NOAA Updates the Status of ENSO February 10, 2022

February 11, 2022Posted inweatherNo Comments

On the second Thursday of every month, NOAA issues its analysis of the status of ENSO. This includes determining the Alert System Status. Although the current status remains the same i.e.  La Nina Advisory, the forecast has been adjusted somewhat from last month. The forecast calls for the La Nina to continue to fade.  The timing is shown in the NOAA discussion and the IRI probability analysis. The Australian Meteorological Service thinks this will happen sooner and I agree. I present some information that suggests that NOAA has the timing wrong and that the transition to ENSO Neutral will occur fairly soon.

The impact of the NOAA forecast for the transition from La Nina to ENSO Neutral will show up next Thursday when NOAA issues its Seasonal Outlook. The NOAA ENSO Status Update provides an advance indication of how the forecast might change. To repeat, I expect the demise of La Nina to occur somewhat sooner than predicted by NOAA.  It is not a significant difference. There is a lag between the ENSO state and the impact on U.S. weather.  Thus the exact date when a fading La Nina meets the criteria for ENSO Neutral may not be very important in terms of the actual impact on Spring and Summer weather including the North American Monsoon (NAM). We will learn what NOAA thinks next Thursday.

NOAA Updates Their February 2022 Outlook

February 1, 2022Posted inweatherNo Comments

At the end of every month, NOAA updates their Early Outlook for the following month which in this case is February. They also issue a drought outlook for the following month. We are reporting on that tonight as well as some interesting information on the change in Western streamflow median levels in the new climatology versus the prior climatology. This tells us how the past three decades have changed from the prior three decades. It is in line with what should be expected and is very interesting. It suggests that on average the West is drying out but I think I also see a secondary trend where it may be getting drier to the south and wetter to the north.

JAMSTEC Seasonal Outlook for Spring and Summer of 2022

January 27, 2022Posted inweatherNo Comments

I should have reported this a couple of weeks ago after NOAA issued their Seasonal Outlook.  JAMSTEC is a well respected Japanese Research Agency for Marine-Earth Science and Technology. They have a proprietary forecast model and every month they normally issue a three-season forecast. This month they only looked out two seasons.  I think it is useful to look at more than one forecast as it provides to some extent an assessment of the variability one might expect in the observed weather compared to the forecasts. This is usually due to slight differences in the strength and timing of the ENSO Cycle. As discussed in this article, both NOAA and JAMSTEC may be working with assumptions about the ENSO cycle that may turn out to be incorrect. So this may limit our ability to forecast even as far out as this summer.

NOAA Updates their Four-Season Outlook on January 20, 2022

January 21, 2022Posted inweatherNo Comments

Introduction

Today is the third Thursday of the month so right on schedule NOAA has issued their Seasonal Outlook. In this article I summarize it and provide links that will take the reader to additional maps and discussions that I have not included but I have included quite a bit in this article. I want to remind everyone that last Thursday NOAA issued their ENSO outlook and that has a lot of influence on their Seasonal Outlook.  The Seasonal Outlook generally reflects La Nina conditions initially with a transition to ENSO Neutral in late Spring. Over the next three months, the Southern Tier drought intensifies but there is relief in the Northwest extending east but not reaching the Dakotas.

NOAA Updates the Status of ENSO

January 14, 2022Posted inweather2 Comments

Updated on January 14, 2022 by adding a graphic. On the second Thursday of every month, NOAA issues its analysis of the status of ENSO. This includes determining the Alert System Status. Although the current status remains the same as La Nina Advisory, the forecast has been adjusted somewhat from last month.  The earlier forecast was that we would transition to ENSO Neutral Status very soon. Now it looks like the La Nina will extend into Spring. The impact of that will show up next Thursday when NOAA issues their Seasonal Outlook. The NOAA ENSO Status Update provides an advance indication of how the forecast might change.

 

Assessing the U.S. Climate in 2021

January 12, 2022Posted inClimate, weather2 Comments

The National Centers of Environmental Information (NCEI) publishes a monthly analysis of the U.S. climate as well as an annual report.  John Bateman, a meteorologist, and an NOAA Public Affairs specialist, sends out an email that summarizes the NCEI report. This article is based on the summary written by John Bateman. At the end of the article is the link to the full NCEI Report. The key takeaways:  CONUS had the fourth warmest year in recent history and 20 billion-dollar disasters were identified.

NOAA Updates the Weather Outlook for January 2022

January 3, 2022Posted inweather1 Comment

Written by Sig Silber

Here are the latest weather and drought forecasts for January 2022.  Every month on the last day of the month NOAA updates the weather forecast for the following month – in this case, January of 2022.  Also included is the summary from a recent USDA report on Irrigation by Frank Ward who is a professor at New Mexico State University.