A deep trough was located across the western United States with strong south-southwest flow over far west Texas. Southeast surface winds kept dew points near 60 in Hudspeth County with tail end of a 100+ knot jet over the area provided sufficient shear and instability for severe thunderstorms to develop.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS EPZ wrote it up.
A deep trough was located across the western United States with strong south-southwest flow over far west Texas. Southeast surface winds kept dew points near 60 in Hudspeth County with tail end of a 100+ knot jet over the area provided sufficient shear and instability for severe thunderstorms to develop.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS El Paso, TX wrote its last area forecast discussion before the first event at Sep 26, 1:06 PM MST, 2 hours 4 minutes earlier.
Area Forecast Discussion National Weather Service El Paso Tx/Santa Teresa NM 206 PM MDT Tue Sep 26 2017 .SYNOPSIS... Easterly winds will push moist unstable air into southern New Mexico and west Texas while a slow moving low pressure system approaches from the west. This weather pattern will bring showers and thunderstorms to much of the region through Saturday with a few storms producing heavy rainfalls...hail or damaging winds. Westerly winds will bring a return to warmer dry weather Sunday and Monday. && .DISCUSSION... Active weather pattern is becoming established over New Mexico and far west Texas. An upper level low was centered over southern Nevada early this afternoon with associated trough axis extending southward into southern Baja. The low center will drift slowly southward into central Arizona by Wednesday afternoon before drifting north again. During this time ridge aloft will be aligned on a north to south axis through central Texas. The resultant circulation will include mid level south to southwest winds which will transport abundant moisture from the Gulf of California and/or Gulf of Mexico. In addition expect several short waves to eject to the northeast ahead of primary trough axis into southern New Mexico and west Texas with this scenario persisting into Saturday. Meanwhile at low levels high pressure center will move into the plains this evening with clockwise flow around it supporting easterly winds into the southern Rockies. Consequently an associated cold front will be moving to the southwest through the CWA today with the easterly winds behind it advecting cooler but more moist air mass with surface dewpoints rising above 50 F. This pattern will continue into Saturday as the surface high settles into Texas causing low level winds to become more from the southeast thus maintaining moisture transport and higher dewpoints. The deep abundant moisture inflow will push precipitable water above an inch most areas by this evening with this situation also continuing into Saturday. The moisture will contribute to air mass destabilization with CAPE's around 800 to 1600 each day. Expect embedded short waves to bring periods of enhanced upward motion aloft while overall pattern will induce isentropic lift as south to southwest flow aloft pushes warm moist air up and over the cooler air mass at thew surface. These factors indicate scattered to numerous thunderstorms tonight through Saturday. 40 to 50 kt southwest winds aloft over low level easterlies will result in 0-6 km deep layer shear around 40 to 50 kt through Thursday with 0-2 km helicity above 100 during this time. This indicates an environment favorable for updraft rotation and enhancement. With wet bulb zero heights around 9000 feet a few storms may produce large hail and even damaging downdrafts as DCAPE's will be over 1000 J/kg. Abundant moisture also suggests potential high precipitation supercell development with associated torrential rainfalls and possible flash flooding. The wind shear should diminish somewhat Friday and Saturday but moisture and instability may still support sufficient updraft strengths for more hail and heavy rains. West to southwest winds will bring a return to warmer dry weather Sunday and Monday. Longer range guidance forecasts a return of moist south to southeast winds Tuesday resulting in a few thunderstorms. && .AVIATION...Valid 27/00Z-28/00Z... P6SM SCT-BKN060-080 with scattered west to numerous east VRB25G40KT 1-3SM TSRAGS BKN020-040 especially before 06Z. Expect gradual lowering of clouds after 06Z, mainly along and east of river where some areas of BKN015-025 possible through 16Z. Scattered storms will continue after 12Z through end of forecast period. Winds generally SE to E at 10-20G30KTS with some stronger winds on western mountain slopes. && .FIRE WEATHER... Plenty of moisture is moving west through the forecast area which will remain through the end of the week. Expect scattered to numerous storms across the region as an upper low/trough remains to the west with a threat for some severe storms with strong winds and large hail, plus heavy rain and localized flooding will be possible. Temperatures for through the remainder of the week will be below normal with high relative humidities. Driest area will be in bootheel of New Mexico. Drier and warmer air is expected to start moving in over the weekend and early next week as upper flow becomes more westerly. && .PRELIMINARY POINT TEMPS/POPS... El Paso 61 75 60 77 / 60 40 50 40 Sierra Blanca 56 73 56 72 / 60 40 50 40 Las Cruces 58 74 57 75 / 60 50 50 40 Alamogordo 57 76 56 76 / 60 40 50 40 Cloudcroft 43 57 43 57 / 60 50 60 60 Truth or Consequences 55 72 56 74 / 60 60 60 50 Silver City 52 69 52 70 / 40 60 60 40 Deming 58 75 56 76 / 50 60 50 40 Lordsburg 57 77 57 78 / 30 50 40 30 West El Paso Metro 61 74 61 76 / 60 40 50 40 Dell City 56 70 57 73 / 60 40 50 40 Fort Hancock 59 76 59 77 / 60 40 50 40 Loma Linda 55 67 55 70 / 60 40 50 40 Fabens 60 74 59 78 / 60 40 50 40 Santa Teresa 59 74 59 76 / 60 50 50 40 White Sands HQ 59 73 59 75 / 60 40 50 40 Jornada Range 57 75 56 75 / 60 50 50 40 Hatch 58 75 57 76 / 60 50 50 40 Columbus 59 77 58 77 / 50 60 50 40 Orogrande 58 74 58 75 / 60 40 50 40 Mayhill 45 58 46 60 / 60 50 60 60 Mescalero 46 62 46 63 / 60 50 60 60 Timberon 46 63 46 62 / 60 50 60 60 Winston 48 65 46 66 / 60 70 60 50 Hillsboro 53 70 52 73 / 50 60 60 50 Spaceport 56 73 55 75 / 60 50 60 40 Lake Roberts 47 69 47 70 / 50 60 60 50 Hurley 53 70 52 72 / 40 60 60 40 Cliff 51 77 49 77 / 30 60 60 40 Mule Creek 52 73 51 74 / 20 50 40 30 Faywood 54 71 52 72 / 50 60 60 40 Animas 57 80 57 80 / 20 40 40 30 Hachita 56 78 55 78 / 40 50 40 30 Antelope Wells 56 80 56 79 / 30 40 40 30 Cloverdale 55 79 54 77 / 20 30 30 20 && .EPZ WATCHES/WARNINGS/ADVISORIES... NM...None. TX...None. && 05 Rogash/26 Grzywacz
Hazardous Weather Outlook National Weather Service El Paso Tx/Santa Teresa NM 1023 AM MDT Tue Sep 26 2017 NMZ401>417-TXZ418>424-272030- Upper Gila River Valley-Southern Gila Highlands/Black Range-Southern Gila Foothills/Mimbres Valley- Southwest Desert/Lower Gila River Valley-Lowlands of the Bootheel- Uplands of the Bootheel-Southwest Desert/Mimbres Basin-Eastern Black Range Foothills-Sierra County Lakes-Northern Dona Ana County- Southern Dona Ana County/Mesilla Valley-Central Tularosa Basin- Southern Tularosa Basin-West Slopes Sacramento Mountains Below 7500 Feet-Sacramento Mountains Above 7500 Feet-East Slopes Sacramento Mountains Below 7500 Feet-Otero Mesa-Western El Paso County- Eastern/Central El Paso County-Northern Hudspeth Highlands/Hueco Mountains-Salt Basin-Southern Hudspeth Highlands-Rio Grande Valley of Eastern El Paso/Western Hudspeth Counties-Rio Grande Valley of Eastern Hudspeth County- 1023 AM MDT Tue Sep 26 2017 This Hazardous Weather Outlook is for portions of south central New Mexico, southwest New Mexico, and southwest Texas. .DAY ONE...This Afternoon and Tonight Scattered to numerous showers and thunderstorms. A few storms may produce hail over an inch in diameter and wind gusts to 60 mph. Locally heavy rains also possible with rainfall amounts exceeding 2 inches over isolated locations resulting in flash flooding. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Scattered to numerous showers and thunderstorms Wednesday through Saturday. A few storms may produce hail over an inch in diameter and wind gusts to 60 mph. Locally heavy rains also possible with rainfall amounts exceeding 2 inches over isolated locations resulting in flash flooding Wednesday through Saturday. Mostly dry non hazardous weather expected Sunday and Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today through Saturday to report large hail...damaging winds and heavy rains with flooding. Rogash
The El Paso radar (KEPZ), 95 km away, was scanning. The volume nearest the first event began at 22:08 UTC.
1 thunderstorm wind. Local standard time, as filed.
A couple of mobile homes were destroyed by a microburst with winds estimated at 70+ mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2017Every state in 2017This day in weather historyWarnings in Texas, September 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 723083.