Old Res Weather

Lexington, Massachusetts, USA

35°F
2/16/2025 7:17pm 
  • Lexington Conditions: Partly cloudy
  • Temperature: 35.1°F / 1.7°CColder 0.1°F than last hour.
  • Dew Point: 32.4°FDecreased 0.1°Fsince last hour.
  • Relative Humidity: 90% 
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.00 inFalling 0.05 inHg/hr Falling Slowly
  • Visibility: 10 miles
  • Rain Today: 0.01 in
  • UV Index: $VPuv None
  •   

Extreme Heat Warning

Issued by the National Weather Service - NWS Flagstaff, AZ

    EXTREME HEAT WARNING  

Grand Canyon Country, AZ

Extreme Heat Warning issued July 27 at 11:54AM MST until August 2 at 8:00PM MST by NWS Flagstaff AZ

EXTREME HEAT WARNING IN EFFECT FROM 10 AM THURSDAY TO 8 PM MST SUNDAY BELOW 4000 FEET

Areas Affected: Grand Canyon Country

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Monday 11:54am MST

Alert Effective: Monday 11:54am MST

Alert Expires: Thursday 10:00am MST (expect updated alert by this time)

Event Onset: Thursday 10:00am MST

Event Ends: Sunday 8:00pm MST

Issued by: NWS Flagstaff AZ

Details: 
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM THURSDAY TO 8 PM MST SUNDAY BELOW 4000 FEET...

* WHAT...Dangerously hot conditions expected below 4000 feet, with
daytime temperatures ranging around 100 degrees at Havasupai
Gardens, and 112 to 116 degrees at Phantom Ranch.

* WHERE...Lower elevations of the Grand Canyon.

* WHEN...From 10 AM Thursday to 8 PM MST Sunday.

* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.

Information: 
This warning is reserved for only the hottest days of the year and is
issued when temperatures are expected to rise to dangerous levels.

Day hikers on Bright Angel Trail should descend no farther than 1 1/2
miles from the upper trailhead. Between the hours of 10 AM and 4 PM,
hikers should be out of the canyon or at Havasupai Gardens or Bright
Angel campgrounds, physical activity is discouraged. All hikers
should have adequate gear, including a wide-brimmed hat, sunscreen,
salty snacks, sufficient water, and electrolyte mix. Doubling your
calorie intake helps maintain your energy.

Hike smart.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.879a7bd4276b7acd1a530f2711e0e40615f9302a.001.1
Codes: AZZ006
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.879a7bd4276b7acd1a530f2711e0e40615f9302a.001.1