April 2021 - Page 2 of 2 - Climate Impact Company

04/14/2021, 7:23 pm EDT

July 2021 forecast roars to 400 CDD. Third hottest past 20 years.

In today’s updated summer 2021 outlook the temperature trend was much warmer and the CDD forecasts show that change particularly in July and August. The July forecast roared from 374 to 400 CDD while August surged from 322 to 340 CDD.

04/14/2021, 10:45 am EDT

U.S. Summer 2021 Outlook/Climate Discussion

The outlook is very similar to previous outlooks projecting a hotter than normal summer season for the Southwest to Central and Northeast U.S. The Great Plains gain a dry climate pattern and widening drought is increasingly likely. The wet zone is across the East and Southeast U.S. Land-falling hurricanes contribute to the wet forecast in September.

04/12/2021, 1:42 pm EDT

Still A Question Mark…ENSO Pattern Later This Year

La Nina 2020-21 is barely hanging on as the Nino34 SSTA is right at the La Nina threshold of -0.5C. Other Nino SSTA regions are similar. Neutral ENSO is expected the next 1-3 months and possibly through meteorological summertime. However, there remains a great debate on whether La Nina returns.

04/08/2021, 7:54 pm EDT

Daily Feature: March and Q1/2021 U.S. Temperature/Precipitation Rankings

March 2021 was another warm month ranking 14th warmest in the 1895-2021 climatology. The North-central U.S. ranked in the “much above” normal category while the remainder of the U.S. (except the Great Basin, California and the Southwest) were warmer than normal. North Dakota came close to a record warm March.

04/07/2021, 8:11 am EDT

Madden Julian Oscillation Shifts Toward The Dateline

The ECMWF 14-day MJO forecast indicates an eastward shift away from Australia. The transition indicates gradually less wet risk to Australia (especially the north coast) and a slight increase in wet risk for South America (by mid-month). The influence on the U.S. a shift from short-term warmth to a cooler medium-range forecast.

04/07/2021, 7:49 am EDT

2021 North Atlantic Tropical Cyclone Season Forecast

The Climate Impact Company 2021 tropical cyclone season activity forecast for the North Atlantic basin indicates 17 tropical storms, 9 hurricanes and 2 intense hurricanes. Above normal activity is expected although not as active as last year. The accumulated cyclone energy forecast is 127.

04/01/2021, 2:32 pm EDT

Tropical North Atlantic Index Versus Hurricanes 1995-2020

A significant predictor for numbers of the most intense storms is the presence of warmer-than-normal deep tropics ocean water as measured by the tropical North Atlantic (TNA) index. During the past 25 years the North Atlantic tropics have typically been somewhat warmer than normal during the core of the tropical cyclone season.

04/01/2021, 4:18 am EDT

Negative Indian Ocean Dipole Ahead for Australia

The Australia Bureau of Meteorology is forecasting negative Indian Ocean Dipole to develop for JUL/AUG 2021. The event is weak and short-lived. -IOD climate pattern are associated with wet climate across western and southern Australia.