Overview Realtime Historical Map View
Flash Flood Watch
2026-07-22T21:00:00-06:00

* WHAT...Flash flooding and debris flows caused by excessive rainfall are possible over the Wapiti Burn Area. * WHERE...In and around the Wapiti Burn Scar in the Boise Mountains, including Highway 21 between Grandjean and Banner Summit, and Grandjean Road. * WHEN...From Wednesday afternoon through Wednesday evening. * IMPACTS...Heavy rainfall over the Wapiti Burn Area is expected during the period of the watch. Those near the Wapiti Burn Area should be prepared for potential flooding impacts. * ADDITIONAL DETAILS... - Heavy rainfall is expected over the Wapiti Burn Area, which may lead to flash flooding and debris flows. - https://www.weather.gov/safety/flood

Banner Summit Historical Data

Historical Data


Date Snowpack SWE Snowfall Air Temperature
2025-11-27 8.73"
2025-11-28 9.15"
2025-11-29 8.84"
2025-11-30 8.8"
2025-12-01 8.69"
2025-12-02 9.29"
2025-12-03 9.69"
2025-12-04 9.18"
2025-12-05 13.05"
2025-12-06 13.97"
2026-05-09 16.17"
2026-05-10 12.43"
2026-05-11 8.12"
2026-05-12 3.58"
2026-05-13 3.74"
2026-05-14 3.82"
2026-05-15 3.7"
2026-05-16 3.74"
2026-05-17 3.67"
2026-05-18 4.07"
2026-05-19 3.8"
2026-05-20 4.07"
2026-05-21 3.59"
2026-05-22 3.73"
2026-05-23 3.71"
2026-05-24 3.78"
2026-05-25 3.69"
2026-05-26 3.87"
2026-05-27 3.99"
2026-05-28 3.72"
2026-05-29 3.83"
2026-05-30 3.69"
2026-05-31 3.68"
2026-06-01 3.86"
2026-06-02 3.94"
2026-06-03 3.79"
2026-06-04 4.1"
2026-06-05 4.0"
2026-06-06 4.31"
2026-06-07 4.66"
2026-06-08 5.31"
2026-06-09 4.09"
2026-06-10 5.33"
2026-06-11 5.39"
2026-06-12 5.06"
2026-06-13 4.98"
2026-06-14 4.84"
2026-06-15 4.87"
2026-06-16 4.73"
2026-06-17 7.29"
2026-06-18 5.01"
2026-06-19 5.77"
2026-06-20 6.39"
2026-06-21 5.31"
2026-06-22 6.57"
2026-06-23 5.84"
2026-06-24 4.78"
2026-06-25 6.61"
2026-06-26 5.98"
2026-06-27 7.6"
2026-06-28 6.89"
2026-06-29 7.12"
2026-06-30 6.6"
2026-07-01 4.59"
2026-07-02 7.75"
2026-07-03 7.4"
2026-07-04 7.16"
2026-07-05 5.89"
2026-07-06 6.54"
2026-07-07 4.46"
2026-07-08 4.72"
2026-07-09 4.92"
2026-07-10 4.57"
2026-07-11 4.96"
2026-07-12 5.46"
2026-07-13 4.69"
2026-07-14 5.28"
2026-07-15 6.01"
2026-07-16 4.89"
2026-07-17 4.59"
2026-07-18 4.11"
2026-07-19 6.01"
2026-07-20 4.03"
2026-07-21 5.11"

Snowfall Calendar


Date Average 2026 2025
11-27 0
11-28 0.02
11-29 0.14
11-30 0
12-01 0
12-02 0
12-03 0
12-04 0
12-05 0
12-06 2.16

Annual Peak Snowpack


Seasonal Comparison


Oceanic Nino Index