Norfolk Fruit Growers
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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 No recent updates N/A N/A N/A
North Sun, May 24, 2026 3:09 PM 19.67 19.67 16.4, 16.5, 16.4 2.66
Paczy Sun, May 24, 2026 2:24 PM 19.34 19.34 16.3, 16.1, 16.3 3.61
Schooley No recent updates N/A N/A 15.9 N/A
SFL Culown Sun, May 24, 2026 3:12 PM 21.66 21.06 16.6, 16.9, 16.8 2.63
SFL Home Sun, May 24, 2026 3:12 PM 21.28 21.01 16.7 4.82
SFL Lorimer Sun, May 24, 2026 3:12 PM 22.23 20.45 17, 18.6 0
SFL Rajtrowski Sun, May 24, 2026 3:12 PM 21.48 22.21 17 6.35
SFL Zavitz Sun, May 24, 2026 3:12 PM 21.41 20.61 16.8, 16.5 2.24
Shaw Sun, May 24, 2026 3:09 PM 19.65 20.11 2.65
Suncrest Sun, May 24, 2026 3:15 PM 20.85 20.82 N/A, 17.1 3.68
Waterford Sun, May 24, 2026 3:09 PM 20.25 20.25 16.7, 16.6 2.96
Weslan Sun, May 24, 2026 3:09 PM 18.74 18.74 16.5, 16.3 4.23

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