAN 74.4 18.9 25% 29.7 64%
189 Agnew Pass 9,450 01-FEB 81.4 23.8 29% 31.8 75%
190 Kaiser Pass 9,100 27-JAN 90.1 20.3 23% 39.0 52%
191 Dutch Lake 9,100 27-JAN 76.7 19.2 25% 28.1 68%
346 Badger Flat 8,300 28-JAN 81.6 20.4 25% 30.8 66%
194 Nellie Lake 8,000 28-JAN 96.3 27.7 29% 35.8 77%
324 Lake Thomas A Edison 7,800 27-JAN 59.8 11.9 20% 14.7 81%
196 Chilkoot Lake 7,450 02-FEB 90.8 28.0 31% 36.8 76%
347 Tamarack Creek 7,250 28-JAN 81.1 22.8 28% 23.8 96%
198 Florence Lake 7,200 27-JAN 43.2 10.2 24% 7.6 134%
197 Chilkoot Meadow 7,150 27-JAN 101.8 31.6 31% 36.6 86%
199 Huntington Lake 7,000 25-JAN 79.9 18.7 23% 18.6 101%
204 Poison Meadow 6,800 27-JAN 83.0 23.8 29% 24.8 96%
Basin Average Pct. of April 1: 78%
February 1: 125%
Kings River Basin
222 Bishop Pass 11,200 28-JAN 79.7 27.0 34% 35.0 77%
299 Charlotte Ridge 10,700 01-FEB 61.1 17.6 29% 29.9 59%
307 Bullfrog Lake 10,650 01-FEB 55.5 17.8 32% 28.5 62%
398 Bench Lake 10,600 01-FEB 59.2 16.8 28% 27.1 62%
223 Blackcap Basin 10,300 28-JAN 80.6 21.2 26% 34.1 62%
396 Rattlesnake Creek Ba 9,900 01-FEB 75.2 21.3 28% 39.8 54%
225 Beard Meadow 9,800 27-JAN 85.2 21.4 25% 33.3 64%
224 Upper Burnt Corral 9,700 27-JAN 98.6 25.6 26% 37.8 68%
397 Scenic Meadow 9,650 01-FEB 60.3 18.4 31% 24.1 76%
229 Round Corral 9,000 28-JAN 86.0 23.2 27% 35.8 65%
226 Rowell Meadow 8,850 01-FEB 66.0 18.8 28% 26.5 71%
227 Woodchuck Meadow 8,800 28-JAN 83.8 22.4 27% 31.5 71%
232 Long Meadow (Kings R) 8,500 27-JAN 87.6 21.6 25% 29.3 74%
426 Courtright 8,350 01-FEB 73.2 20.6 28% 30.7 67%
233 Statum Meadow 8,300 28-JAN 84.0 25.4 30% 32.3 79%
230 Helms Meadow 8,250 01-FEB 79.2 21.5 27% 26.7 81%
234 Post Corral Meadow 8,200 27-JAN 83.0 19.7 24% 26.3 75%
308 Dodsons Meadow 8,050 27-JAN 86.1 21.1 25% 29.6 71%
237 Horse Corral Meadow 7,600 01-FEB 55.3 13.7 25% 16.3 84%
236 Big Meadows 7,600 02-FEB 60.8 19.5 32% 24.6 79%
438 Ridge Trail 7,500 31-JAN 57.5 21.5 37%
239 Fred Meadow 6,950 01-FEB 74.4 21.8 29% 21.3 102%
Basin Average Pct. of April 1: 72%
February 1: 117%
Kaweah River Basin
292 Farewell Gap 9,500 Scheduled for measurement by Sequoia and Kings Canyon National Parks
243 Panther Meadow 8,600 25-JAN 93.0 25.1 27% 36.7 68%
245 Mineral King 8,000 30-JAN 57.0 17.0 30% 20.6 83%
246 Giant Forest 6,400 30-JAN 56.1 17.7 32% 14.7 120%
Basin Average Pct. of April 1: 90%
February 1: 148%
Tule River Basin
247 Quaking Aspen 7,000 01-FEB 57.5 14.7 25% 12.3 119%
Basin Average Pct. of April 1: 119%
February 1: 195%
Kern River Basin
250 Bighorn Plateau 11,350 31-JAN 56.4 15.1 27% 23.7 64%
251 Cottonwood Pass 11,050 03-FEB 43.7 11.0 25% 14.8 74%
252 Siberian Pass 10,900 29-JAN 61.2 15.2 25% 20.0 76%
253 Crabtree Meadow 10,700 30-JAN 59.4 14.7 25% 19.6 75%
254 Guyot Flat 10,650 30-JAN 61.3 15.3 25% 20.8 74%
275 Sandy Meadows 10,650 31-JAN 57.4 14.1 25% 19.2 73%
255 Tyndall Creek 10,650 31-JAN 56.6 14.4 25% 18.8 77%
257 Big Whitney Meadow 9,750 31-JAN 57.4 14.1 25% 17.2 82%
256 Rock Creek 9,600 30-JAN 58.3 13.4 23% 17.8 75%
258 Round Meadow 9,000 02-FEB 60.2 17.1 28% 24.1 71%
259 Ramshaw Meadows 8,700 27-JAN 48.2 10.6 22% 11.5 92%
260 Little Whitney Meadow 8,500 27-JAN 56.6 12.3 22% 12.9 95%
261 Bonita Meadows 8,300 02-FEB 47.9 12.8 27% 13.6 94%
262 Casa Vieja Meadows 8,300 01-FEB 57.2 13.4 23% 19.8 68%
265 Beach Meadows 7,650 02-FEB 40.6 10.0 25% 8.3 120%
249 Dead Horse Meadow 7,300 Scheduled for measurement by Hot Springs Ranger District
Basin Average Pct. of April 1: 81%
February 1: 132%
Surprise Valley Basin
313 Barber Creek 6,500 Scheduled for measurement by Warner Mountain Ranger District
350 49 Mountain 6,000 Scheduled for measurement by Natural Resources Conservation Service
Truckee River Basin
318 Squaw Valley 2 7,700 31-JAN 82.0 26.6 32% 48.4 55%
89 Webber Lake 7,000 28-JAN 68.9 20.6 30% 31.7 65%
Basin Average Pct. of April 1: 60%
February 1: 95%
Lake Tahoe Basin
99 Rubicon Peak 2 7,500 01-FEB 63.7 20.6 32% 30.8 67%
100 Freel Bench 7,300 01-FEB 34.0 9.6 28% 10.4 92%
101 Ward Creek 2 7,000 01-FEB 70.2 22.1 31% 41.8 53%
333 Glenbrook 2 (Nevada) 6,900 28-JAN 27.0 6.9 26% 11.6 59%
103 Richardsons 2 6,500 27-JAN 38.0 9.8 26% 15.6 63%
104 Upper Truckee 6,400 01-FEB 23.0 5.9 26% 7.4 80%
Basin Average Pct. of April 1: 69%
February 1: 110%
Walker River Basin
421 Leavitt Lake 9,600 31-JAN 90.0 32.6 36% 50.8 64%
377 Virginia Lakes Ridge 9,300 30-JAN 37.7 10.2 27% 19.5 52%
422 Sawmill Ridge 8,750 31-JAN 45.0 13.2 29% 18.8 70%
152 Sonora Pass 8,750 29-JAN 61.7 16.7 27% 24.9 67%
154 Willow Flat 8,250 31-JAN 35.0 9.6 27% 9.9 97%
Basin Average Pct. of April 1: 70%
February 1: 111%
Mono Lake Basin
281 Gem Pass 10,750 02-FEB 75.1 24.1 32% 33.7 72%
181 Tioga Pass 9,800 29-JAN 51.8 16.7 32% 26.8 62%
287 Saddlebag Lake 9,750 29-JAN 64.7 19.8 31% 31.3 63%
286 Ellery Lake 9,600 29-JAN 58.6 17.1 29% 29.0 59%
282 Gem Lake 9,150 02-FEB 68.7 19.9 29% 30.0 66%
Basin Average Pct. of April 1: 64%
February 1: 102%
Owens River Basin
284 Bishop Lake 11,300 27-JAN 54.3 16.3 30% 21.9 74%
220 Cottonwood Lakes 2 11,100 25-JAN 52.1 12.3 24% 14.1 87%
212 East Piute Pass 10,800 25-JAN 53.8 15.0 28% 15.2 99%
213 Sawmill 10,200 27-JAN 51.0 12.2 24% 19.0 64%
221 Cottonwood Lakes 1 10,150 25-JAN 53.4 10.8 20% 12.3 88%
209 Rock Creek 3 10,000 27-JAN 40.6 9.9 24% 14.7 67%
217 Big Pine Creek 1 10,000 26-JAN 53.0 12.9 24% 22.6 57%
218 Big Pine Creek 3 9,800 26-JAN 51.1 12.2 24% 18.3 67%
219 Big Pine Creek 2 9,700 26-JAN 37.6 9.5 25% 14.8 64%
205 Mammoth Pass (Ladwp) 9,300 29-JAN 81.2 25.0 31% 41.9 60%
214 North Lake 9,300 25-JAN 40.6 9.2 23% 10.2 90%
423 Trailhead 9,100 26-JAN 52.2 12.5 24% 13.2 95%
210 Rock Creek 2 9,050 27-JAN 31.8 7.1 22% 11.0 65%
206 Minarets 2 9,000 29-JAN 63.8 17.9 28% 29.1 62%
211 Rock Creek 1 8,700 27-JAN 30.3 7.1 23% 7.5 95%
208 Mammoth 8,300 29-JAN 51.9 14.5 28% 20.2 72%
Basin Average Pct. of April 1: 75%
February 1: 120%
Summary of Snow Surveys
| Region | No. Basins | No. Courses | Avg WC | % Average April 1 | % Average February 1 |
|---|---|---|---|---|---|
| North Coast | 2 | 3 | 16.8" | 65% | 105% |
| Sacramento | 6 | 70 | 21.5" | 75% | 117% |
| San Joaquin Valley | 5 | 62 | 22.5" | 74% | 117% |
| Tulare Lake | 4 | 40 | 17.9" | 78% | 127% |
| North Lahontan | 3 | 13 | 15.7" | 68% | 108% |
| South Lahontan | 2 | 21 | 14.4" | 73% | 115% |
| Statewide Average (weighted) | 74% | 117% | |||
* This course not included in river, basin or Statewide computations.
THIS SUMMARY MAY NOT MATCH THAT PUBLISHED IN BULLETIN 120 DUE TO CHANGES IN AVERAGES AND COURSE SELECTION. USE ONLY FOR COMPARISONS BETWEEN YEARS
Data are preliminary and subject to revision. This document is updated hourly during the data-collection period.