Alert archive / California / Excessive Heat Warnings in 2012
Excessive Heat Warning 2, NWS Los Angeles, CA
NWS Los Angeles, CA issued this excessive heat warning at Aug 9, 2012, 2:57 AM PDT for Los Angeles County, California. It took effect at Aug 9, 2012, 11:00 AM PDT. It was in force for 33 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2012, 2:57 AM PDT (09:57 UTC)
- In effect from
- Aug 9, 2012, 11:00 AM PDT
- Expired
- Aug 10, 2012, 8:00 PM PDT
- In force
- 33 hr
- Issued by
- NWS Los Angeles, CA
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 09:57 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Edwards AFB, CA (KEDW), launched 00:00Z, 10.0 hours before the alert went out and 89 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 611 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 3402 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
373 WWUS76 KLOX 090957 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 257 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING IN EFFECT THIS AFTERNOON THROUGH FRIDAY EARLY EVENING FOR PORTIONS OF THE MOUNTAINS AND VALLEYS OF SOUTHWESTERN CALIFORNIA... .HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE AREA THIS WEEK...WITH THE WARMEST DAYS NOW EXPECTED TO BE TODAY AND FRIDAY IN MOST AREAS. HEAT INDEX VALUES...WHICH TAKE INTO ACCOUNT THE AIR TEMPERATURE AND HUMIDITY...ARE EXPECTED TO REACH OR EXCEED 105 DEGREES IN MANY VALLEY LOCATIONS IN LOS ANGELES AND VENTURA COUNTIES TODAY AND FRIDAY AND OVER 100 DEGREES IN THE LOWER MOUNTAIN ELEVATIONS...MOSTLY BELOW 4000 FEET. CAZ052>054-091800- /O.UPG.KLOX.EH.A.0002.120810T1900Z-120811T0300Z/ /O.NEW.KLOX.EH.W.0002.120809T1800Z-120811T0300Z/ SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG 257 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED AN EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT FRIDAY. THE EXCESSIVE HEAT WATCH IS NO LONGER IN EFFECT. * HEAT INDEX VALUES...BETWEEN 100 AND 105 AT LOWER ELEVATIONS BELOW 4000 FEET. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES IN LOWER MOUNTAIN ELEVATIONS. * TIMING...FROM 11AM PDT TODAY THROUGH 8 PM PDT SATURDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN...THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN...TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ044-088-547-548-091800- /O.UPG.KLOX.EH.A.0002.120810T1900Z-120811T0300Z/ /O.NEW.KLOX.EH.W.0002.120809T1800Z-120811T0300Z/ VENTURA COUNTY INTERIOR VALLEYS-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY...PASADENA...SAN GABRIEL... POMONA 257 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED AN EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT FRIDAY. THE EXCESSIVE HEAT WATCH IS NO LONGER IN EFFECT. * HEAT INDEX VALUES...BETWEEN 103 AND 108. THE HIGHEST VALUES WILL BE IN THE WESTERN SAN FERNANDO VALLEY...SAN GABRIEL VALLEY FOOTHILLS...EASTERN SANTA CLARITA VALLEY AND IN THE OJAI VALLEY. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * TIMING...FROM 11AM PDT TODAY THROUGH 8 PM PDT SATURDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN...THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN...TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ046-091800- /O.UPG.KLOX.EH.A.0002.120810T1900Z-120811T0300Z/ /O.NEW.KLOX.EH.W.0002.120809T1800Z-120811T0300Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 257 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED AN EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT FRIDAY. THE EXCESSIVE HEAT WATCH IS NO LONGER IN EFFECT. * HEAT INDEX VALUES...BETWEEN 100 AND 105 FRIDAY AFTERNOON AND EVENING...MAINLY OVER THE INTERIOR SLOPES. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * TIMING...FROM 11AM PDT TODAY THROUGH 8 PM PDT SATURDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN...THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN...TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ KAPLAN/HALL
5 follow-up statements
070 WWUS76 KLOX 091733 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1033 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING IN EFFECT THIS AFTERNOON THROUGH FRIDAY EARLY EVENING FOR PORTIONS OF THE MOUNTAINS AND VALLEYS OF SOUTHWESTERN CALIFORNIA... .HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE AREA THIS WEEK... WITH THE WARMEST DAYS NOW EXPECTED TO BE TODAY AND FRIDAY IN MOST AREAS. HEAT INDEX VALUES...WHICH TAKE INTO ACCOUNT THE AIR TEMPERATURE AND HUMIDITY...ARE EXPECTED TO REACH OR EXCEED 105 DEGREES IN MANY VALLEY LOCATIONS IN LOS ANGELES AND VENTURA COUNTIES TODAY AND FRIDAY AND OVER 100 DEGREES IN THE LOWER MOUNTAIN ELEVATIONS...MOSTLY BELOW 4000 FEET. CAZ052>054-100145- /O.CON.KLOX.EH.W.0002.120809T1800Z-120811T0300Z/ SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG 1033 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * HEAT INDEX VALUES...BETWEEN 100 AND 105 AT LOWER ELEVATIONS BELOW 4000 FEET. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES IN LOWER MOUNTAIN ELEVATIONS. * TIMING...FROM 11AM PDT TODAY THROUGH 8 PM PDT SATURDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ044-088-547-548-100145- /O.CON.KLOX.EH.W.0002.120809T1800Z-120811T0300Z/ VENTURA COUNTY INTERIOR VALLEYS-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY...PASADENA...SAN GABRIEL... POMONA 1033 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * HEAT INDEX VALUES...BETWEEN 103 AND 108. THE HIGHEST VALUES WILL BE IN THE WESTERN SAN FERNANDO VALLEY...SAN GABRIEL VALLEY FOOTHILLS...EASTERN SANTA CLARITA VALLEY AND IN THE OJAI VALLEY. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * TIMING...FROM 11AM PDT TODAY THROUGH 8 PM PDT SATURDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ046-100145- /O.CON.KLOX.EH.W.0002.120809T1800Z-120811T0300Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 1033 AM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * HEAT INDEX VALUES...BETWEEN 100 AND 105...MAINLY OVER THE INTERIOR SLOPES. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * TIMING...FROM 11AM PDT TODAY THROUGH 8 PM PDT SATURDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$
269 WWUS76 KLOX 100137 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 637 PM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING IN EFFECT THROUGH EARLY FRIDAY EVENING FOR PORTIONS OF THE MOUNTAINS AND VALLEYS OF SOUTHWESTERN CALIFORNIA... .HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE AREA...WITH ANOTHER VERY HOT DAY EXPECTED TO OCCUR FRIDAY IN MOST AREAS. HEAT INDEX VALUES...WHICH TAKE INTO ACCOUNT THE AIR TEMPERATURE AND HUMIDITY...ARE EXPECTED TO REACH OR EXCEED 105 DEGREES AGAIN IN MANY VALLEY LOCATIONS IN LOS ANGELES AND VENTURA COUNTIES FRIDAY AND OVER 100 DEGREES IN THE LOWER MOUNTAIN ELEVATIONS...MOSTLY BELOW 4000 FEET. CAZ052>054-101300- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG 637 PM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * HEAT INDEX VALUES...BETWEEN 100 AND 105 AT LOWER ELEVATIONS BELOW 4000 FEET. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES IN LOWER MOUNTAIN ELEVATIONS. * TIMING...FROM 11 AM PDT THROUGH 8 PM PDT FRIDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ044-088-547-548-101300- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ VENTURA COUNTY INTERIOR VALLEYS-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY...PASADENA...SAN GABRIEL... POMONA 637 PM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * HEAT INDEX VALUES...BETWEEN 103 AND 108. THE HIGHEST VALUES WILL BE IN THE WESTERN SAN FERNANDO VALLEY...SAN GABRIEL VALLEY FOOTHILLS...EASTERN SANTA CLARITA VALLEY AND IN THE OJAI VALLEY. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * TIMING...FROM 11 AM PDT THROUGH 8 PM PDT FRIDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ046-101300- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 637 PM PDT THU AUG 9 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * HEAT INDEX VALUES...BETWEEN 100 AND 105...MAINLY OVER THE INTERIOR SLOPES. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * TIMING...FROM 11 AM PDT THROUGH 8 PM PDT FRIDAY. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ MW/SIRARD
782 WWUS76 KLOX 101030 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 330 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING IN EFFECT THROUGH EARLY THIS EVENING FOR PORTIONS OF THE MOUNTAINS AND VALLEYS OF SOUTHWESTERN CALIFORNIA... .A HOT AIR MASS WILL REMAIN IN PLACE OVER THE AREA DUE TO HIGH PRESSURE OVER THE REGION. ANOTHER VERY HOT DAY WILL OCCUR TODAY IN MOST AREAS. HEAT INDEX VALUES...WHICH TAKE INTO ACCOUNT THE AIR TEMPERATURE AND HUMIDITY...ARE EXPECTED TO REACH OR EXCEED 105 DEGREES AGAIN IN MANY VALLEY LOCATIONS IN LOS ANGELES AND VENTURA COUNTIES TODAY AND OVER 100 DEGREES IN THE LOWER MOUNTAIN ELEVATIONS...MOSTLY BELOW 4000 FEET. CAZ052>054-101900- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG 330 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * HEAT INDEX VALUES...BETWEEN 100 AND 105 AT LOWER ELEVATIONS BELOW 4000 FEET. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES IN LOWER MOUNTAIN ELEVATIONS. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ044-088-547-548-101900- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ VENTURA COUNTY INTERIOR VALLEYS-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY...PASADENA...SAN GABRIEL... POMONA 330 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * HEAT INDEX VALUES...BETWEEN 103 AND 108. THE HIGHEST VALUES WILL OCCUR IN THE WESTERN SAN FERNANDO VALLEY...SAN GABRIEL VALLEY FOOTHILLS...EASTERN SANTA CLARITA VALLEY AND IN THE OJAI VALLEY. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ046-101900- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 330 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * HEAT INDEX VALUES...BETWEEN 100 AND 105...MAINLY OVER THE INTERIOR SLOPES. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ HALL
122 WWUS76 KLOX 101832 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1132 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING IN EFFECT THROUGH EARLY THIS EVENING FOR PORTIONS OF THE MOUNTAINS AND VALLEYS OF SOUTHWESTERN CALIFORNIA... .A HOT AIR MASS WILL REMAIN IN PLACE OVER THE AREA DUE TO HIGH PRESSURE OVER THE REGION. ANOTHER VERY HOT DAY WILL OCCUR TODAY IN MOST AREAS. HEAT INDEX VALUES...WHICH TAKE INTO ACCOUNT THE AIR TEMPERATURE AND HUMIDITY...ARE EXPECTED TO REACH OR EXCEED 105 DEGREES AGAIN IN MANY VALLEY LOCATIONS IN LOS ANGELES AND VENTURA COUNTIES TODAY AND OVER 100 DEGREES IN THE LOWER MOUNTAIN ELEVATIONS...MOSTLY BELOW 4000 FEET. CAZ052>054-110245- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG 1132 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * HEAT INDEX VALUES...BETWEEN 100 AND 105 AT LOWER ELEVATIONS BELOW 4000 FEET. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES IN LOWER MOUNTAIN ELEVATIONS. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ044-088-547-548-110245- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ VENTURA COUNTY INTERIOR VALLEYS-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY...PASADENA...SAN GABRIEL... POMONA 1132 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * HEAT INDEX VALUES...BETWEEN 103 AND 108. THE HIGHEST VALUES WILL OCCUR IN THE WESTERN SAN FERNANDO VALLEY...SAN GABRIEL VALLEY FOOTHILLS...EASTERN SANTA CLARITA VALLEY AND IN THE OJAI VALLEY. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$ CAZ046-110245- /O.CON.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 1132 AM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * HEAT INDEX VALUES...BETWEEN 100 AND 105...MAINLY OVER THE INTERIOR SLOPES. LOW TEMPERATURES WILL BE BETWEEN 70 AND 80 DEGREES. * IMPACTS...THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES IS EXPECTED. DRINK PLENTY OF FLUIDS...STAY IN AN AIR- CONDITIONED ROOM AS MUCH AS POSSIBLE...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. NEVER EVER LEAVE CHILDREN... THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES...EVEN FOR A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN... TEMPERATURES CAN QUICKLY RISE TO LIFE-THREATENING LEVELS TO REDUCE RISK DURING OUTDOOR WORK THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 911. && $$
376 WWUS76 KLOX 110243 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 743 PM PDT FRI AUG 10 2012 CAZ052>054-110345- /O.EXP.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- INCLUDING THE CITIES OF...SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA... LOCKWOOD VALLEY...MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG 743 PM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... TEMPERATURES HAVE LARGELY FALLEN BELOW EXCESSIVE HEAT WARNING THRESHOLDS THIS EVENING. AS A RESULT...THE EXCESSIVE HEAT WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM PDT. TEMPERATURES WILL BE SLIGHTLY COOLER SATURDAY AND SUNDAY...BUT HIGHS IN THE LOW 100S WILL PERSIST IN THE WARMEST AREAS UP TO 4000 FEET. $$ CAZ044-088-547-548-110345- /O.EXP.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ VENTURA COUNTY INTERIOR VALLEYS-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- INCLUDING THE CITIES OF...SANTA PAULA...FILLMORE...OJAI...PIRU... SANTA CLARITA...NEWHALL...VALENCIA...WOODLAND HILLS... NORTHRIDGE...BURBANK...UNIVERSAL CITY...PASADENA...SAN GABRIEL... POMONA 743 PM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... TEMPERATURES HAVE LARGELY FALLEN BELOW EXCESSIVE HEAT WARNING THRESHOLDS THIS EVENING. AS A RESULT...THE EXCESSIVE HEAT WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM PDT. TEMPERATURES WILL BE SLIGHTLY COOLER SATURDAY AND SUNDAY...BUT HIGHS IN THE LOW 100S WILL PERSIST IN THE WARMEST AREAS. $$ CAZ046-110345- /O.EXP.KLOX.EH.W.0002.000000T0000Z-120811T0300Z/ SANTA MONICA MOUNTAINS RECREATIONAL AREA- INCLUDING THE CITY OF...TOPANGA 743 PM PDT FRI AUG 10 2012 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... TEMPERATURES HAVE LARGELY FALLEN BELOW EXCESSIVE HEAT WARNING THRESHOLDS THIS EVENING. AS A RESULT...THE EXCESSIVE HEAT WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM PDT. TEMPERATURES WILL BE SLIGHTLY COOLER SATURDAY AND SUNDAY...BUT HIGHS IN THE MID 90S TO NEAR 100 WILL PERSIST IN THE WARMEST AREAS. $$ SIRARD
What forecasters said that day
The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Los Angeles, CA wrote its last area forecast discussion before this excessive heat warning went out at Aug 8, 11:02 PM PDT, 3 hours 55 minutes earlier.
Area forecast discussion, Aug 8, 11:02 PM PDT, 3 hours 55 minutes before
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1102 PM PDT WED AUG 8 2012 UPDATED AVIATION SECTION .SYNOPSIS... HIGH PRESSURE WILL DOMINATE THE WEATHER THIS WEEK...PRODUCING WELL ABOVE NORMAL TEMPERATURES ACROSS SOUTHERN CALIFORNIA. MONSOON MOISTURE MAY INCREASE BY LATE WEEK...RESULTING IN THE POSSIBILITY OF ISOLATED THUNDERSTORMS OVER THE LOS ANGELES COUNTY MOUNTAINS AND ANTELOPE VALLEY THIS WEEKEND. && .SHORT TERM (TONIGHT-SAT)...VERY HOT AWAY FROM THE COAST TODAY. THE HIGHEST OFFICIAL TEMP WAS 108 DEG AT CHATSWORTH AND SAUGUS...WHILE UNOFFICIAL HIGH OF 110 WAS REACHED AT SADDLEBACK BUTTE IN THE ANTELOPE VALLEY. ONE RECORD HIGH OCCURRED WHICH WAS 107 DEG AT WOODLAND HILLS/PIERCE COLLEGE. LATEST ACARS SOUNDINGS FROM LAX SHOWING A VERY STRONG MARINE INVERSION WITH A DEPTH OF ABOUT 1000 FT. BASE OF INVERSION TEMP OF 65 DEG...INCREASING TO 91 DEG AT 2300 FT. TEMP REMAINED 80 OR ABOVE ALL THE WAY UP TO 5800 FT. THIS LOW AND STRONG INVERSION WILL MEAN VERY WARM TEMPS IN THE FOOTHILLS AND LOWER MTN ELEVATIONS OVERNIGHT. GENERALLY CLEAR SKIES COVERED THE FORECAST AREA THIS EVENING. ANY LOW CLOUDS TONIGHT WILL BE CONFINED TO THE IMMEDIATE CENTRAL COAST. OTHERWISE MOSTLY CLEAR SKIES CAN BE EXPECTED ACROSS THE REGION OVERNIGHT. SOME LINGERING GUSTY W TO SW WINDS IN THE ANTELOPE VALLEY WILL DIMINISH OVERNIGHT. SOUTHERN AND CENTRAL CA WILL CONTINUE TO BE ON THE WRN PERIPHERY OF A LARGE UPPER LEVEL HIGH CENTERED NEAR THE FOUR CORNERS TONIGHT THROUGH SAT. A BROAD MOSTLY SE FLOW ALOFT INTO SRN CA WILL BRING IN SOME MONSOONAL MOISTURE AT MID LEVELS MAINLY ABOVE 700 MB DURING THE PERIOD. MUCH OF THE INSTABILITY AND MOISTURE WILL REMAIN E AND SE OF THE FORECAST AREA. EVEN SO...THE POSSIBILITY OF CONVECTION FOR THE L.A./VTU MTNS AND ANTELOPE VALLEY IS PROBABLY AROUND 10 TO 13 PERCENT THU...THEN INCREASES TO SLIGHT CHANCE (15-20 PERCENT) ON FRI AND SAT. OTHERWISE...DRY WEATHER WILL PREVAIL ACROSS THE REGION THROUGH SAT. THERE MAY BE SOME LOW CLOUDS AND FOG ALONG THE CENTRAL COAST NIGHT AND MORNING HOURS...OTHERWISE MOSTLY CLEAR SKIES WILL PREVAIL OVER THE FORECAST AREA...EXCEPT FOR AFTERNOON CLOUDS OVER THE L.A./VTU MTNS AND ANTELOPE VALLEY. THE BIGGER CONCERN IS THE AMOUNT OF HEAT THAT WILL AFFECT AREAS AWAY FROM THE COAST. IT LOOKS LIKE NEAR RECORD HEAT WILL BE POSSIBLE IN SOME AREAS...BUT HUMIDITY LEVELS SHOULD REMAIN LOW ENOUGH TO PRECLUDE HEAT INDICES FROM REACHING OR EXCEEDING HEAT WARNING THRESHOLDS EXCEPT IN A FEW SPOTS ON THU. THESE THRESHOLDS MAY BE REACHED FOR MORE AREAS ON FRI...AND AN EXCESSIVE HEAT WATCH IS IN EFFECT FOR MOST OF VTU/L.A. COUNTIES AND THE SBA COUNTY MTNS FOR FRI AFTERNOON AND EARLY EVENING. EVEN WITHOUT AN EXCESSIVE HEAT WATCH OR WARNING...TEMPERATURES WILL BE VERY HOT EACH AFTERNOON AWAY FROM THE IMMEDIATE COAST...AND PEOPLE STILL NEED TO EXERCISE HEAT RELATED SAFETY MEASURES DURING THIS EXTENDED HEAT EPISODE. PLEASE SEE THE LATEST SPECIAL WEATHER STATEMENT (LAXSPSLOX) FOR FURTHER DETAILS ON THE HOT WEATHER. ***FROM PREVIOUS DISCUSSION*** .LONG TERM (SUN-WED)...COOLING TREND TO CONTINUE SUNDAY THROUGH THE MIDDLE OF NEXT WEEK BUT STILL PLENTY OF TRIPLE DIGIT TEMPERATURES AT LEAST ON SUNDAY. HIGH PRESSURE WEAKENS MONDAY-WEDNESDAY AS A WEAK TROF DEVELOPS ALONG THE WEST COAST. MOST AREAS SHOULD BE BACK TO NORMAL TEMPERATURES BY MONDAY OR TUESDAY. && .AVIATION...09/0602Z. VFR CONDITIONS ARE EXPECTED AT ALL INLAND TERMINALS. THERE IS A CHANCE OF VLIFR TO LIFR CONDITIONS AT COASTAL TERMINALS BETWEEN 09Z AND 16Z...WITH THE HIGHEST CONFIDENCE OF ANY VLIFR TO LIFR CONDITIONS AT KSMX. KLAX...VFR CONDITIONS ARE EXPECTED THROUGHOUT THE PERIOD. THERE IS A 20 PERCENT CHANCE OF VLIFR TO LIFR CONDITIONS BETWEEN 12Z AND 15Z. KBUR...VFR CONDITIONS ARE EXPECTED THROUGHOUT THE PERIOD WITH NO WIND ISSUES. && .LOX WATCHES/WARNINGS/ADVISORIES... EXCESSIVE HEAT WATCH (SEE LAXNPWLOX). SMALL CRAFT ADVISORY (SEE LAXMWWLOX). SPECIAL WEATHER STATEMENT (SEE LAXSPSLOX). && PUBLIC...SIRARD/MW AVIATION...HALL SYNOPSIS...RAT WWW.WEATHER.GOV/LOSANGELES
Hazardous weather outlook, Aug 8, 6:00 AM PDT, 20 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 600 AM PDT WED AUG 8 2012 CAZ034>041-044>046-051>054-059-087-088-547-548-091300- SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY- SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST- LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES- VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA- SAN LUIS OBISPO COUNTY MOUNTAINS- SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- ANTELOPE VALLEY-CATALINA ISLAND-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- 600 AM PDT WED AUG 8 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY AND TONIGHT HIGH RIP CURRENT RISKS WILL CREATE HAZARDS FOR SWIMMERS IN THE SURF ZONE. WELL ABOVE NORMAL HEAT WILL CREATE HAZARDS FOR PEOPLE WORKING OR PLAYING OUTDOORS AS WELL AS PEOPLE INDOORS WITHOUT AIR CONDITIONING. * HIGH RIP CURRENT RISK......SEE FZUS56 KLOX - SRFLOX FOR DETAILS * .DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY BOTH HIGH AND LOW TEMPERATURES WILL BE SIGNIFICANTLY ABOVE NORMAL AWAY FROM THE COASTS THURSDAY THROUGH SUNDAY. THERE IS A SLIGHT CHANCE OF MOUNTAIN THUNDERSTORMS OVER EASTERN LOS ANGELES COUNTY ON FRIDAY AND THE WEEKEND. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. RORKE
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 2:47 PM PDT | Areal Flood Advisory | LOX | Los Angeles | 71 min |
Nearby
Excessive Heat Warnings in California, 2012Every excessive heat warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.