Severe Thunderstorm Warning 70, NWS El Paso, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM
102 PM MDT SUN JUL 1 2007

.SYNOPSIS...
HIGH PRESSURE IN THE UPPER ATMOSPHERE WILL BRING VERY WARM WEATHER
TO THE BORDERLAND EARLY THIS WEEK. LOW LEVEL EASTERLY WINDS WILL
ALSO TRANSPORT MOISTURE INTO THE REGION SO THERE WILL BE A FEW
AFTERNOON AND EVENING THUNDERSTORMS. THUNDERSTORMS MAY INCREASE
LATER IN THE WEEK AS AN UPPER LEVEL LOW PRESSURE SYSTEM
APPROACHES FROM THE EAST.

&&

.DISCUSSION...
TYPICAL SUMMER PATTERN EXPECTED THROUGH WEDNESDAY MAKES FORECAST A
BIT OF A CHALLENGE WITH SITUATION POSSIBLY BECOMING MORE
COMPLICATED LATER PERIODS. HIGH PRESSURE ALOFT WILL BECOME
ESTABLISHED OVER OVER SOUTHWESTERN UNITED STATES THROUGH WEDNESDAY
WITH 500 MB HEIGHT CENTER DRIFTING/WOBBLING AROUND ARIZONA.
CIRCULATION AROUND THE HIGH WILL KEEP THE CWA IN GENERALLY NORTH
TO NORTHEAST FLOW ALOFT WITH MID LEVEL WIND SPEEDS AROUND 30 KT
EACH DAY. WEAK EMBEDDED WAVES MAY EXIST WITHIN THIS FLOW AND MOVE
ACROSS NEW MEXICO AND WEST TEXAS BUT TIMING AND LOCATION OF THESE
FEATURES DIFFICULT IF NOT IMPOSSIBLE TO DETERMINE MORE THAN 12
HOURS IN ADVANCE. INDEED EARLY THIS MORNING SURPRISE THUNDERSTORMS
MOVED ACROSS THE EL PASO METRO AREA DUE TO A SMALL SCALE INITIALLY
UNDETECTED UPPER WAVE.

AT LOW LEVELS THE USUAL BROAD THERMAL TROUGH WILL ALSO COVER THE
SOUTHWEST BUT MODELS SHOWING TROUGH AXIS ALIGNED THROUGH WESTERN
OR CENTRAL NEW MEXICO THROUGH TUESDAY BEFORE DRIFTING BACK INTO
ARIZONA WEDNESDAY. THIS TROUGH COMBINED WITH HIGH PRESSURE OVER
SOUTHERN PLAINS WILL GENERATE LOW LEVEL EAST TO SOUTHEAST THROUGH
RIO GRANDE THROUGH TUESDAY AND ACROSS ENTIRE CWA WEDNESDAY. SO
EXPECT COMBINATION OF MOISTURE AND HEATING PLUS POSSIBLE WAVES
WILL BE SUFFICIENT FOR AFTERNOON AND EVENING CONVECTION EAST AND
HIGHER MOUNTAIN AREAS THROUGH TUESDAY AS PRECIPITABLE WATER
AMOUNTS WILL BE ABOUT AN INCH LOWLANDS WITH CAPES NEAR 1000 J/KG.
BY WEDNESDAY MOISTURE SHOULD BE FAR ENOUGH WEST FOR A SLIGHT RISK
OF THUNDER. PROBLEM REMAINS IT IS DIFFICULT TO DETERMINE
IF/WHEN/WHERE ANY UPPER WAVES WILL MOVE INTO THE AREA SINCE IF
WAVES DO NOT MATERIALIZE THEN SUBSIDENCE AND WARM AIR ALOFT WILL
KEEP CONVECTION INHIBITED. SO IN THE END WILL RELUCTANTLY CONTINUE
BROAD BRUSHING ISOLATED CONVECTION THROUGH WEDNESDAY.

MODELS HAVE BEEN CONSISTENT ON THE LARGE SCALE IN MOVING EASTERLY
WAVE/INVERTED TROUGH SLOWLY EAST THIS WEEK WITH SYSTEM ENTERING
TEXAS BIG BEND AREA BY THURSDAY. APPROACH OF SYSTEM WILL
STRENGTHEN AND DEEPEN EASTERLY WIND AND MOISTURE FLUX WITH
PRECIPITABLE WATER AMOUNTS WELL ABOVE AN INCH BY FRIDAY. SO FOR
LATER PERIODS WILL INCREASE CONVECTIVE COVERAGE.

&&

.AVIATION...
ISOLATED AREAS OF MVFR CEILINGS AND VISIBILITIES IN SHOWERS AND
THUNDERSTORMS...MAINLY DURING THE AFTERNOON AND EVENING. OTHERWISE
MOSTLY VFR CONDITIONS THROUGH MONDAY AFTERNOON.

&&

.PRELIMINARY POINT TEMPS/POPS...
EL PASO                 73 102  75 102  75 /  10  10  10  10  10
SIERRA BLANCA TX        66  95  67  94  67 /  10  10  10  10  10
LAS CRUCES              71 103  71 103  71 /  10  10  10  10  10
ALAMOGORDO              70 101  67 102  67 /  10  10  10  10  10
CLOUDCROFT              54  75  55  76  53 /  20  20  20  20  20
TRUTH OR CONSEQUENCES   70 102  69 103  69 /   0   0   0   0   0
SILVER CITY             63  94  64  96  64 /  10  10  10  10  10
DEMING                  69 102  69 101  69 /   0   0   0   0   0
LORDSBURG               68 104  70 104  70 /   0   0   0   0   0

&&

.EPZ WATCHES/WARNINGS/ADVISORIES...
NM...NONE.
TX...NONE.
&&

05/99

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM
1102 AM MDT SUN JUL 01 2007

NMZ022>025-030>032-TXZ055-056-021715-
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-
1102 AM MDT SUN JUL 01 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
NEW MEXICO...SOUTHWEST NEW MEXICO AND SOUTHWEST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.
ISOLATED SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND
EVENING...MAINLY EAST OF THE RIO GRANDE. FEW STORMS MAY PRODUCE
SMALL HAIL...WIND GUSTS TO 50 MPH AND BRIEF HEAVY RAINS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
MOSTLY WARM AND DRY WITH SLIGHT CHANCES FOR AFTERNOON AND EARLY
EVENING SHOWERS AND THUNDERSTORMS SUNDAY THROUGH WEDNESDAY. STORMS
MAY INCREASE IN COVERAGE AND INTENSITY THURSDAY THROUGH SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE SHOULD NOT BE REQUIRED.

ROGASH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM
306 PM MDT SUN JUL 1 2007

TXZ055-012215-
EL PASO-
INCLUDING THE CITY OF...EL PASO
306 PM MDT SUN JUL 1 2007

...STRONG THUNDERSTORMS MOVING INTO EL PASO COUNTY THIS AFTERNOON...

A LINE OF THUNDERSTORMS HAS DEVELOPED ACROSS SOUTH CENTRAL NEW
MEXICO...AND ARE EXPECTED TO MOVE SOUTHWEST INTO EL PASO COUNTY
SHORTLY. MAIN THREATS WITH THESE STORMS WILL BE STRONG GUSTY WINDS
TO 50 MILES PER HOUR...LOCALLY HEAVY RAIN WITH PONDING OF WATER
ACROSS LOW WATER CROSSINGS...AND FREQUENT CLOUD TO GROUND
LIGHTNING.

MOTORISTS ARE URGED TO USE CAUTION WHEN APPROACHING AN AREA WHERE
WATER IS COVERING THE ROADWAY...OR WATER IS RUNNING ACROSS THE
ROADWAY. STAY TUNED TO NOAA WEATHER RADIO...OR LOCAL TELEVISION
STATIONS FOR THE LATEST UPDATES.

TRIPOLI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM
443 PM MDT SUN JUL 1 2007

TXZ055-012345-
EL PASO-
INCLUDING THE CITY OF...EL PASO
443 PM MDT SUN JUL 1 2007

...STRONG THUNDERSTORMS MOVING INTO SOUTHERN EL PASO COUNTY...

A LINE OF THUNDERSTORMS HAS MOVE INTO SOUTHERN EL PASO COUNTY
FROM THE NORTHEAST...AND WILL AFFECT THE LOWER RIO GRANDE VALLEY
FOR THE NEXT HOUR. MAIN THREATS WITH THESE STORMS WILL BE LOCALLY
HEAVY RAIN WITH PONDING OF WATER ACROSS LOW WATER CROSSINGS...AND
FREQUENT CLOUD TO GROUND LIGHTNING. IN ADDITION...STRONG GUSTY
WINDS TO 50 MILES PER HOUR AND BLOWING DUST IN A FEW AREAS...ARE
POSSIBLE WITH THESE STORMS.

MOTORISTS ARE URGED TO USE CAUTION WHEN APPROACHING AN AREA WHERE
WATER IS COVERING THE ROADWAY...OR WATER IS RUNNING ACROSS THE
ROADWAY. STAY TUNED TO NOAA WEATHER RADIO...OR LOCAL TELEVISION
STATIONS FOR THE LATEST UPDATES.

TRIPOLI