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Heavy rain and flash flooding possible in portions of the Southwest this weekend

An upper-level low in the Southwest U.S. will act as a trigger for thunderstorms this weekend. The area of greatest concern is in New Mexico, southeast Utah and portions of southern Colorado. Storms will be slow moving and could bring several rounds of rain to the same areas. Rainfall amounts may exceed 3 inches in localized areas. Flash Flood Watches are in effect. Read More >

Observed Model Pressure Differences

Observation Pressure Gradient Table
National Weather Service, Anchorage AK Forecast Office
Sat Aug 19 13:10:01 GMT 2017

Time  PAWR- PACV- PATK- PANC- PATK- PAGK- PANC- PAGK- PAHO- PADQ- PAGK- PAGK- PANN-
      PANC  PANC  PANC  PAHO  PAEN  PANC  PAMC  PATK  PAKN  PAKN  PACV  PAVD  PATK 
1813     m     m     m     m     m     m     m     m     m     m     m     m     m 
1814   1.6   1.6   0.0  -0.3   0.0   1.5   2.3   1.5   2.6   2.2  -0.1  -0.2  -2.3 
1815   1.7   1.8  -0.1  -0.1  -0.1   1.9   1.8   2.0   2.6   2.6   0.1   0.0  -2.3 
1816   1.9   2.4   0.2  -0.3   0.1   2.2   1.5   2.0   2.6   2.4  -0.2  -0.1  -2.2 
1817   2.2   2.7   0.3  -0.2   0.1   2.5   1.4   2.2   1.6   1.6  -0.2  -0.2  -2.2 
1818   2.1   2.9   0.1   0.1   0.1   2.3   1.3   2.2   1.7   1.8  -0.6  -0.6  -1.9 
1819   2.4   3.2   0.1   0.1   0.1   2.1   1.2   2.0   1.5   1.6  -1.1  -1.1  -1.7 
1820   2.7   3.5   0.2   0.1   0.1   1.8   0.9   1.6   1.1   1.1  -1.7  -1.4  -1.8 
1821   2.8   3.8   0.2   0.1   0.0   1.5   0.6   1.3   1.2   1.4  -2.3  -2.2  -2.6 
1822   3.0   4.2   0.2   0.0   0.1   1.6   0.3   1.4   0.6   0.8  -2.6  -2.6  -2.5 
1823   2.8   4.6   0.4  -0.1   0.1   1.5   0.3   1.1   0.9   1.4  -3.1  -3.0  -3.0 
1900   2.8   4.8   0.5  -0.1   0.3   1.1   0.1   0.6   0.7   0.7  -3.7  -3.4  -2.5 
1901   2.5   4.4   0.4  -0.1   0.4   0.9  -0.1   0.5   0.4   0.5  -3.5  -3.5  -2.3 
1902   1.9   4.0   0.2   0.2   0.7   0.7   0.3   0.5   0.5   0.7  -3.3  -3.0  -2.4 
1903   1.9   3.7   0.4  -0.2   0.6   1.1  -0.2   0.7   0.6   0.6  -2.6  -2.6  -2.7 
1904   1.5   3.0   0.6   0.2   0.9   1.0  -0.1   0.4   0.3   0.7  -2.0  -2.4  -2.8 
1905   1.5   2.7   0.8   0.4   1.2   1.1  -0.2   0.3   0.2   0.7  -1.6  -2.1  -2.7 
1906   1.7   2.5   1.1   0.2   1.5   1.5  -0.7   0.4  -0.6   0.0  -1.0  -1.6  -2.7 
1907   1.3   2.0   0.9   0.5   1.6   1.5  -0.9   0.6  -0.6   0.2  -0.5  -0.8  -2.5 
1908   1.2   1.3   1.1   0.0   1.8   1.4  -1.3   0.3  -0.3   0.3   0.1  -0.9  -2.1 
1909   0.6   1.0   1.0   0.1   1.5   1.2  -1.5   0.2  -0.2   0.5   0.2  -0.6  -1.7 
1910   1.0   0.9   0.9   0.0   1.1   1.8  -1.9   0.9  -0.4   0.4   0.9   0.2  -1.2 
1911  -0.2   0.8   1.1   0.1   1.6   2.0  -2.1   0.9  -0.4   0.4   1.2   0.8  -1.2 
1912   0.5   0.4   1.0  -0.3   1.1   2.2  -2.4   1.2  -0.2   0.4   1.8   1.2  -0.7 
1913   0.5   0.0   0.9  -0.2   1.0   2.1  -2.3   1.2  -0.1   0.6   2.1   1.2  -0.5 

 


Forecast Model Pressure Differences

 North American Mesoscale Model

Model Forecast Pressure Gradient Table
National Weather Service, Anchorage AK Forecast Office
Sat Aug 19 03:30:01 GMT 2017

     ETA242 Pressure Difference Forecast ( 20170819_0000  UTC)
DDHH  PAWR- PACV- PATK- PANC- PATK- PAGK- PANC- PAGK- PAHO- PADQ- PAGK- PAGK- PANN-
      PANC  PANC  PANC  PAHO  PAEN  PANC  PAMC  PATK  PAKN  PAKN  PACV  PAVD  PATK 
1900   3.0   3.9   0.6   0.6   1.2   0.4   0.4  -0.1  -1.3  -0.3  -3.5  -3.3  -2.3
1903   1.5   2.5   0.4   1.2   2.2  -0.4   0.9  -0.7  -0.9  -0.4  -2.9  -2.3  -3.0
1906   1.4   2.2   1.1   1.1   2.3   1.4  -0.4   0.3  -1.8  -0.6  -0.8  -0.8  -3.4
1909  -0.3   0.8   1.4   0.7   2.3   2.4  -1.3   1.0  -2.8  -0.9   1.7   1.2  -2.7
1912  -0.4  -0.4   1.3   0.1   1.8   1.5  -2.1   0.3  -2.4  -0.8   1.9   0.6  -1.3
1915  -0.2  -1.4   1.0  -0.1   1.0   1.8  -2.1   0.8  -1.9  -0.3   3.2   1.5  -0.4
1918  -0.2  -1.5   0.1  -0.2  -0.2   0.8  -1.6   0.7  -1.6  -0.4   2.3   1.3   0.6
1921  -0.6  -0.8  -0.8  -0.4  -1.1   0.1  -1.0   0.8  -1.3  -0.7   0.8   0.4   1.1
2000  -0.3   0.2  -1.3  -0.2  -1.3  -0.1  -0.9   1.2  -0.4  -0.3  -0.3  -0.2   1.1
2003   0.8   1.3  -0.7  -0.2  -0.6   0.5  -1.0   1.2   0.0   0.3  -0.8  -0.7   0.7
2006   1.8   2.2  -0.3  -0.3  -0.3   0.8  -1.1   1.0   0.4   0.4  -1.4  -1.2   0.4
2009   1.7   2.1   0.0   0.1   0.1   0.8  -1.3   0.8   0.6  -0.2  -1.2  -1.4   0.4
2012   1.4   2.5   0.4   0.5   0.4   1.6  -1.7   1.2   0.4  -0.7  -0.9  -0.4   0.5
2015   1.4   3.1   0.8   0.7   0.9   2.3  -2.3   1.5   0.2  -1.4  -0.8   0.0   0.5
2018   1.0   2.6   1.0   0.9   1.3   2.4  -2.9   1.4  -0.6  -2.3  -0.2  -0.1   0.7
2021   0.9   1.4   1.1   1.1   1.8   1.7  -3.2   0.6  -1.6  -3.8   0.3   0.3   0.8
2100   0.7   0.2   1.3   2.0   1.9   0.7  -3.9  -0.6  -3.7  -5.4   0.5   0.9   1.4
2103   0.2  -1.8   0.8   2.7   1.5  -0.1  -4.5  -0.8  -5.4  -6.6   1.7   0.6   2.3
2106   0.0  -2.6   0.8   2.1   0.6   1.0  -6.5   0.2  -6.8  -7.8   3.6   1.8   4.0
2109  -0.5  -4.1   1.2   1.1   0.9   0.6  -8.8  -0.6  -7.7  -8.9   4.7   1.8   5.1
2112  -1.0  -4.4   2.1   1.0   1.9  -0.6  -9.9  -2.7  -9.6  -9.0   3.8   1.3   5.3
2115  -0.8  -4.1   2.8   0.7   2.3  -0.5 -10.9  -3.2 -11.0 -10.0   3.6   0.7   5.4
2118  -0.8  -2.6   2.9   0.2   2.3   1.4 -11.6  -1.5 -11.1 -10.0   4.0   1.8   5.3
2121  -0.7  -2.1   1.8   0.5   1.4   1.9 -10.5   0.2 -10.3  -9.7   4.1   2.2   5.5
2200  -0.2   0.8   1.4   0.2   1.3   2.1  -9.3   0.7  -9.0  -8.9   1.3   1.3   4.4
2203   0.2   0.8   0.3   1.0   1.2   1.4  -6.4   1.1  -7.7  -8.0   0.6   0.6   2.8
2206   0.7   0.4   0.2   1.3   0.7   0.8  -4.6   0.6  -7.1  -7.1   0.4  -0.1   1.5
2209   0.6  -0.4   0.0   0.9   0.3   0.5  -3.6   0.5  -6.7  -6.7   0.9   0.1   0.7
2212   0.1  -2.5   0.2   0.5   0.3   0.1  -2.8  -0.1  -6.3  -5.7   2.6   0.0   0.2