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NYSPHSAA Heat Index Procedures (Heat Index + WBGT), updated May 3, 2023 — Heat Stress Alert Levels

NYSPHSAA procedure for New York high-school athletic practices and contests: a WeatherBug Feels Like (heat index) ladder and a NATA/KSI regional (Category 1-3) WBGT chart set water and rest breaks, practice caps, football equipment limits and, at heat index 96 °F or WBGT black, no outdoor activity and suspended contests. An athletics overlay, not an occupational work/rest rule.

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Governing metric
Heat index (Feels Like) in Fahrenheit and/or WBGT in Fahrenheit by heat-safety-region category
Authority
New York State Public High School Athletic Association (NYSPHSAA)
Jurisdiction
New York Us High School Athletics
Legal status
Industry Guidance
Published
2010-05-01
Rule type
Alert Overlay
Standard ID
HGC-174

Check a reading against this rule

This rule has no numeric trigger the calculator evaluates — it states duties and control measures rather than a threshold a reading can be checked against. Its measures are listed below.

Governing formula

No standalone formula is published for this standard; see programmable logic and parameters below.

Alert levels

ParameterValue
defaultCategory1
heatIndexEdgesF
  • cautionFrom 79
  • watchAbove 85
  • warningAbove 90
  • alertAbove 95
wbgtEdgesFByCategory
  • 1 yellowFrom 76.1, orangeAbove 81, redAbove 84, blackAbove 86
  • 2 yellowFrom 79.7, orangeAbove 84.6, redAbove 87.6, blackAbove 89.6
  • 3 yellowFrom 82, orangeAbove 86.9, redAbove 90, blackAbove 91.9
maxPracticeHoursorange 2 · red 1
breaksPerHour
  • green 3
  • yellow 3
  • orange 4
minBreakMinutes
  • green 3
  • yellow 4
  • orange 4
restMinutesPerHourRed20
heatIndexWarningWaterBreakEveryMinutes15
recoveryHoursPerPracticeHour1
measureWhenAirTempFAtLeast80

Programmable logic

Heat index: under 79 °F full activity; 79-85 caution (ample water, multiple breaks, monitor, consider reducing practice); above 85-90 watch (adds 1 h recovery per 1 h practice, consider postponing); above 90-95 warning (water breaks every 15 min, light loose clothing, practices football helmets only); above 95 alert, required: no outside activity, practice or contest, inside only if air conditioned.

WBGT (rounded to 0.1 °F) by Category (default 1, most protective): Cat 1 under 76.1 / 76.1-81.0 / 81.1-84.0 / 84.1-86.0 / above 86.0; Cat 2 79.7 / 84.6 / 87.6 / 89.6; Cat 3 82.0 / 86.9 / 90.0 / 91.9.

Green 3 breaks/h of 3 min; yellow discretion, 3 breaks/h of 4 min; orange 2 h cap, 4 breaks/h of 4 min, football helmet/shoulder pads/shorts; red 1 h cap, 20 min rest per hour, football no protective equipment and no conditioning; black no outdoor workouts. Printed gaps go to the higher band; when both readings are given the more severe band governs.

Inputs

Required inputs: none

Optional inputs: wbgtC, heatIndexF, wbgtRegionCategory

Sources

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