Alert archive / Oklahoma / Mesoscale Discussions in 2020

Mesoscale Discussion 15

January 10, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2020, 1:44 PM CST for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jan 10, 2020, 1:44 PM CST (19:44 UTC)
Expired
Jan 10, 2020, 3:15 PM CST
In force
91 min
Issued by
the Storm Prediction Center
All 37 counties

Benton County, AR, Crawford County, AR, Washington County, AR, McDonald County, MO, Newton County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK, Delta County, TX, Fannin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Red River County, TX

The radar

The Western Arkansas radar (KSRX), 110 km from the middle of the area, began a volume at 19:48 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 12:00Z, 7.7 hours before the alert went out and 170 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.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2020-01-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 927 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2020-01-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 208 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
927 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
595 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
234 m²/s²
Significant tornado parameter
1.1
Supercell composite
5.1

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 10, 4:53 AM CSTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 19 more2 hr
Jan 10, 10:42 AM CSTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more10 hr
Jan 10, 4:55 PM CSTMesoscale DiscussionSPCArkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 61 more2 hr
Jan 10, 5:34 PM CSTTornado WatchSPCArkansas, Baxter, Boone, Bradley, Calhoun, Clark and 50 more11 hr
Jan 10, 12:11 PM CSTMesoscale DiscussionSPCBarton, Cedar, Dade, Greene, Hickory, Jasper and 4 more2 hr
Jan 10, 12:54 PM CSTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Clinton, Daviess, DeKalb and 9 more6 hr
Jan 10, 6:30 AM CSTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 13 more60 min
Jan 10, 7:44 AM CSTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Custer, Dewey, Garfield, Grant and 12 more67 days
Jan 10, 9:12 AM CSTMesoscale DiscussionSPCAlfalfa, Atoka, Blaine, Caddo, Canadian, Cherokee and 42 more93 min
Jan 10, 11:47 AM CSTMesoscale DiscussionSPCBryan, Choctaw118 min
Jan 10, 1:21 PM CSTMesoscale DiscussionSPCCaddo, Canadian, Comanche, Garfield, Grady, Grant and 2 more54 min
Jan 10, 1:20 PM CSTTornado WatchSPCAnderson, Bell, Bosque, Collin, Cooke, Coryell and 33 more11 hr
Jan 10, 2:52 PM CSTMesoscale DiscussionSPCAtascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 17 more113 min
Jan 10, 2:59 PM CSTMesoscale DiscussionSPCBosque, Collin, Dallas, Delta, Denton, Ellis and 13 more2 hr
Jan 10, 3:30 PM CSTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bastrop, Bee, Bexar, Blanco and 26 more68 days

Nearby

Mesoscale Discussions in Oklahoma, 2020Mesoscale Discussions in Texas, 2020Mesoscale Discussions in Arkansas, 2020Every mesoscale discussion in 2020

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.