Gusty winds in the mountains and valleys expected to increase fi - The CW San Diego - News 8

Warnings

fire weather
San Diego County Inland Valleys, CA

CAZ250-258-200500-
/O.CON.KSGX.FW.W.0004.000000T0000Z-181020T0500Z/
San Diego County Inland Valleys-San Diego County Mountains-
Including The Palomar And Descanso Ranger Districts of the
Cleveland National Forest-
134 PM PDT Fri Oct 19 2018

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE COASTAL
SLOPES OF THE MOUNTAINS INTO THE VALLEYS...

* WIND...Northeast to east 15 to 25 mph with gusts to 45 mph.
Isolated gusts to 55 mph near the mountain ridge tops.

* HUMIDITY...Lowest daytime humidity of around 15 to 20 percent.

* IMPACTS...Any fires that develop will likely spread more
rapidly. Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

Santa Ana Mountains-Including The Trabuco Ranger District of the Cleveland National Forest, CA

CAZ248-255>257-265-552-554-200500-
/O.CON.KSGX.FW.W.0004.000000T0000Z-181020T0500Z/
San Bernardino and Riverside County Valleys - The Inland Empire-
San Bernardino County Mountains-
Including The Mountain Top And Front Country Ranger Districts Of
The San Bernardino National Forest-Riverside County Mountains-
Including The San Jacinto Ranger District Of The San Bernardino
National Forest-Santa Ana Mountains-
Including The Trabuco Ranger District of the Cleveland National
Forest-San Gorgonio Pass Near Banning-Orange County Coastal Areas-
Orange County Inland Areas-
134 PM PDT Fri Oct 19 2018

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING
FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE COASTAL MOUNTAIN
SLOPES...VALLEYS...AND ORANGE COUNTY...

* WIND...Northeast to east 15 to 30 mph with gusts 45 to 50 mph.

* HUMIDITY...Lowest daytime humidity of around 15 percent.

* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

Gusty winds in the mountains and valleys expected to increase fire danger

Weather Update: Friday, October 19, 2018 (6:00 a.m.)

Warm and dry conditions are expected to last through Saturday. Gusty northeast winds in the mountains and valleys are expected to increase the risk of fire danger in the region.

A Detailed Look at October 19th:

  • Moderate rip current risk. Water temperature 64-67. Surf 3-5 ft. Southwest swell continues. UV index for San Diego is moderate. 
  • High temperatures Thursday warm, above normal. Coastal highs 76-81, normal around 73. Inland highs 80-86, normal around 81. Mountain highs 67-75, normal around 70. Desert highs 82-85, normal around 90.
  • Friday humidity remains fairly dry. Early morning dew points throughout the county do not exceed 40 degrees further from the coast. Weaker offshore winds will allow for moist marine air to move onshore. 
  • Clear skies are expected throughout the day Friday. Based on Thursday night observations, atmosphere at around 8000 ft is seeing an increase in humidity with relative humidity levels around 50%, while most of the atmosphere is still below 30%.

The Week Ahead:

  • An upper level low will linger around the Southwestern U.S. through the end of the week. The low will move further north, into Utah as it weakens Friday, weakening offshore flow.
  • High pressure will be the dominating factor of the weather pattern through the week. The aforementioned low being cut-off and blocked the high. The high will slowly move eastward from the Pacific coast, helping temperature raise in the western region.
  • Low pressure forming over the Pacific will bring an increase in moisture to Southern California over the weekend. Temperatures will begin to cool from this system during the latter part of the weekend. This system is not expected to bring much rain to San Diego at this time. The bulk of the rain will be to the north and northeast.
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