Deep southerly flow provided a deep layer of monsoon moisture to the region with|slow moving storms. The high moisture content and slow storm motion contributed to the heavy rain and flash flooding in Dona Ana County.
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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.
Deep southerly flow provided a deep layer of monsoon moisture to the region with|slow moving storms. The high moisture content and slow storm motion contributed to the heavy rain and flash flooding in Dona Ana County.
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 11, 12:47 PM MST, 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM 147 PM MDT SUN JUL 11 2010 .SYNOPSIS... AN UPPER LEVEL DISTURBANCE WILL COMBINE WITH VERY MOIST AIR TO GENERATE SHOWERS AND THUNDERSTORMS ACROSS SOUTHERN NEW MEXICO AND WESTERN TEXAS THIS AFTERNOON AND TONIGHT. LOCALLY HEAVY RAINS AND FLASH FLOODING MAY OCCUR WITH A FEW OF THE STORMS. HIGH PRESSURE ALOFT WILL BRING WARM MOSTLY DRY WEATHER FOR THE REMAINDER OF THE WEEK. && .DISCUSSION... EXTREMELY MOIST AIR MASS MASS COVERING THE CWA THIS AFTERNOON WITH PRECIPITABLE WATER NEAR 1.8 INCHES. IN ADDITION AIR MASS IS MODERATELY UNSTABLE ACROSS MOST LOCATIONS WITH CAPES ABOVE 1000 J/KG. COMPLEX SITUATION ALOFT AS VORTICITY CENTER NEAR THE NEW MEXICO BOOT HEEL MAY PHASE WITH SHORT WAVE ENTERING THE CWA FROM THE NORTHWEST. AS THIS OCCURS DYNAMIC LIFT WILL CONTINUE WITH WIDESPREAD DEEP CONVECTION THIS AFTERNOON INTO THIS EVENING. DEEP MOISTURE INDICATES VERY EFFICIENT WARM CLOUD PROCESSES WILL OCCUR. IN FACT SERIOUS FLOODING HAS BEEN REPORTED OVER NORTHERN DONA AN COUNTY EARLY THIS AFTERNOON. WEST TO SOUTHWEST WINDS ALOFT WILL ALSO INCREASE CREATING SHEAR PROFILE FAVORABLE FOR A FEW WEAK BUT HEAVY RAIN PRODUCING HIGH PRECIPITATION SUPERCELLS IN ADDITION TO BACK BUILDING STORMS. THUS HEAVY RAIN AND FLOOD THREAT WILL CONTINUE INTO TONIGHT. ON MONDAY A WEAK UPPER WAVE WILL MOVE ACROSS THE CWA CAUSING ISOLATED TO SCATTERED CONVECTION. THEREAFTER STRONG UPPER RIDGE WILL BUILD ACROSS NEW MEXICO INCLUDING A STRONG 500 MB HEIGHT CENTER OVER NORTHERN PORTIONS OF THE STATE. THIS WILL BRING WARM AIR AND SUBSIDENCE ALOFT FOR THE REMAINDER OF THE WEEK WITH WARM MOSTLY DRY WEATHER EXPECTED. && .AVIATION...VALID 12/00Z-13/00Z A TROPICAL DISTURBANCE WILL SPREAD SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE AREA TONIGHT WITH SHRA/TSRA POSSIBLE AT ALL TAF SITES. FEW-SCT010-020 SCT-BKN030-060 EXPECTED AT ALL TAF SITES WITH TEMPO 1-3SM SHRA/TSRA BKN010-020. AREA MTNS WILL FQTLY BE OBSCURED BY CLOUDS. DRIER AIR WILL BRING VFR CONDITIONS WITH ONLY ISOLATED AFTERNOON SHRA/TSRA FOR MONDAY AFTERNOON. && .FIRE WEATHER... THE REMNANTS OF A TROPICAL DISTURBANCE WILL MOVE FROM THE BOOTHEEL ACROSS SOUTHERN NEW MEXICO TONIGHT AND OUT INTO THE PLAINS MONDAY. THE VERY MOIST AIR WITH THE DISTURBANCE WILL FUEL SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN THIS EVENING INTO TONIGHT WITH POSSIBLE FLASH FLOODING. WEST WINDS ALOFT WILL BRING DRIER AND WARMER AIR TO THE REGION AT LEAST THROUGH THE MIDDLE OF THE WEEK...BUT THERE WILL STILL BE A SLIGHT CHANCE OF ISOLATED SHOWERS AND THUNDERSTORMS EACH AFTERNOON WITH THE BEST CHANCES IN THE GILA AND THE SACRAMENTO MOUNTAINS. MINIMUM HUMIDITY WILL REMAIN WELL ABOVE 15 PERCENT WITH GENERALLY LIGHT WINDS THROUGH AT LEAST WEDNESDAY. HIGH PRESSURE ALOFT BUILDING OVER THE REGION MAY SHIFT FARTHER NORTH AFTER MIDWEEK...ALLOWING EAST WINDS TO BRING MOIST AIR BACK TO THE REGION WITH INCREASED SHOWER AND THUNDERSTORM ACTIVITY. && .PRELIMINARY POINT TEMPS/POPS... EL PASO 70 93 72 98 73 / 50 20 10 10 10 SIERRA BLANCA TX 63 90 64 95 65 / 50 20 10 10 10 LAS CRUCES 67 93 69 99 69 / 50 20 10 10 10 ALAMOGORDO 65 91 67 97 66 / 50 20 10 10 10 CLOUDCROFT 49 70 50 76 51 / 50 30 20 20 20 TRUTH OR CONSEQUENCES 65 91 66 98 66 / 50 20 10 10 10 SILVER CITY 57 84 59 90 59 / 50 30 20 20 20 DEMING 64 93 66 98 66 / 50 20 10 10 10 LORDSBURG 64 92 65 98 65 / 50 20 10 10 10 && .EPZ WATCHES/WARNINGS/ADVISORIES... NM...NONE. TX...NONE. && 05 ROGASH/21 PARK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM 1215 AM MDT SUN JUL 11 2010 NMZ022>025-030>032-TXZ055-056-121745- 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- 1215 AM MDT SAT JUL 11 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 SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS THROUGH TONIGHT. PRIMARY HAZARD WILL BE LOCALLY HEAVY RAINS WITH ISOLATED LOCATIONS RECEIVING OVER 2 INCHES OF RAINFALL. THUS FLASH FLOODING IS POSSIBLE. A FEW STORMS MAY ALSO PRODUCE SMALL HAIL AND WIND GUSTS TO 50 MPH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ON MONDAY WITH BRIEF HEAVY RAINS...SMALL HAIL AND WIND GUSTS TO 50 MPH POSSIBLE. MOSTLY DRY WITH ONLY A SLIGHT CHANCE OF THUNDERSTORMS TUESDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUIRED THIS AFTERNOON AND EVENING. ROGASH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EL PASO TX 1207 PM MDT SUN JUL 11 2010 NMZ022>025-030>032-TXZ055-056-112000- SIERRA COUNTY LAKES REGION NM-SOUTHERN DESERT NM- SOUTHWEST DESERT/MIMBRES BASIN NM-SOUTHERN SACRAMENTO MOUNTAINS NM- HUDSPETH TX-EL PASO TX-SOUTHWEST MOUNTAINS/LOWER GILA REGION NM- TULAROSA BASIN/SOUTHERN DESERT NM-SOUTHWEST DESERT/BOOTHEEL NM- 1207 PM MDT SUN JUL 11 2010 ...THUNDERSTORMS WITH LOCALLY HEAVY RAIN THIS AFTERNOON... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER SOUTHWESTERN NEW MEXICO AND FAR WEST TEXAS THIS AFTERNOON INTO THIS EVENING. THESE STORMS COULD PRODUCE OVER 2 INCHES OF RAIN IN LESS THAN AN HOUR. THIS COULD LEAD TO FLASH FLOODING... ALONG ARROYOS...NARROW CANYONS...LOW WATER CROSSINGS AND OTHER LOW LYING AREAS. LISTEN TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR WEATHER UPDATES. NEVER ATTEMPT TO DRIVE OR WALK ACROSS WATER COVERED ROADS BUT INSTEAD SEEK ALTERNATE ROUTES OF TRAVEL. TURN AROUND...DON'T DROWN. PARK
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM 200 PM MDT SUN JUL 11 2010 NMZ022>025-030>032-TXZ055-056-120200- 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- INCLUDING THE CITIES OF...SILVER CITY...TRUTH OR CONSEQUENCES... ALAMOGORDO...MESCALERO...CLOUDCROFT...TIMBERON...LORDSBURG... DEMING...LAS CRUCES...EL PASO...SIERRA BLANCA...DELL CITY 200 PM MDT SUN JUL 11 2010 ...SHOWERS AND THUNDERSTRORMS WITH HEAVY RAINS POSSIBLE THIS AFTERNOON AND TONIGHT... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS SOUTHERN NEW MEXICO AND FAR WEST TEXAS THIS AFTERNOON AND THIS EVENING. A FEW STORMS COULD PRODUCE OVER 2 INCHES OF RAIN IN LESS THAN AN HOUR. THUS FLASH FLOODING IS POSSIBLE...ESPECIALLY ALONG ARROYOS...NARROW CANYONS...LOW WATER CROSSINGS AND OTHER LOW LYING AREAS. LISTEN TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR WEATHER UPDATES. NEVER ATTEMPT TO DRIVE OR WALK ACROSS WATER COVERED ROADS BUT INSTEAD SEEK ALTERNATE ROUTES OF TRAVEL. TURN AROUND...DON'T DROWN. ROGASH
The El Paso radar (KEPZ), 106 km away, was scanning. The volume nearest the first event began at 19:57 UTC.
1 flash flood. Local standard time, as filed.
Water was reported going over West Canal Road Bridge in Hatch. In the Rincon/Radium Springs area near Santiago Peak Road and Highway 185 flooding pushed cars off of road.
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: 248195.