Alert archive / Oklahoma / Tornado Watches in 2013

Tornado Watch 188

May 19, 2013Benton County, Crawford County, Washington County, Arkansas; 25 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at May 19, 2013, 10:44 PM CDT for Benton County, Crawford County, Washington County, Arkansas; 25 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 19, 2013, 10:44 PM CDT (03:44 UTC)
Expired
May 20, 2013, 3:36 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 28 counties

Benton County, AR, Crawford County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Kay County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 40 km from the middle of the area, began a volume at 03:48 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
30%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 19, 10:44 PM CDTSevere Thunderstorm WarningTSAOsage46 min
May 19, 11:04 PM CDTFlash Flood WarningTSAOsage4 hr
May 19, 11:31 PM CDTSevere Thunderstorm WarningTSAOsage44 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 3.7 hours before the alert went out and 141 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, Lamont, OK at 00:00Z on 2013-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1603 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, Lamont, OK at 00:00Z on 2013-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 square meters per square second.19395878Sfc1 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
1603 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
1367 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 20, 12:26 PM CDTMesoscale DiscussionSPCBenton, Washington2 hr
May 20, 1:10 PM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more9 hr
May 20, 6:53 PM CDTMesoscale DiscussionSPCBaxter, Boone, Cleburne, Conway, Franklin, Fulton and 16 more67 min
May 19, 7:13 PM CDTMesoscale DiscussionSPCClark62 min
May 19, 7:55 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Clay, Clinton, DeKalb and 4 more65 min
May 19, 8:10 PM CDTTornado WatchSPCClark, Scotland6 hr
May 19, 10:16 PM CDTMesoscale DiscussionSPCAdair, Audrain, Barry, Barton, Bates, Benton and 52 more59 min
May 19, 11:49 PM CDTMesoscale DiscussionSPCBarry, Barton, Camden, Cedar, Christian, Dade and 17 more56 min
May 20, 8:46 AM CDTMesoscale DiscussionSPCBates, Benton, Cass, Henry, Jackson, Johnson and 4 more59 min
May 20, 12:46 PM CDTTornado WatchSPCBarry, Barton, Bates, Benton, Boone, Callaway and 41 more8 hr
May 20, 3:27 PM CDTMesoscale DiscussionSPCAudrain, Lincoln, Marion, Monroe, Montgomery, Pike and 2 more63 min
May 20, 5:07 PM CDTMesoscale DiscussionSPCAudrain, Crawford, Franklin, Gasconade, Lincoln, Marion and 8 more23 min
May 20, 5:24 PM CDTTornado WatchSPCAudrain, Boone, Callaway, Clark, Cole, Crawford and 20 more7 hr
May 20, 5:38 PM CDTMesoscale DiscussionSPCAndrew, DeKalb, Gentry, Harrison, Worth67 min
May 19, 8:53 PM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Canadian, Carter, Cherokee and 48 more67 min
May 20, 2:44 AM CDTMesoscale DiscussionSPCCraig, Delaware, Mayes, Nowata, Osage, Ottawa and 3 more2 hr
May 20, 2:31 PM CDTMesoscale DiscussionSPCCraig, Creek, Lincoln, Logan, Nowata, Okfuskee and 7 more119 min
May 20, 5:34 PM CDTMesoscale DiscussionSPCLove56 min
May 20, 6:33 PM CDTMesoscale DiscussionSPCBryan, Johnston, Love, Marshall57 min

Nearby

Tornado Watches in Oklahoma, 2013Tornado Watches in Arkansas, 2013Every tornado watch in 2013

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.