Frost Monitoring

Legend:
wind below 7 km/h
wind between 7 km/h and 13 km/h
wind greater than 13 km/h
Station Timestamp Temperature (2') (˚C) Temperature (8') (˚C) Leaf Sensor Temps (˚C) Wind Speed (km/h)
Haskett Wed, Apr 8, 2026 2:39 PM 7.49 13.42 0
North Wed, Apr 8, 2026 4:27 PM 12.64 12.64 10.1, 10.7, 10.8 5.78
Paczy Wed, Apr 8, 2026 4:24 PM 11.59 11.59 10.4, 10.8, 11.1 4.29
Schooley Wed, Apr 8, 2026 4:30 PM 13.7 13.53 11 5.48
SFL Culown Wed, Apr 8, 2026 4:27 PM 14.04 12.91 10.4, 11, N/A 3.26
SFL Home Wed, Apr 8, 2026 4:27 PM 12.95 13.16 9.8 0
SFL Lorimer Wed, Apr 8, 2026 4:27 PM 17.2 12.03 11.2, 15 5.83
SFL Rajtrowski Wed, Apr 8, 2026 4:24 PM 12.18 13.55 10.1 3.59
SFL Zavitz Wed, Apr 8, 2026 4:27 PM 14.12 12.49 11.6, 11.1 3.8
Shaw Wed, Apr 8, 2026 4:24 PM 11.47 12.06 0.11
Suncrest Wed, Apr 8, 2026 4:27 PM 12.91 12.47 9.5, 9.5 6.2
Waterford Wed, Apr 8, 2026 4:24 PM 13.76 13.76 10.3, 9.5 5.12
Weslan Wed, Apr 8, 2026 4:27 PM 10.45 10.45 9.8, 9.1 3.33

Weather Forecast

Fetching weather…

Apple Minimum Temperatures

Silver tip Green tip ½ inch Green Tight Cluster First Pink Full Pink First Bloom Full Bloom Petal Fall
10% kill -9.4 -7.8 -5.0 -2.8 -2.2 -2.2 -2.2 -2.2 -2.2
90% kill -16.7 -12.2 -9.4 -6.1 -4.4 -3.9 -3.9 -3.9 -3.9

Critical Spring Temperatures in °C for Apples

Tart Cherry Minimum Temperatures

Swollen Bud Side Green Green Tip Tight Cluster Open Cluster First White First Bloom Full Bloom Petal Fall
10% kill -9.4 -4.4 -3.3 -3.3 -2.2 -2.2 -2.2 -2.2 -2.2
90% kill -17.7 -12.2 -5.5 -4.4 -4.4 -4.4 -4.4 -4.4 -4.4

Critical Spring Temperatures in °C for Tart Cherries

Wind Machines

  • Do not operate wind machines if wind speeds are much higher than 7 km/h as there is unlikely to be a strong temperature inversion or warmer air above the field anyway.
  • Do not operate wind machines if wind speeds are 13 km/h or higher, as this can damage their long, thin blades.
  • Never operate wind machines if wind speeds are 21 km/h or higher, as this can seriously damage them.

Overhead Irrigation

  • Must be started before the temperature reaches freezing, if running, start above 1 degree C.
  • Must stay on until temperatures return to above freezing
  • Wind can result in worse frost damage than if we had done nothing, if winds are likely to get above 20 km/hour through the freezing event we probably should not turn on the irrigation system.
  • If freezing event is past 12 hours we probably should not irrigate as the ponds may run out of water and ice buildup could cause extensive damage