Heat — Southern Hidalgo County, Texas

2024-06-01 · Southern Hidalgo County, Texas

Event narrative

McAllen International Airport (KMFE) recorded max heat indices between 111-114F for 3 hours, from 12:53 AM-4:55 PM CDT on June 1, 2024. The Remote Automated Weather Station (RAWS) at Santa Ana NWR east of Pharr recorded a peak heat index of 113.6F at 145 PM CDT, with 112F+ continuing through 445 CDT. Given the site's slight high bias, it can be assumed that peak values were closer to 111F for this period. The Automated Weather Observing Station (AWOS) at Mid-Valley Airport in Weslaco fell just shy of 111F.

Wider weather episode

A strong subtropical atmospheric ridge, or heat dome, remained anchored over the region, creating up to six days of dangerous heat conditions at the start of June. At five thousand feet above ground, the temperature soared anywhere from 78 to 90 degrees Fahrenheit, which translated into a continuation of what was a short-lived, but intense heat wave over the region with actual temperatures rising into the upper 90s to mid 100s from June 1-6. The combination of heat and dewpoint temperatures well into the 70s to around 80, and heat index values ranged between a sweltering 111F-1xxF across parts of Deep South Texas and the Rio Grande Valley. The hottest temperatures were once again located from the mid-lower Rio Grande Valley northward along I-69E and I-69C. The hottest feeling day was June 5th, from Brooks/Hidalgo County to Cameron, Willacy, and Kenedy County.

Source: NOAA Storm Events Database, event_id 1192012. Narrative written by the NWS forecast office that issued the report.