Residual monsoon moisture combined with a slow moving trough over southern New Mexico to produce slow moving, heavy rain producing thunderstorms over the Gila.
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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.
Residual monsoon moisture combined with a slow moving trough over southern New Mexico to produce slow moving, heavy rain producing thunderstorms over the Gila.
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 Jul 12, 12:19 PM MST, 3 hours 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM 119 PM MDT MON JUL 12 2010 .SYNOPSIS... HIGH PRESSURE WILL BRING VERY WARM MOSTLY DRY WEATHER TO SOUTHERN NEW MEXICO AND WESTERN TEXAS THIS WEEK WITH ONLY A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY. && .DISCUSSION... AFTER SUNDAY'S FLOODS MUCH MORE QUIESCENT WEATHER IS ANTICIPATED THIS WEEK. ON THE LARGER SCALE STRONG UPPER RIDGE WILL EXTEND ACROSS NORTHERN AND/OR CENTRAL NEW MEXICO WITH 500 MB HEIGHT CENTERS JUST NORTH OF THE CWA. ASSOCIATED LARGE SCALE SUBSIDENCE AND WARM AIR ALOFT WILL THUS BRING VERY WARM MOSTLY DRY WEATHER THROUGH THE PERIOD. HOWEVER CANNOT EXCLUDE MENTION OF CONVECTION FROM THE FORECASTS. AT THE SURFACE A MONSOONAL PATTERN WILL PERSIST WITH THERMAL HEAT LOW OVER WESTERN ARIZONA AND HIGH PRESSURE ACROSS EASTERN TEXAS. THIS SITUATION WILL INDUCE LOW LEVEL EASTERLY WINDS WITH TRANSPORT OF MOIST AIR FROM THE GULF OF MEXICO. AS A RESULT PRECIPITABLE WATER WILL REMAIN MOSTLY ABOVE AN INCH. AND DESPITE WARM AIR ALOFT THE HEAT AND MOISTURE AT LOW LEVELS WILL CREATE WEAKLY UNSTABLE AIR MASS WITH AFTERNOON CAPES AROUND 500 J/KG. WEAK SHORT WAVES MAY ALSO MOVE INTO THE CWA FROM THE EAST. THUS WILL MENTION SLIGHT CHANCES OF THUNDER THROUGH THE FORECAST PERIOD. && .AVIATION...VALID 13/00Z-14/00Z AN UPPER LEVEL DISTURBANCE FROM THE NORTHWEST WILL SCOUR OUT THE SUBTROPICAL THROUGH TUESDAY. 00Z-06Z: EAST OF A SVC-ELP LINE...SCT050 SCT120 SCT250 ISOLD -TSRA BKN050CB BKN250...AFT 06Z: SCT120 SCT250 WITH FEW-SCT050 TCU AFT 18Z. && .FIRE WEATHER... AN UPPER LEVEL DISTURBANCE OVER NEW MEXICO HAS SUPPRESSED THE HIGH PRESSURE ALOFT AND IS SLOWLY SCOURING OUT THE SUBTROPICAL MOISTURE TO THE EAST AS THE UPPER TROUGH MOVES INTO WEST TEXAS TODAY. ENOUGH RESIDUAL MOISTURE REMAINS FOR SOME ISOLATED AFTN AND EARLY EVENING THUNDERSTORMS ACROSS THE FIRE ZONES PARTICULARLY EASTERN PORTIONS EAST OF THE RIO GRANDE. THE HAINES INDEX WILL RANGE IN THE 3 RANGE TODAY EXCEPT FOR 4 IN GRANT COUNTY AND 2 IN HUDSPETH COUNTY AND WILL BECOME MOSTLY 4 AND 5 TUES EXCEPT FOR 3 IN HUDSPETH AND EASTERN OTERO COUNTY. MIN RH VALUES WILL RANGE MOSTLY IN THE 30S TODAY EXCEPT FOR THE 40S IN THE SACRAMENTOS AND DRY TO THE 20S ON TUES ALL AREAS. SOMEWHAT DRIER WEATHER IS EXPECTED TODAY AND TUESDAY WITH GENERALLY SUNNY SKIES AND WARMING TEMPERATURES. MOISTURE WILL RETURN BY MIDWEEK AND A FEW AFTERNOON OR EVENING THUNDERSTORMS ARE A POSSIBILITY FOR LATER IN THE WEEK AND OVER THE WEEKEND. && .PRELIMINARY POINT TEMPS/POPS... EL PASO 72 99 74 100 74 / 10 10 10 10 10 SIERRA BLANCA TX 64 96 66 97 66 / 10 10 10 10 10 LAS CRUCES 69 99 70 100 70 / 10 10 10 10 10 ALAMOGORDO 67 97 67 96 67 / 10 10 10 10 10 CLOUDCROFT 50 77 52 75 52 / 10 20 20 20 10 TRUTH OR CONSEQUENCES 66 97 67 98 67 / 10 10 10 10 10 SILVER CITY 59 91 60 91 60 / 10 10 10 20 10 DEMING 66 99 67 98 67 / 10 10 10 10 10 LORDSBURG 65 99 66 98 66 / 10 10 10 10 10 && .EPZ WATCHES/WARNINGS/ADVISORIES... NM...NONE. TX...NONE. && 05 ROGASH 20 NOVLAN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM 235 PM MDT MON JUL 12 2010 NMZ022>025-030>032-TXZ055-056-131745- SOUTHWEST MOUNTAINS/LOWER GILA REGION-SIERRA COUNTY LAKES REGION- TULAROSA BASIN/SOUTHERN DESERT-SOUTHERN SACRAMENTO MOUNTAINS- SOUTHWEST DESERT/BOOTHEEL-SOUTHWEST DESERT/MIMBRES BASIN- SOUTHERN DESERT-EL PASO-HUDSPETH- 235 PM MDT MON JUL 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL NEW MEXICO...SOUTHWEST NEW MEXICO AND SOUTHWEST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS WITH MOST AREAS REMAINING DRY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. GENERALLY WARM AND DRY WITH ONLY SLIGHT CHANCES OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION SHOULD NOT BE REQUIRED. ROGASH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EL PASO TX 402 PM MDT MON JUL 12 2010 NMZ022-023-122300- SIERRA COUNTY LAKES REGION NM-SOUTHWEST MOUNTAINS/LOWER GILA REGION NM- 402 PM MDT MON JUL 12 2010 ...STRONG THUNDERSTORM THREATENING CENTRAL SIERRA COUNTY... AT 352 PM MDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM 6 MILES EAST OF MONTICELLO...MOVING SOUTH AT 10 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS IMPACTED INCLUDE... MONTICELLO... PLACITAS... ELEPHANT BUTTE... CUCHILLO... ALAMOSA CANYON... NORTH MONTICELLO POINT... THIS STORM WILL AFFECT PORTIONS OF THE I-10 CORRIDOR BETWEEN TRUTH OR CONSEQUENCES AND ALAMOSA CANYON. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. HARDIMAN
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EL PASO TX 413 PM MDT MON JUL 12 2010 NMZ031-122300- SOUTHWEST DESERT/MIMBRES BASIN NM- 413 PM MDT MON JUL 12 2010 ...STRONG THUNDERSTORMS THREATENING DEMING AREA THROUGH 500 PM MDT... AT 404 PM MDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM 8 MILES NORTH OF DEMING...MOVING SOUTH AT 15 MPH. THIS STORM WILL MOVE INTO THE NORTH SIDE OF DEMING AROUND 430 PM. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN...DIME SIZED HAIL... AND DANGEROUS CLOUD TO GROUND LIGHTNING. LOCATIONS IMPACTED INCLUDE... DEMING... SUNSHINE... SPRING CANYON STATE PARK... ROCK HOUND STATE PARK... THIS STATEMENT INCLUDES PORTIONS OF I-10 BETWEEN AKELA AND GAGE... AS WELL AS PORTIONS OF US-180 AND STATE HIGHWAY 26. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. HARDIMAN
The El Paso radar (KEPZ), 219 km away, was scanning. The volume nearest the first event began at 22:44 UTC.
1 flash flood. Local standard time, as filed.
A truck was swept into creek near Highway 180 and mile marker 82.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Mexico in 2010Every state in 2010This day in weather historyWarnings in New Mexico, July 2010
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: 248204.