Major fires breaking out in Southern California


Explosive fires breaking out in Southern California right now. It’s usually the wet season by December but no rain in sight this week. Santa Ana winds instead are spreading violent wildfires which have destroyed dozens of structures and threatening thousands more. One person has died thus far. No relief expected this week as strong high pressure builds over the Western US (coinciding with the deep trough over the East).


Speaking of which, the weather has finally turned colder after very abnormally warm temps on the Plains. Traveling with my fiancé and son today to Minnesota from Nebraska to look for a new place to live. We are moving to St. Cloud January 1st so we can be closer to my family in nearby Minneapolis and I will start a second masters at St. Cloud State. Highs in Eastern Nebraska will be largely near normal today (near 40) before turning colder the rest of the work week. Central MN will see similar departures below normal…after much of the region had huge departures above normal (over 20 degrees in many cases) for days. A general pattern seen for much of the country in the month of November.

—Meteorologist Nick Humphrey

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First Game of World Series Tonight…Weather Headline: HOT

The World Series begins tonight in Los Angeles between the LA Dodgers and the Houston Astros. And it begins with record heat in Southern California. Today, in fact, downtown LA is setting a record high for the day and it is the warmest temperature on record for so late in the year. This was after a record high of 102 was set for downtown LA yesterday. So far it has reached 103 downtown and the official high may be higher before the day is done.

First pitch for the World Series is at 5 pm PDT this evening. While temperatures will decrease somewhat by that time, game time temperatures will be in record territory for a World Series Game (95-100 degrees F). The hottest World Series first pitch on record was from a game (cannot remember which) in 2001 in Phoenix when the NY Yankees played on the road against the Arizona Diamondbacks in a starting game temperature of 94 degrees.

In addition to heat, fire danger remains VERY high across Southern California as Santa Ana winds intensified today and will continue into tomorrow. RED FLAG WARNINGS are in effect for parts of SoCal. Gusts of 50-60 mph have caused problems for firefighters as they dealt with brush fires in Granada Hills this morning and Rancho Cucamonga this afternoon (LA Times). 

(Map of Rancho CucamongaMap of Granada Hills)

Game 2 of the World Series (First Pitch at 5 pm PDT Wed) should be slightly “cooler”, but still quite hot…expecting temperatures to start the game in the mid-90s (92-97 degrees F). If you’re going to these games or doing any outdoor activity at all in Southern California…lots of water and be careful with anything that sparks or burns!

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US Global Forecast System forecast temperatures at 5 pm PDT Tuesday.

Enjoy the game! Go American League and go Astros!

–Meteorologist Nick Humphrey

Post-Tropical Cyclone Ophelia advancing on Ireland

Post-Tropical Cyclone Ophelia is quickly approaching Ireland with hurricane-force strength. It’s a fully non-tropical frontal system, but powerful one. Gusts of 45-55 mph are already occurring over the south coast of the country. My forecast for Ireland is HERE at the bottom, no significant changes since 24 hrs ago. Lots of wind and of course high surf. Stay safe if you’re located in Ireland or Scotland.

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The size of the Houston Urban Sprawl puts the Flood Disaster in Context

I had no idea Houston was so massive. This (plus the suburbs which aren’t shown here) puts the urban flooding disaster and the potential costs and ongoing risk to life in even greater context. Very sad situation for America’s 4th largest city by population.

Comparison of Houston city limits with that of other major large cities. Map courtesy of @RedTRaccoon on Twitter.

Meanwhile in Houston…

Northern Plains becoming hard hit by severe to extreme drought

The Northern US Great Plains into the southern Canadian Prairies are suffering from a growing drought problem. The National Drought Mitigation Center at the University of Nebraska-Lincoln released their weekly drought monitor which updates on the drought situation for the entire country (every Thursday based on Tuesday data). Drought overall across the United States has begun to grow in coverage and intensity. This can happen just from the local abnormalities in a summer season. However, a persistent pattern of dryness has developed over the Northern Plains beginning in May where significantly below normal rainfall has caused soils and hydrologic sources to begin to dry out.

I took a look at some meteorological stations for their recent climate records. Rapid City, SD (currently in the moderate drought zone) is running 3.37 inches below normal in rainfall for the May 1st-July 21st period. In Bismarck, ND (in severe drought) is even worse at 4.01 inches below normal for the same period. May dryness hit the region hard with a major monthly deficit then it simply continued into the summer. At least moderate drought covers ~28% of the above region (ND, SD, NE, KS, WY, CO). Moderate conditions can result in some damage to crops and reduction in stream/river flows and lowering of lake levels. Extreme – which now exists in spots of southwest ND – can mean widespread and devastating agricultural losses and severe reductions in hydrologic sources.

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Above average temperatures likely over the Great Plains (and rest of the country) over the next 3 months. (Climate Prediction Center)
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Meanwhile, there are equal chances (~33% each) for above, near, or below normal precipitation during the same 3 month period. (Climate Prediction Center).

Obviously, “equal chances”- which is based on the expected evolution of various climate patterns – means that there could very well be above average rainfall, which the region really needs at this point to get out of the growing deficit. However, if it ends up being near-normal, they may continue to simply lag behind with similarly bad impacts. Below normal means a worsening and spreading of drought conditions and further difficulty removing the existing drought (anyone remember the difficulty California had in getting out of drought?). Folks in these areas should be prepared for any further water restrictions and do what they can now to conserve in case the dryness lasts longer than expected.

Elsewhere, dryness and moderate drought has begun to spread into parts of the Intermountain West and Four Corners.


Quick update from the Eastern Pacific tropics…new tropical depression! Tropical Depression Ten-E is rolling around between Tropical Storm Greg and TD Nine-E. It’s expected to become a tropical storm in the coming days as it generally moves westward over the open ocean. So there are now 4 existing cyclones in the tropical North Pacific east of 180 longitude. Although Fernanda is dying quickly over cooler waters and dry mid-level air and will likely dissipate by tomorrow.

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Good weekend to you all!