April, 2018 Met Central - Drier Again But Also Cooler

March temperatures roller-coastered throughout the entire month.
They ran
closer to normal than did either of the two previous months although
mean daily highs and meam daily lows and mean daily average
temperatures all ran above normal. There was one new daily high
temperature and one daily low temperature record set during the month.

    March Record Temperatures - High 30.1 (86.2 F), Low -21.5 (-6.7 F)
    March '18 Record Temperatures - High 27.5(81.5 F), Low -11.7 (10. F)

March moisture was again below average for the month with an average
of 10.1 mm on the refuge. This moisture came during two storm, one on
the 11th and 12th and other on the 27th. The second storm came with
convective type showers that dropped precipitation amounts varying
from 0 to 18 mm across the refuge. A cold front pushing through the
central mountain canyons pushed the moisture to the west so that the
western side of the refuge did much better than did the the eastern side.

March Meteorological Summary

                         March       March '18        March '18
Variable            Long-term* Mean    Mean           Mean Range
Mean Max Temp (C)         18.18            18.6         17.4 - 19.6
Mean Min Temp (C)          0.77             1.5         -1.5 - 3.3
Mean Average Temp (C)      9.47            10.1          9.1 - 11.4
Mean R.H. (%)              34.9            29.7         28.4 - 32.5
Mean Vap Press. (mb)       3.79            3.44         3.25 - 3.56
Mean Max Wind (m/sec)      10.9            10.6         10.1 - 10.7
Mean Solar Rad. (kWh/m2)   5.88             6.15        5.73 - 6.65
Precip.(mm)                12.8            10.1          4.0 - 24.5
*Long-term refers to all of the Sevilleta met stations for 1989-2016

Albuquerque - Sevilleta Comparison

Albuquerque did not do all well as the Sevilleta with regards to
moisture during March. Winds through Tijeras Canyon pushed much of the
Feb. 27th moisture to the Albuquerque West Mesa area.

               Loc         Precip          Normal         % of Normal
March		ABQ 	    4.6 mm         14.5 mm           31 %
                SEV        10.1 mm         12.8 mm           79 %

Year to Date    ABQ        18.4 mm         36.4 mm           51 %
                SEV        25.0 mm         28.3 mm           88 %
Remember to check National Weather Service Monthly highlights at:

Water-year Precipitation

The water-year total for the Sevilleta is now only running about half of

     Water Year Precipitation (mm)

Month           Mean            2017-2018    
Oct             22.5              12.2 
Nov             12.4               0.0
Dec		14.3		   0.0
Jan 		 8.9		   2.6
Feb		 7.5		  12.3
Mar		12.8		  10.1
                77.5		  37.1     


Drought conditions continued to worsen across New Mexico during
The U.S. Drought Monitor
rates 99.5% of NM is under some drought status
with 79% being under sever drought conditions and 34% being under
extreme drought- the northern third of the state.


The La Nina appears to be slowly waning. The Sea Surface Temperature
anomaly for the key 3.4 Nino zone ended the month at -0.7, up from
-0.8 at the end of February. The Ocean Nino Index (ONI) for the
Jan-Feb-Mar period was -0.9, up from -1.0 from the previous 3-month
period. This makes five 3-month periods in the La Nina range - less
than -0.5. This makes this an "official" La Nina year. This makes two
successive La Nina years

The Southern Oscillation Index (SOI) continues to see=saw wildly going
from went +1.1 in January to -0.5 for February to +1.5 in March. The
5-month running mean went from +0.54 to +0.60, a little further into
the La Nina zone.

Notables From On and Off the Sev

March Forecast

NOAA continues the drier and warmer than normal prediction for April.

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