Day 3-8 Fire Weather Forecast Issued on Nov 23, 2021

Updated: Tue Nov 23 22:02:03 UTC 2021

Day 3-8 Fire Weather Forecast Graphic Issued on Nov 23, 2021
 
Day 3 Probabilistic Dry Thunder/Strong Wind FireWX Forecast Graphic Issued on Nov 23, 2021

Day 3 Probabilistic Fire Weather Outlooks:
Probability of dry thunderstorms with dry fuels within 12 miles of a point denoted by scalloped lines for
- Critical Area - 40% (blue)
- Marginal Area - 10% (brown)
Probability of strong winds, low RH, and warm temperatures concurrent for at least 3 hours with dry fuels within 12 miles of a point denoted by solid lines for
- Critical Area - 70% (red)
- Marginal Area - 40% (orange)


Day 4 Probabilistic Dry Thunder/Strong Wind FireWX Forecast Graphic Issued on Nov 23, 2021

Day 4 Probabilistic Fire Weather Outlooks:
Probability of dry thunderstorms with dry fuels within 12 miles of a point denoted by scalloped lines for
- Critical Area - 40% (blue)
- Marginal Area - 10% (brown)
Probability of strong winds, low RH, and warm temperatures concurrent for at least 3 hours with dry fuels within 12 miles of a point denoted by solid lines for
- Critical Area - 70% (red)
- Marginal Area - 40% (orange)


Day 5 Probabilistic Dry Thunder/Strong Wind FireWX Forecast Graphic Issued on Nov 23, 2021

Day 5 Probabilistic Fire Weather Outlooks:
Probability of dry thunderstorms with dry fuels within 12 miles of a point denoted by scalloped lines for
- Critical Area - 40% (blue)
- Marginal Area - 10% (brown)
Probability of strong winds, low RH, and warm temperatures concurrent for at least 3 hours with dry fuels within 12 miles of a point denoted by solid lines for
- Critical Area - 70% (red)
- Marginal Area - 40% (orange)


Day 6 Probabilistic Dry Thunder/Strong Wind FireWX Forecast Graphic Issued on Nov 23, 2021

Day 6 Probabilistic Fire Weather Outlooks:
Probability of dry thunderstorms with dry fuels within 12 miles of a point denoted by scalloped lines for
- Critical Area - 40% (blue)
- Marginal Area - 10% (brown)
Probability of strong winds, low RH, and warm temperatures concurrent for at least 3 hours with dry fuels within 12 miles of a point denoted by solid lines for
- Critical Area - 70% (red)
- Marginal Area - 40% (orange)


Day 7 Probabilistic Dry Thunder/Strong Wind FireWX Forecast Graphic Issued on Nov 23, 2021

Day 7 Probabilistic Fire Weather Outlooks:
Probability of dry thunderstorms with dry fuels within 12 miles of a point denoted by scalloped lines for
- Critical Area - 40% (blue)
- Marginal Area - 10% (brown)
Probability of strong winds, low RH, and warm temperatures concurrent for at least 3 hours with dry fuels within 12 miles of a point denoted by solid lines for
- Critical Area - 70% (red)
- Marginal Area - 40% (orange)


Day 8 Probabilistic Dry Thunder/Strong Wind FireWX Forecast Graphic Issued on Nov 23, 2021

Day 8 Probabilistic Fire Weather Outlooks:
Probability of dry thunderstorms with dry fuels within 12 miles of a point denoted by scalloped lines for
- Critical Area - 40% (blue)
- Marginal Area - 10% (brown)
Probability of strong winds, low RH, and warm temperatures concurrent for at least 3 hours with dry fuels within 12 miles of a point denoted by solid lines for
- Critical Area - 70% (red)
- Marginal Area - 40% (orange)


Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
D3 5,822 2,925,564 Riverside, CA...San Bernardino, CA...Ontario, CA...Fontana, CA...Santa Clarita, CA...
D3Thu, Nov 25, 2021 - Fri, Nov 26, 2021 D6Sun, Nov 28, 2021 - Mon, Nov 29, 2021
D4Fri, Nov 26, 2021 - Sat, Nov 27, 2021 D7Mon, Nov 29, 2021 - Tue, Nov 30, 2021
D5Sat, Nov 27, 2021 - Sun, Nov 28, 2021 D8Tue, Nov 30, 2021 - Wed, Dec 01, 2021
(All days are valid from 12 UTC - 12 UTC)
   ZCZC SPCFWDD38 ALL
   FNUS28 KWNS 232158

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0358 PM CST Tue Nov 23 2021

   Valid 251200Z - 011200Z

   An upper trough will move eastward across the central and eastern
   CONUS through the period, with a belt of enhanced northwesterly
   midlevel flow becoming established across the Great Plains. At the
   same time, a midlevel cut-off low will develop over the Southwest
   and meander over the Baja Peninsula through around Day 4/Friday,
   resulting in deep northeasterly offshore flow over southern
   California. By Day 6/Sunday, an upper ridge will build over much of
   the West and persist through the remainder of the period.  

   ...Days 3-4/Thursday-Friday - Southern California...
   Deep northeasterly offshore flow will persist from Day 3/Thursday
   through Day 4/Friday, with poor RH recoveries expected overnight.
   The best overlap of 20+ mph surface winds and 15% RH is expected on
   Thursday, hence the introduction of 70% Critical probabilities.
   Winds will gradually subside on Friday, with critically low RH
   remaining in place through the morning, with 40% probabilities
   introduced.  

   ...Days 3-5/Thursday-Saturday - Central and Southern High Plains...
   Enhanced northwesterly midlevel flow will support periods of locally
   dry and breezy conditions each afternoon, though confidence in
   timing/coverage of these conditions remains too low to include any
   Critical probabilities at this time.

   ..Weinman/Squitieri.. 11/23/2021

   ...Please see www.spc.noaa.gov/fire for graphic product...

   $$

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