Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 798, NWS Norman, OK

August 22, 2019Lincoln County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 22, 2019, 7:44 PM CDT for Lincoln County, Oklahoma. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 22, 2019, 7:44 PM CDT (00:44 UTC)
Expired
Aug 22, 2019, 8:30 PM CDT
In force
46 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

County Lincoln County, OK

The radar

The Norman radar (KTLX), 55 km from the middle of the area, began a volume at 00:48 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 00:00Z, 0.7 hours before the alert went out and 71 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 00:00Z on 2019-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 177 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 00:00Z on 2019-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.1939Sfc1 km3 km6 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
177 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
1390 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 22, 3:07 PM CDT, 4 hours 37 minutes earlier.

Area forecast discussion, Aug 22, 3:07 PM CDT, 4 hours 37 minutes before
Area Forecast Discussion
National Weather Service Norman OK
307 PM CDT Thu Aug 22 2019

.DISCUSSION...
Scattered to numerous showers and thunderstorms have recently
develop across parts of western north Texas. Temperatures have
climbed well into 90s across this area including parts of southern
Oklahoma. The stronger cores this afternoon will have the
potential to produce strong/damaging winds and heavy rainfall. The
storms have generally formed near a surface boundary that extends
into southwest and central Oklahoma. Therefore, in the short term,
it appears the southern part of the Marginal Risk area has a
better chance of experiencing severe storms. The convection along
the boundary this afternoon will mainly dissipate this evening.

A shortwave trough extends from southwest Kansas into southern
Nebraska. This feature is expected to move slowly east and south
through Friday. Some showers and storms have develop over
northwestern Oklahoma this afternoon, but have mainly moved into
Kansas. A few models suggest more development will occur mainly
over north central and central Oklahoma later this evening as low
level winds increase. Not total sure this will happen at least
across north central/central Oklahoma. However, north central
Oklahoma is somewhat vulnerable to flooding, especially if
widespraed showers and storms develop. PW values remain rather
high and storms will be rather efficient rain producers.

A trough currently moving across parts of Idaho and Montana will
continue east and south through the first half of the weekend.
Thunderstorms should form along the higher terrain Friday
afternoon and evening and impact at least northern and western
Oklahoma Friday night into Saturday morning. Additional showers
and storms should form late Saturday into Sunday as the shortwave
trough move across the central and southern Plains.

Mainly dry weather is expected for the second half of Sunday
into much of Monday. On Monday, very hot and humid conditions are
likely, especially southern Oklahoma and north Texas. Heat
headlines may be required. A cold front is expected to move across
the area late Monday into Tuesday. This will bring another chance
of rain and obviously cooler temperatures. A stronger cold front
is expected around Thursday of next week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  71  87  70  87 /  50  50  40  50
Hobart OK         72  94  70  92 /  40  40  50  50
Wichita Falls TX  75  94  72  94 /  30  30  40  40
Gage OK           68  92  65  89 /  30  20  60  50
Ponca City OK     70  85  68  82 /  60  40  50  40
Durant OK         73  89  73  91 /  30  40  40  50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&
Hazardous weather outlook, Aug 22, 12:08 PM CDT, 7 hours 36 minutes before
Hazardous Weather Outlook
National Weather Service Norman OK
1208 PM CDT Thu Aug 22 2019

OKZ004>048-050>052-TXZ083>090-231130-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1208 PM CDT Thu Aug 22 2019

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...Today and Tonight...

.Thunderstorms...
Scattered to numerous thunderstorms are expected this afternoon
and evening. Isolated strong to severe thunderstorms are possible
with the primary hazard being damaging wind gusts. Thunderstorms
will also produce locally heavy rainfall that could result in
some flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

.Thunderstorms...
Scattered to numerous thunderstorms are expected to continue on
Friday and Saturday. Isolated strong thunderstorms are possible
with the primary hazard being gusty winds. Heavy rainfall that
could lead to localized flooding is also possible.

The chance for thunderstorms returns late Monday into Tuesday of
next week.

.Heat...
Afternoon heat indices of 100 to 110 degrees will possible once
again next Sunday and Monday.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Local storm report, Aug 22, 5:34 PM CDT, 2 hours 10 minutes before
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Special weather statement, Aug 22, 5:40 PM CDT, 2 hours 4 minutes before
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Special weather statement, Aug 22, 6:01 PM CDT, 1 hour 43 minutes before
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Local storm report, Aug 22, 6:10 PM CDT, 1 hour 34 minutes before
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Special weather statement, Aug 22, 6:13 PM CDT, 1 hour 31 minutes before
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Local storm report, Aug 22, 6:36 PM CDT, 1 hour 8 minutes before
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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 22, 7:23 PM CDTSpecial Weather StatementOUNLincoln37 min
Aug 22, 7:30 PM CDTSpecial Weather StatementOUNLincoln30 min
Aug 22, 7:45 PM CDTAreal Flood AdvisoryOUNOklahoma3 hr
Aug 22, 7:52 PM CDTSpecial Weather StatementOUNLincoln38 min
Aug 22, 8:26 PM CDTSpecial Weather StatementOUNPayne34 min
Aug 22, 11:29 PM CDTSpecial Weather StatementOUNCanadian16 min
Aug 23, 12:16 AM CDTSpecial Weather StatementOUNGrady29 min
Aug 23, 5:05 AM CDTAreal Flood AdvisoryOUNPayne4 hr
Aug 23, 6:02 AM CDTAreal Flood AdvisoryOUNMurray118 min
Aug 23, 6:10 AM CDTAreal Flood AdvisoryOUNLincoln, Payne2 hr
Aug 23, 7:25 AM CDTSpecial Weather StatementOUNJohnston, Marshall35 min
Aug 23, 7:53 AM CDTAreal Flood WarningOUNLincoln, Payne3 hr
Aug 23, 8:02 AM CDTSpecial Weather StatementOUNPottawatomie28 min
Aug 23, 8:06 AM CDTSpecial Weather StatementOUNMarshall24 min
Aug 23, 8:48 AM CDTSpecial Weather StatementOUNPottawatomie27 min
Aug 23, 8:55 AM CDTAreal Flood AdvisoryOUNPottawatomie2 hr
Aug 23, 9:54 AM CDTAreal Flood AdvisoryOUNHughes, Pontotoc, Pottawatomie, Seminole3 hr
Aug 23, 10:19 AM CDTAreal Flood AdvisoryOUNBryan, Carter, Johnston, Love, Marshall3 hr
Aug 23, 10:25 AM CDTAreal Flood WarningOUNPottawatomie, Seminole3 hr
Aug 23, 11:33 AM CDTAreal Flood AdvisoryOUNCarter, Coal, Johnston, Murray, Pontotoc3 hr
Aug 23, 1:56 PM CDTSpecial Weather StatementOUNClay34 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019Every severe thunderstorm warning in 2019

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.