Weather World
Boynton High School Weather Advisories
WEATHER ALERT
Issue Date: 1259 PM CDT Sat Aug 15 2026
This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma.
DAY ONE
This Afternoon and Tonight. DANGEROUS HEAT. RISK
Significant. AREA
Eastern Oklahoma and Western Arkansas. ONSET
Ongoing. DISCUSSION
Dangerous heat conditions continue, with afternoon heat index values from 110 to 115 degrees in much of northeast Oklahoma and the Interstate 40 corridor and 105 to 110 degrees in the remainder of the area. Conditions will begin to slowly improve this evening, though little heat relief is expected overnight with lows only in the upper 70s to lower 80s in most spots. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT
Spotter Activation Not Expected.
DAYS TWO THROUGH SEVEN
Sunday through Friday. SUNDAY AND MONDAY
Thunderstorm and Dangerous Heat Potential. TUESDAY
Dangerous Heat Potential. WEDNESDAY
Thunderstorm and Dangerous Heat Potential. THURSDAY AND FRIDAY
Dangerous Heat Potential. EXTENDED DISCUSSION
Ongoing dangerous heat and heat stress potential persist into Sunday while a weak front sags southward into the region. Moisture pooling along this boundary will help to create heat index values of 105 to 115 degrees again Sunday afternoon. Isolated to scattered showers and thunderstorms are expected to develop with the front late afternoon Sunday and remain possible into Monday afternoon. Localized strong downburst winds will be the main threat with the stronger storms, likely across northeast Oklahoma and into northwest Arkansas. The front will bring a minor cooldown to areas north of Interstate 40 Monday, although heat stress conditions will persist across the southern half of the area. Any break in the heat will be short- lived with very hot conditions returning areawide Tuesday. Low storm chances return during the second half of next week as upper level high pressure retreats westward. Even with the rain chances through the upcoming week, hot and humid conditions remain forecast as well for eastern Oklahoma and northwest Arkansas. weather.gov/tulsa contains additional information.
This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma.
DAY ONE
This Afternoon and Tonight. DANGEROUS HEAT. RISK
Significant. AREA
Eastern Oklahoma and Western Arkansas. ONSET
Ongoing. DISCUSSION
Dangerous heat conditions continue, with afternoon heat index values from 110 to 115 degrees in much of northeast Oklahoma and the Interstate 40 corridor and 105 to 110 degrees in the remainder of the area. Conditions will begin to slowly improve this evening, though little heat relief is expected overnight with lows only in the upper 70s to lower 80s in most spots. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT
Spotter Activation Not Expected.
DAYS TWO THROUGH SEVEN
Sunday through Friday. SUNDAY AND MONDAY
Thunderstorm and Dangerous Heat Potential. TUESDAY
Dangerous Heat Potential. WEDNESDAY
Thunderstorm and Dangerous Heat Potential. THURSDAY AND FRIDAY
Dangerous Heat Potential. EXTENDED DISCUSSION
Ongoing dangerous heat and heat stress potential persist into Sunday while a weak front sags southward into the region. Moisture pooling along this boundary will help to create heat index values of 105 to 115 degrees again Sunday afternoon. Isolated to scattered showers and thunderstorms are expected to develop with the front late afternoon Sunday and remain possible into Monday afternoon. Localized strong downburst winds will be the main threat with the stronger storms, likely across northeast Oklahoma and into northwest Arkansas. The front will bring a minor cooldown to areas north of Interstate 40 Monday, although heat stress conditions will persist across the southern half of the area. Any break in the heat will be short- lived with very hot conditions returning areawide Tuesday. Low storm chances return during the second half of next week as upper level high pressure retreats westward. Even with the rain chances through the upcoming week, hot and humid conditions remain forecast as well for eastern Oklahoma and northwest Arkansas. weather.gov/tulsa contains additional information.
WEATHER ALERT
Issue Date: 1126 AM CDT Sat Aug 15 2026
EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT SUNDAY
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING
HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON CDT SUNDAY
WHAT
Heat index values from 110 to 115 are expected both Saturday afternoon and Sunday afternoon. Overnight lows in the upper 70s to locally, the mid 80s are expected Saturday night. WHERE
Portions of east central and northeast Oklahoma. WHEN
For the first Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to noon CDT Sunday. For the second Extreme Heat Warning, from noon to 8 PM CDT Sunday. IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. ADDITIONAL DETAILS
Effects from this extended heat can accumulate over the days, especially for those with limited access to air conditioning given how warm the nights are staying. It is important to check in on those vulnerable to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT SUNDAY
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING
HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON CDT SUNDAY
WHAT
Heat index values from 110 to 115 are expected both Saturday afternoon and Sunday afternoon. Overnight lows in the upper 70s to locally, the mid 80s are expected Saturday night. WHERE
Portions of east central and northeast Oklahoma. WHEN
For the first Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to noon CDT Sunday. For the second Extreme Heat Warning, from noon to 8 PM CDT Sunday. IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. ADDITIONAL DETAILS
Effects from this extended heat can accumulate over the days, especially for those with limited access to air conditioning given how warm the nights are staying. It is important to check in on those vulnerable to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
WEATHER ALERT
Issue Date: 1126 AM CDT Sat Aug 15 2026
EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT SUNDAY
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING
HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON CDT SUNDAY
WHAT
Heat index values from 110 to 115 are expected both Saturday afternoon and Sunday afternoon. Overnight lows in the upper 70s to locally, the mid 80s are expected Saturday night. WHERE
Portions of east central and northeast Oklahoma. WHEN
For the first Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to noon CDT Sunday. For the second Extreme Heat Warning, from noon to 8 PM CDT Sunday. IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. ADDITIONAL DETAILS
Effects from this extended heat can accumulate over the days, especially for those with limited access to air conditioning given how warm the nights are staying. It is important to check in on those vulnerable to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT SUNDAY
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING
HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON CDT SUNDAY
WHAT
Heat index values from 110 to 115 are expected both Saturday afternoon and Sunday afternoon. Overnight lows in the upper 70s to locally, the mid 80s are expected Saturday night. WHERE
Portions of east central and northeast Oklahoma. WHEN
For the first Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to noon CDT Sunday. For the second Extreme Heat Warning, from noon to 8 PM CDT Sunday. IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. ADDITIONAL DETAILS
Effects from this extended heat can accumulate over the days, especially for those with limited access to air conditioning given how warm the nights are staying. It is important to check in on those vulnerable to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
WEATHER ALERT
Issue Date: 1126 AM CDT Sat Aug 15 2026
EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT SUNDAY
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING
HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON CDT SUNDAY
WHAT
Heat index values from 110 to 115 are expected both Saturday afternoon and Sunday afternoon. Overnight lows in the upper 70s to locally, the mid 80s are expected Saturday night. WHERE
Portions of east central and northeast Oklahoma. WHEN
For the first Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to noon CDT Sunday. For the second Extreme Heat Warning, from noon to 8 PM CDT Sunday. IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. ADDITIONAL DETAILS
Effects from this extended heat can accumulate over the days, especially for those with limited access to air conditioning given how warm the nights are staying. It is important to check in on those vulnerable to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT SUNDAY
EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING
HEAT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON CDT SUNDAY
WHAT
Heat index values from 110 to 115 are expected both Saturday afternoon and Sunday afternoon. Overnight lows in the upper 70s to locally, the mid 80s are expected Saturday night. WHERE
Portions of east central and northeast Oklahoma. WHEN
For the first Extreme Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM this evening to noon CDT Sunday. For the second Extreme Heat Warning, from noon to 8 PM CDT Sunday. IMPACTS
Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. ADDITIONAL DETAILS
Effects from this extended heat can accumulate over the days, especially for those with limited access to air conditioning given how warm the nights are staying. It is important to check in on those vulnerable to heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
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