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Flash Flood Threats in the Southeast and Rockies

Two flash flood concerns the next few days across the U.S. The continued onslaught of monsoonal heavy rain and thunderstorms will impact Colorado and New Mexico today and Wednesday. Of most concern are recent and vulnerable burn scar areas for potential debris flows. Meanwhile, a stalled front will result in repeated rounds of slow moving storms from the eastern Carolinas to southeast Georgia. Read More >

Observed Model Pressure Differences

Observation Pressure Gradient Table
National Weather Service, Anchorage AK Forecast Office
Tue Aug  3 20:10:01 GMT 2021

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 
0221   0.4   2.3   0.1  -1.8  -0.5  -0.6     m  -0.7   3.5     m  -2.9  -3.7   0.4 
0222   0.8   2.8  -0.1  -2.1  -0.6  -0.7     m  -0.6   3.4     m  -3.5  -4.2   0.9 
0223   1.4   3.3  -0.1  -2.6  -1.3  -0.6     m  -0.5   3.6   4.1  -3.9  -4.8   0.8 
0300   1.6   3.6  -0.3  -3.0  -1.8  -1.1     m  -0.8   4.2   4.3  -4.7  -5.3   0.9 
0301   1.8   3.6  -0.6  -3.2     m  -1.7     m  -1.1   4.6     m  -5.3  -6.1   0.8 
0302   1.9   4.2  -0.6  -3.2  -2.8  -1.8     m  -1.2   4.6   4.8  -6.0  -6.3   0.9 
0303   2.2   4.2  -0.9  -3.0  -3.1  -3.1     m  -2.2   4.1   4.6  -7.3  -7.7   0.9 
0304   2.3   4.4  -1.1  -2.9  -3.0  -3.4     m  -2.3   3.9   4.5  -7.8  -8.2   1.0 
0305   2.7   4.0  -1.5  -2.9  -3.3  -3.7     m  -2.2   3.6   4.2  -7.7  -8.7   1.0 
0306   2.2   4.1  -1.8  -2.2  -3.2  -4.4     m  -2.6   2.8   3.5  -8.5  -9.0   1.0 
0307   2.1   3.2  -1.8  -2.4  -2.8  -3.6     m  -1.8   2.3   2.7  -6.8  -8.6   0.9 
0308   2.3   3.2  -1.9  -2.2  -2.6  -3.0     m  -1.1   1.7   2.3  -6.2  -7.3   1.1 
0309   1.8   2.5  -1.6  -1.8  -2.4  -2.9     m  -1.3   1.4   1.7  -5.4  -7.2   0.7 
0310   1.3     m  -1.1  -1.7  -1.4  -2.7     m  -1.6   1.1   1.5     m  -6.6   0.2 
0311   1.5   3.2  -0.3  -1.6  -0.6  -2.4     m  -2.1   0.8   1.0  -5.6  -6.3  -0.5 
0312   0.6     m   0.0  -1.4  -0.2  -2.1     m  -2.1   0.6   0.8     m  -5.9  -0.7 
0313   1.9   3.2   1.2  -1.8   0.4  -1.1     m  -2.3   0.6   1.5  -4.3  -5.8  -1.0 
0314   1.5     m   0.6  -0.9   0.6  -1.7     m  -2.3   0.0   0.7     m  -5.3  -0.9 
0315   1.2   2.2   1.1  -1.0   1.0  -1.2     m  -2.3     m     m  -3.4  -5.1  -1.1 
0316   1.1   2.5   1.2  -0.7   1.3  -1.3     m  -2.5  -0.5   0.6  -3.8  -5.0  -1.2 
0317   0.8   2.2   1.1  -0.9   0.7  -0.9     m  -2.0  -0.2   1.2  -3.1  -4.6  -1.2 
0318   0.7   1.6   0.4  -0.4   0.1  -1.4     m  -1.8  -0.3   1.0  -3.0  -4.8  -1.2 
0319   0.8   1.8   0.2  -0.6  -0.4  -1.3     m  -1.5   0.1   0.8  -3.1  -4.8  -1.0 
0320   0.6   1.8   0.0  -0.5  -0.7  -1.1     m  -1.1   0.4   1.1  -2.9  -4.5  -0.7 

 


Forecast Model Pressure Differences

 North American Mesoscale Model

Model Forecast Pressure Gradient Table
National Weather Service, Anchorage AK Forecast Office
Tue Aug  3 15:30:02 GMT 2021

     ETA242 Pressure Difference Forecast ( 20210803_1200  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 
0312   2.0   1.6  -0.9  -0.9  -0.9  -1.8  -0.5  -1.0  -1.1  -0.2  -3.4  -2.8   0.1
0315   0.8   0.9   0.2   0.3   0.8  -2.0  -0.3  -2.2  -1.8  -1.1  -3.0  -2.8  -1.3
0318   0.6   1.1  -0.5   0.3  -0.2  -2.4  -0.2  -1.9  -2.0  -0.9  -3.4  -2.7  -0.1
0321   0.4   1.6  -1.2  -0.6  -1.4  -3.4   0.2  -2.2   0.1   0.5  -5.0  -3.8   0.8
0400   1.1   1.3  -1.7  -1.6  -2.5  -3.5   0.2  -1.8   1.6   1.5  -4.8  -5.1   1.5
0403   0.0  -0.6  -2.0  -1.5  -2.9  -3.3   1.1  -1.3   2.3   1.9  -2.7  -2.9   1.2
0406  -0.5  -0.7  -1.5  -0.3  -1.4  -3.3   1.9  -1.7   1.8   2.4  -2.6  -1.5   0.9
0409  -0.6  -0.6  -0.6  -0.7  -0.7  -1.8   1.7  -1.2   1.5   2.0  -1.2  -0.6   1.5
0412  -0.2  -1.4  -0.2  -0.3  -0.3  -0.8   1.8  -0.6   1.0   1.1   0.6   0.5   1.4
0415   0.1  -1.9  -0.0   0.2   0.0  -0.5   1.9  -0.5   0.6   1.2   1.3   0.9   1.6
0418  -0.2  -2.4  -0.2   0.0  -0.3  -0.3   2.0  -0.1   0.4   1.0   2.1   1.1   2.0
0421  -0.9  -2.7  -0.9   0.0  -1.0  -1.0   2.9  -0.1   0.2   0.6   1.7   0.9   1.7
0500  -0.5  -1.9  -0.6  -0.1  -0.5  -1.4   3.6  -0.9   0.2   0.9   0.5  -0.1   0.2
0503   0.0  -0.9  -0.6  -0.8  -0.9  -1.2   3.8  -0.5   0.3   0.9  -0.3  -1.1  -0.6
0506   0.0   0.1  -0.8  -1.0  -1.2  -1.3   4.7  -0.5  -0.2  -0.0  -1.5  -1.6  -1.9
0509   0.5   0.7  -0.5  -0.5  -0.9  -1.6   5.2  -1.0  -0.4  -0.1  -2.2  -1.7  -3.2
0512   1.1  -0.0  -0.1  -0.3  -0.1  -1.6   3.9  -1.6  -0.5  -0.2  -1.6  -2.0  -4.2
0515   1.3  -0.5  -0.0  -0.4  -0.3  -1.7   3.1  -1.7   0.3   0.5  -1.2  -2.4  -4.5
0518   0.1  -1.2  -0.4  -0.3  -0.6  -2.2   2.4  -1.8  -0.2  -0.1  -1.1  -1.0  -4.1
0521  -1.3  -1.8  -0.7  -0.4  -1.0  -3.0   1.1  -2.2  -0.8  -0.3  -1.2  -0.6  -3.7
0600  -1.7  -1.4  -1.5  -0.7  -1.7  -4.0  -0.2  -2.5  -1.1   0.0  -2.6  -1.8  -3.3
0603  -1.4  -0.0  -1.8  -1.9  -2.6  -4.4  -0.9  -2.6  -0.6  -0.2  -4.4  -3.2  -2.8
0606  -1.1   0.8  -1.8  -1.0  -1.7  -4.7  -0.8  -2.9  -1.1  -0.5  -5.5  -4.3  -2.8
0609  -0.4   1.1  -1.0  -0.8  -0.8  -3.9  -0.5  -2.9  -1.5  -0.1  -5.0  -3.9  -2.9
0612   0.1   0.9  -0.3  -0.6  -0.2  -3.2  -0.2  -2.9  -2.5  -1.0  -4.2  -3.4  -3.0
0615   0.4   1.2  -0.1  -0.9  -0.1  -2.8  -0.0  -2.7  -3.4  -1.6  -4.0  -3.0  -3.3
0618  -0.0   0.7  -0.2  -1.1  -0.2  -2.8  -0.4  -2.6  -3.9  -2.2  -3.4  -2.6  -3.1
0621  -0.4   0.3  -0.8  -0.6  -0.4  -3.0  -0.5  -2.3  -4.6  -3.1  -3.3  -2.6  -2.8
0700  -0.3   0.6  -0.6  -0.7  -0.2  -2.9  -1.0  -2.4  -4.5  -3.1  -3.5  -2.8  -2.7