Tuesday, May 1, 2018

Week 1 Day 1 Wrap Up

Yesterday our forecasters operated in Cheyenne, WY and Lubbock, TX CWAs. Weather was pretty quiet but feedback from the forecasters is provided below:

ABI and All-Sky LAP
1 minute imagery helped track individual cu field development under thin cirrus

Cloud phase didn’t help any more just the Vis to analyze initiation

CAPE and LI seemed underdone by about half compared to mesoanalysis

All-Sky LAP seemed to bring values down in the LUB CWA closer to mesoanalysis than what the GFS had which seemed overdone

There was an upward trend in CAPE throughout the day which seemed useful as the day wore on and reports started coming in.

Doesn’t seem to add value but did perform well

Satellite derived CAPE and other products will be useful for off the East coast where mesoanalysis cut off at the coast

A lot of cloud cover caused the layered PW to not be too helpful

GLM
Forecasters really just need to know where the lightning flashes are

Need to be able to see the trend in the color tables to be able to see the cores and to see the increases and decreases better

Open to many suggestions on color tables that would be helpful for forecasters

Having different color curves for the different products would probably be more useful to to pull out the highlights of each product

Want a product that is 5 minute cumulative with 1 minute updates

Just the 1 minute data makes it hard to see the trends than having a 5 minute cumulative with a 1 minute update

NUCAPS
Issues with gridded products coming in the full way so they didn’t see much use

Modified NUCAPS adjustment way overdid the boundary layer moisture with height

NUCAPS seemed to be too cool in the mid levels and the tropopause was too low

30 minutes to an hour latency for the point soundings would be ideal

Anything over an hour would probably not be looked at and seen as out of date

The modified and unmodified were the same and didn’t make any modifications

Modified should at the very least update the surface temperature and dew point to match the RTMA

ProbSevere
Might be useful to display both the all hazards and tornado at the same time to be able to capture the tornado probabilities if they jump up

Interested to see if the probabilities are more calibrated than previous versions

In LUB the storm had a hail spike and ProbSevere went up to ~55% which with both of those prompted a warning

Want to be able to have all the hazards in one pane but still be able to easily distinguish between the severe hazards

Lines would probably need to be in different colors than the all hazards ProbSevere

Possibly would be good to toggle through with a key on the keyboard

CI
The GOES West CI over Cheyenne seemed to do better probably due to look angle

In LUB the CI didn’t seem to work too well under a pretty thick cirrus deck where you could see the cu developing in the visible imagery but not really any cooling in the IR

There were some pretty big jumps and then decreases back down

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