SPC MD 2143



MD 2143 CONCERNING FREEZING RAIN FOR PORTIONS OF FAR EAST-CENTRAL NM…NORTHWEST TX INTO THE TX PANHANDLE…AND WESTERN OK

MD 2143 Image

Mesoscale Discussion 2143
NWS Storm Prediction Center Norman OK
0322 AM CST Thu Nov 07 2019

Areas affected...Portions of far east-central NM...northwest TX into
the TX Panhandle...and western OK

Concerning...Freezing rain 

Valid 070922Z - 071515Z

SUMMARY...Light freezing rain, with rates occasionally exceeding
0.05 inch per 3 hours, may occur through 15Z (9 AM CST/8 AM MST).

DISCUSSION...A shallow, arctic cold front will continue southward
across the southern Plains early this morning. Surface temperatures
rapidly decrease behind this front, with recent mesoanalysis and OK
Mesonet sensors estimating/observing 10 to 15 degrees F drops in the
past 3 hours from eastern NM, across the TX Panhandle, and into much
of OK. The surface wetbulb freezing line will also shift southward
this morning across this region as strong low-level cold air
advection continues. A devolving upper trough/low evident in
satellite imagery over AZ/NM will continue eastward across the
southern High Plains over the next several hours. Large-scale ascent
associated with this shortwave trough may support continued
light/showery post-frontal precipitation through much of the
morning. As a shallow warm nose aloft persists, some of these
showers could produce light freezing rain, as shown by recent
surface observations in Gage OK and Borger TX. Freezing-rain rates
will probably remain fairly light, but some chance for rates in
excess of 0.05 inch per 3 hours may exist. A somewhat greater
potential may be maximized in two almost separate areas: from
east-central NM into the southern TX Panhandle/northwest TX just
north of the cold front in closer proximity to the shortwave trough,
and in northwestern OK with ongoing light precipitation.

..Gleason.. 11/07/2019

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...OUN...LUB...AMA...ABQ...

LAT...LON   34100249 34180347 34530388 34770412 34930385 35130297
            35510189 36130066 36530014 36899961 36999915 36959845
            36719802 36299801 35899826 35419878 34899973 34270142
            34100249 

Read more



Source link