Alert archive / Texas / Mesoscale Discussions in 2022
Mesoscale Discussion 113
The Storm Prediction Center issued this mesoscale discussion at Feb 2, 2022, 7:11 PM CST for 8 counties in Arkansas; 8 counties in Oklahoma; 40 counties in Texas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 2, 2022, 7:11 PM CST (01:11 UTC)
- Expired
- Feb 2, 2022, 11:15 PM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Freezing rain
All 56 counties
Crawford County, AR, Franklin County, AR, Logan County, AR, Montgomery County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Yell County, AR, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Bosque County, TX, Brown County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Concho County, TX, Cooke County, TX, Crockett County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Irion County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, San Saba County, TX, Schleicher County, TX, Somervell County, TX, Sutton County, TX, Tarrant County, TX, Tom Green County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 46 km from the middle of the area, began a volume at 01:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 1.2 hours before the alert went out and 249 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 574 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
352
ACUS11 KWNS 030112
SWOMCD
SPC MCD 030111
ARZ000-TXZ000-OKZ000-030515-
Mesoscale Discussion 0113
NWS Storm Prediction Center Norman OK
0711 PM CST Wed Feb 02 2022
Areas affected...portions of central into northern Texas...southeast
Oklahoma...western Arkansas
Concerning...Freezing rain
Valid 030111Z - 030515Z
SUMMARY...Freezing rain is ongoing across the region, and a few
instances of .10 inches/1 hour ice accretion rates are possible
going into the evening hours. The best chance for the heavier
freezing rain rates will be across northeast Texas into southwest
Arkansas.
DISCUSSION...Recent surface observations have noted accumulating
freezing rain across northern Texas over the past couple of hours.
Surface observations and 00Z mesoanalysis shows the surface freezing
line/web-bulb zero temperatures situated roughly from Crockett
County Texas, to areas just north of the DFW Metroplex, into the
Bryan-Le Flore County OK region. Surface-925 mb cold-air advection
is expected to gradually support the east-southeastward drift of
these near/below freezing surface temperatures with time, promoting
freezing rain (at least initially) across portions of southwest into
north-central TX, eastern OK, and western AR over the next 3-6 hours
(up to 06Z). MRMS mosaic radar imagery depicts up to 35-40 dBZ
values in close proximity to the surface freezing line in northern
Texas, which is overspread by above-freezing temperatures in the
925-700 mb layer per 00Z mesoanalysis. As such, occasionally heavier
freezing rain/ice accretion rates (perhaps up to 0.10 inch/1 hour)
may accompany heavier precipitation bands. However, deeper layers of
below-freezing temperatures are expected to usher into
central/northern TX and eastern OK through the evening, fostering a
more wintry mix (including sleet).
..Squitieri.. 02/03/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LZK...SHV...TSA...FWD...OUN...SJT...MAF...
LAT...LON 30960233 31789978 33389765 34379617 35359508 35709429
35449348 35329330 34629347 33619483 32509623 31989706
31019899 30350087 30400189 30960233SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 2, 10:47 PM CST | Mesoscale Discussion | SPC | Crawford, Sebastian | 4 hr |
| Feb 2, 11:53 PM CST | Mesoscale Discussion | SPC | Clark, Cleburne, Conway, Faulkner, Franklin, Garland and 25 more | 6 hr |
| Feb 3, 2:03 AM CST | Mesoscale Discussion | SPC | Benton, Boone, Carroll | 6 hr |
| Feb 3, 2:21 AM CST | Mesoscale Discussion | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Greene and 9 more | 6 hr |
| Feb 2, 6:25 PM CST | Mesoscale Discussion | SPC | Adair, Caddo, Canadian, Carter, Cherokee, Cleveland and 37 more | 4 hr |
Nearby
Mesoscale Discussions in Texas, 2022Mesoscale Discussions in Arkansas, 2022Mesoscale Discussions in Oklahoma, 2022Every mesoscale discussion in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.