Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Northeastern Plains

March-April-May Precipitation

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Results for the climate division averages for all La Niña events indicates that the northeast plains have the smallest average precipitation deficit for the spring season, with 79% to 85% of the long term precipitation. The three sites examined support this value with departures only slightly below normal. During strong La Niña events, all stations have a significant reduction in precipitation. It is also important to note that for these stations, the average precipitation in March-April-May is more than double that of winter, so that similar departures in terms of percent actually result in a greater departure in terms of inches of precipitation.

A description of the graphs is located at the bottom of the page.

winter precip for clayton during la nina events

Percent of Longterm Average for all La Niña Events = 85% , for strong La Niña Events = 59%

winter precip for tucumcari during la nina events

Percent of Longterm Average for all La Niña Events = 79% , for strong La Niña Events = 50%

winter precip for clovis during la nina events

Percent of Longterm Average for all La Niña Events = 83% , for strong La Niña Events = 51%

Precipitation values for 3-month periods during 19 La Niña Events since 1949-50 are plotted with respect to the long term precipitation average, listed to the right of the graph. The precipitation totals for each 3-month period are plotted above or below each bar. Years for which the La Niña Event was considered to be strong are colored in purple. "M" represents a 3-month period with missing data. Finally, the percents of longterm normal for all La Niña events and for the strong La Niña events are listed below each graph.

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Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

NWS ABQ La Nina Spring Precipitation CD3