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Prognostic Discussion for Long-Lead Seasonal Outlooks NWS Climate Prediction Center College Park MD 830 AM EST Thu Feb 19 2026 SUMMARY OF THE OUTLOOK FOR NON-TECHNICAL USERS La Niña conditions are present, as represented in current oceanic and atmospheric observations. A transition from La Niña to ENSO-neutral is expected in February-April 2026 (60% chance), with ENSO-neutral likely persisting through the Northern Hemisphere summer (56% chance in June-August 2026). The March-April-May (MAM) 2026 temperature outlook favors above normal temperatures for southern and central portions of the western Contiguous United States (CONUS), the southern and central Plains, the Lower and Middle Mississippi Valley, the Tennessee Valley, Southeast, and southern Mid-Atlantic. A tilt toward above normal temperatures is also indicated for northwestern Alaska. The highest probabilities (greater than 60 percent) of above normal temperatures are forecast across parts of the Southwest. Below normal temperatures are modestly favored for much of eastern Alaska and parts of the western Great Lakes, Upper Mississippi Valley, and parts of the adjacent Red River Valley. The MAM 2026 precipitation outlook depicts enhanced probabilities of below normal precipitation amounts across the southern two-thirds of the western CONUS and for adjacent areas of the central and southern Plains. Below normal precipitation is modestly favored for Southeast Alaska and adjacent areas of mainland Alaska. The greatest chances of below normal precipitation (above 50 percent probability) are indicated for parts of the Southwest. Above normal precipitation is more likely for the Great Lakes, Ohio Valley, and adjacent areas of the Mississippi Valley. A tilt toward above normal precipitation is also indicated for the northwest coast of mainland Alaska. The greatest chances of above normal precipitation (greater than 40 percent) is indicated across the central Great Lakes. Equal chances (EC) are forecast for areas where probabilities for each category of seasonal mean temperatures and seasonal accumulated precipitation amounts are expected to be similar to climatological probabilities. BASIS AND SUMMARY OF THE CURRENT LONG-LEAD OUTLOOKS Note: For Graphical Displays of the Forecast Tools Discussed Below See: https://www.cpc.ncep.noaa.gov/products/predictions/90day/tools/briefing CURRENT ATMOSPHERIC AND OCEANIC CONDITIONS La Niña continued in January 2026, with below-average sea surface temperatures (SSTs) observed in the east-central equatorial Pacific Ocean. The latest weekly Niño-3.4 index value was -0.7°C, with the westernmost (Niño-4) and easternmost (Niño-1+2) indices at -0.1°C and 0.5°C, respectively. The equatorial subsurface temperature index (average from 180°-100°W) significantly increased, reflecting the strengthening and expansion of above-average subsurface temperatures across the Pacific Ocean. Atmospheric anomalies weakened due to subseasonal variability, but still reflected aspects of La Niña. Low-level westerly wind anomalies were present over the western equatorial Pacific, and upper-level westerly wind anomalies continued across the east-central equatorial Pacific. Suppressed convection was weakly evident near the Date Line and over the equatorial Maritime Continent, with enhanced convection located off the equator. The traditional and equatorial Southern Oscillation indices were positive. Collectively, the coupled ocean-atmosphere system remained consistent with La Niña.
PROGNOSTIC DISCUSSION OF SST FORECASTS The North American Multi-Model Ensemble (NMME) average, including the National Centers for Environmental Prediction (NCEP) Climate Forecast System version 2 (CFSv2), favor the onset of ENSO-neutral in February-April 2026. The team consensus also reflects this outcome, with ENSO-neutral persisting through the Northern Hemisphere summer 2026. For the late summer and beyond, there is a 50-60% chance of El Niño forming, though model uncertainty remains considerable and forecasts made this time of year tend to have lower accuracy. In summary, a transition from La Niña to ENSO-neutral is expected in February-April 2026 (60% chance), with ENSO-neutral likely persisting through the Northern Hemisphere summer (56% chance in June-August 2026). According to the ENSO team, there is a 75% chance of a transition to ENSO-neutral conditions during January-February-March (JFM) 2026. ENSO-neutral conditions are likely to persist through at least the Northern Hemisphere late spring before potentially shifting toward El Nino in the summer and early fall of 2026. While the chance of El Nino is higher than the chance of ENSO-neutral or La Nina for those seasons, model predictions remain uncertain due to lower forecast accuracy as we progress through the spring months and into summer. Some lingering La Nina influence is expected for FMA 2026, but the potential influence of El Nino later in the year is too uncertain to determine at this time. PROGNOSTIC TOOLS USED FOR U.S. TEMPERATURE AND PRECIPITATION OUTLOOKS Dynamical model forecasts from the NMME, the CFSv2, and the Copernicus (C3S) multi-model ensemble system were used extensively for the first six leads when they are available, as was the objective, historical skill-weighted consolidation and Calibration, Bridging, and Merging (CBaM) guidance, that combines both dynamical and statistical forecast information. Composites derived from the current and forecast state of ENSO were also utilized. Analysis of antecedent conditions such as extratropical sea surface temperatures, snow cover anomalies, and sea ice extent played were considered where appropriate. At later leads, decadal trends in temperature and precipitation were increasingly relied upon in creating the seasonal outlooks. PROGNOSTIC DISCUSSION OF OUTLOOKS - MAM 2026 TO MAM 2027 TEMPERATURE One of the major forecast challenges for the upcoming spring is incorporating the expected transition from La Niña to ENSO neutral conditions. Composites derived from the recent and forecast evolution of ENSO generally favor warmth across much of the West and an axis of colder than normal temperatures stretching from eastern Alaska southeastward to parts of the northern tier of the CONUS. Dynamical model guidance is much warmer but still reflects a relative minima in above normal temperature probabilities from eastern Alaska to portions of the north-central and northeastern CONUS. While there are large disagreements in the category of the forecast probabilities, the configuration of the overall temperature pattern is consistent among dynamical and statistical guidance. The MAM outlook represents a compromise between the two sets of solutions. In general, there is very good agreement among both statistical and dynamical model guidance on favoring warmth across the southern two-thirds of the western CONUS. Probabilities of above normal temperatures exceed 60 percent across parts of the Southwest where the warm signal was the strongest. Conversely, below normal temperatures are favored for eastern Alaska and for the western Great Lakes, and parts of the Upper Mississippi Valley and adjacent areas of the Red River Valley. These areas of favored below normal temperatures are consistent with the northwest to southeast axis of reduced above normal temperature probabilities reflected in both statistical and dynamical model guidance. Enhanced probabilities of below normal temperatures were kept modest to reflect the differences between the colder statistical and warmer dynamical model guidance. Uncertainty is also high across the eastern half of the CONUS, where statistical ENSO composites reflect less confidence in warmth relative to model guidance. Nevertheless, modestly enhanced probabilities of above normal temperatures are indicated from the Southern and Central Plains eastward to the Lower and Middle Mississippi Valley, Tennessee Valley, Gulf Coast, the Southeast, and parts of the adjacent Mid-Atlantic, where model guidance and trend show relatively strong warm signals. Western Alaska is also an area of high uncertainty due to weak or conflicting guidance. A weak tilt toward above normal temperatures is indicated for northwestern Alaska and parts of the Aleutians, following dynamical model guidance and trends. From April-May-June (AMJ) through June-July-August (JJA), a notable northward expansion of enhanced odds for above normal temperatures is forecast across the CONUS. Above normal temperatures are favored for the entire southern two-thirds of the CONUS in AMJ and overspread the entire CONUS by JJA. This extensive coverage of increased above normal temperature chances is supported by dynamical model guidance and trends, especially across the western CONUS. Probabilities of above normal temperatures exceed 50 percent across the Southwest and adjacent Great Basin with greater than 60 percent chance of above normal temperatures noted for the Four Corners. The strongest signal for warmth shifts north across the interior West during the summer with greater than 50 percent chances of above normal temperatures reaching the Northern Rockies by JJA. The consensus of dynamical and statistical guidance has a relatively weaker warm signal across the eastern CONUS. Therefore, EC is indicated in the Great Lakes and Northeast in AMJ. By JJA, increased chances of above normal temperatures envelops the entire East from south to north but with only modestly enhanced probabilities. Uncertainty abounds across Alaska between AMJ and JJA as warm dynamical model guidance clashes with colder ENSO composites and weak trends. EC is indicated for the majority of the state during spring before yielding to a tilt toward warm in eastern areas as the cold signal in the ENSO statistical tools begins to diminish. By JAS, a transition to El Niño becomes more likely, increasing uncertainty in the forecast pattern. Statistical ENSO and trend guidance generally depict less confidence in warmth across the central CONUS as we approach the fall and beyond. EC is introduced to parts of the southern and central Plains and adjacent areas of the Mississippi Valley during JAS. This EC area expands across central CONUS during ASO as uncertainty increases. Large areas of EC dominate the central CONUS by DJF and beyond. Increased chances for above normal temperatures are indicated for both the west and east coasts of the CONUS from JAS through at least JFM 2027 owing largely to recent trends. Alaska leans mostly warm from the late fall through next winter due to a combination of trends and statistical ENSO guidance. PRECIPITATION The MAM precipitation outlook features increased chances of above normal precipitation from the Great Lakes southward to the Ohio Valley and areas of the adjacent Mississippi Valley, generally consistent with a La Niña signature. The general consensus of dynamical and statistical tools support below normal precipitation for the southern two-thirds of the West as well as much of the adjacent central and southern Plains. Probabilities of below normal precipitation exceed 50 percent across parts of the Southwest where recent trends show the strongest dry signal. Uncertainty is high across the southeast due to a dichotomy between drier dynamical model guidance and wetter trends. Therefore EC is indicated for this area. EC is also indicated along the immediate East Coast owing to weak signals among dynamical model guidance. EC is also indicated for the northwestern CONUS as above normal precipitation is favored in the monthly outlook for March but then the guidance trends drier deeper into spring. Dynamical model guidance is in generally good agreement in supporting below normal precipitation across Southeast Alaska and adjacent areas of the mainland. A tilt toward above normal precipitation is indicated for the west coast of the mainland, consistent with the C3S, CBaM, and trend. However, probabilities were kept modest due to relatively weak signals and lack of support from the remainder of the suite of statistical and dynamical model guidance. As the influences of La Niña wane deeper into Spring, the area of elevated above normal precipitation chances over the Great Lakes diminishes substantially in AMJ and is removed entirely by MJJ. A dry signal emerges across parts of the western Great Lakes and Upper Mississippi Valley from MJJ to JJA and migrates westward to the northern Plains during JAS, driven largely by trends. Conversely, a new area of increased above normal precipitation chances emerges across the Southeast by AMJ, driven primarily by the CBaM and trend. This wet signal migrates northward along the East Coast during MJJ and JJA, with support from dynamical model guidance. This wet signal slowly diminishes to the mid-Atlantic area and adjacent areas of the Appalachians by SON as confidence decreases. Farther to the south, a dry signal develops over the Florida Peninsula from JAS through SON, peaking in coverage during ASO, possibly resulting from an emerging El Niño and associated reduced tropical activity. Further to the west, dynamical models and trends generally support a northward progression of favored dryness from the Great Basin and central Rockies to the Northern Rockies from AMJ through JAS. A persistent dry signal is noted eastward to the central Plains from AMJ through JJA from the C3S and CBaM, with some support from trends. By MJJ, an enhanced monsoon signal emerges across parts of the Southwest, supported by the CFsv2, C3S, and the CBaM. This enhanced monsoon signal, would be consistent with dryness in the Plains, as the precipitation pattern tends to be anticorrelated between these two regions. Slightly elevated probabilities of above normal precipitation are forecast to persist from MJJ through ASO for parts of the Southwest, related to the potential of an enhanced monsoon. Across Alaska, slightly elevated probabilities of above normal precipitation persist from AMJ through JJA, initially supported by the C3S and the final consolidation during AMJ and then by trend from MJJ to JJA . Thereafter, above normal precipitation is favored across southwestern mainland Alaska during JAS and spreading eastward along the South Coast by ASO, supported by ENSO composites, trend, and the CBaM. The forecast for longer lead times later next fall, winter, and early spring 2027 are informed mostly by trend. These longer leads are characterized by slight tilts toward above normal precipitation initially along the East Coast during NDJ and then migrating northward and westward toward the Northeast, Great Lakes, and Ohio Valley from DJF through FMA, and eventually to the Upper Mississippi Valley during MAM 2027. Farther to the west, a slight tilt toward below normal precipitation is noted across the Central Plains during ASO migrating northeastward to the Upper Mississippi Valley during SON. Weak tilts toward above normal precipitation persist across parts of the South Coast and North Slope of Alaska during the longer leads. FORECASTER: Scott Handel The Climatic normals are based on conditions between 1991 and 2020, following the World Meterological Organization convention of using the most recent 3 complete decades as the climatic reference period. The probability anomalies for temperature and precipitation based on these new normals better represent shorter term climatic anomalies than the forecasts based on older normals. For a description of of the standard forecast tools - their skill- and the forecast format please see our web page at https://www.cpc.ncep.noaa.gov/products/predictions/long_range/tools.html Information on the formation of skill of the CAS forecasts may be found at: https://www.cpc.ncep.noaa.gov/products/Soilmst_Monitoring/US/Outlook/outlook.shtml
Notes - These climate outlooks are intended for use prior to the start of their valid period. Within any given valid period observations and short and medium range forecasts should be consulted. This set of outlooks will be superseded by the issuance of the new set next month on Mar 19 2026
1991-2020 base period means were implemented effective with the May 20, 2021 forecast release. $$
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