Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 459, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jul 14, 2018, 3:14 PM CDT for Oklahoma County, Oklahoma. It was in force for 23 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
- Jul 14, 2018, 3:14 PM CDT (20:14 UTC)
- Expired
- Jul 14, 2018, 3:37 PM CDT
- In force
- 23 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Oklahoma County, OK
The radar
The Norman radar (KTLX), 27 km from the middle of the area, began a volume at 20:13 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 12:00Z, 8.2 hours before the alert went out and 37 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
- 260 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1662 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 Jul 14, 2:42 PM CDT, 32 minutes earlier.
Area forecast discussion, Jul 14, 2:42 PM CDT, 32 minutes before
Area Forecast Discussion National Weather Service Norman OK 242 PM CDT Sat Jul 14 2018 .DISCUSSION... Showers and thunderstorms will continue to develop and move across parts of the area the rest of this afternoon into Sunday. Differential heating due to cloud cover today will aid in development this afternoon. Other boundaries and an upper wave will also aid in storm development the rest of this afternoon into tomorrow. Strong winds, small hail, and very heavy rain will be the main concerns. Models show generally NW/N flow developing over the region for the first half of next week with rain chances gradually shifting N and E of the fa by the middle of next week as the upper high strengthens over the western U.S. There will be a chance rain could clip NE/Far E portions of the fa the middle of next week before rain chances end for the rest of the week. Models also show that a frontal boundary could move into parts of the area Monday which could help in storm development. Another frontal boundary could also move into the region Thursday but this front is currently expected to remain dry. Models show that the the region will be influenced more by the upper high the latter half of next week leading to hotter temperatures and the dry forecast. Even though heat is a concern over the next few days, with hotter temperatures next week, the heat is expected to become even more of a problem for the area. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 75 96 75 97 / 30 30 20 30 Hobart OK 75 98 76 99 / 30 20 20 20 Wichita Falls TX 75 99 76 102 / 20 20 10 10 Gage OK 71 97 71 95 / 30 20 20 40 Ponca City OK 75 96 74 95 / 40 30 30 20 Durant OK 76 97 76 99 / 20 10 10 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && 17/25
Hazardous weather outlook, Jul 14, 12:00 PM CDT, 3 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 1200 PM CDT Sat Jul 14 2018 OKZ004>048-050>052-TXZ083>090-151700- 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- 1200 PM CDT Sat Jul 14 2018 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...This Afternoon and Tonight... .Thunderstorms... Scattered thunderstorms are expected again today. A few storms may produce strong wind gusts up to 60 mph, small hail, and very heavy rainfall which may result in localized flooding. .Heat... Heat index values will reach triple digits across north Texas and southern Oklahoma and the upper 90s across northern Oklahoma today. .DAYS TWO THROUGH SEVEN...Sunday through Friday... .Heat... Temperatures and heat index values are expected to be even higher next week. Heat index values will be over 105 and may approach 110 in some areas on Wednesday and Thursday afternoon. .Thunderstorms... The chances of thunderstorms will continue through Wednesday, although storms are not expected to be widespread. The strongest storms will be capable of producing strong and gusty winds as well as locally heavy rainfall. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook. MBS
In the hours before
Special weather statement, Jul 14, 1:58 PM CDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 158 PM CDT SAT JUL 14 2018 TXZ090-141930- Clay TX- 158 PM CDT SAT JUL 14 2018 ...SIGNIFICANT WEATHER ADVISORY FOR southeastern Clay County Until 230 PM CDT.... AT 155 PM CDT, a strong thunderstorm was located near Newport, moving north at 5 MPH. HAZARDS INCLUDE... Wind gusts to 50 MPH... Heavy rain can lead to reduced visibility... Locations impacted include... Newport and Vashti. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. && LAT...LON 3359 9804 3361 9798 3347 9798 3347 9811 TIME...MOT...LOC 1855Z 197DEG 4KT 3352 9801 MBS
Special weather statement, Jul 14, 2:02 PM CDT, 1 hour 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 202 PM CDT SAT JUL 14 2018 OKZ025-141930- Oklahoma OK- 202 PM CDT SAT JUL 14 2018 ...SIGNIFICANT WEATHER ADVISORY FOR central Oklahoma County Until 230 PM CDT.... AT 200 PM CDT, a strong thunderstorm was located over northeastern Oklahoma City, moving northeast at 10 MPH. HAZARDS INCLUDE... Wind gusts to 50 MPH... Heavy rain can lead to reduced visibility... Locations impacted include... Northeastern Oklahoma City, southeastern Edmond, Midwest City, Del City, Spencer, Jones, Forest Park and Lake Aluma. This includes the following highways... Interstate 35 between mile markers 130 and 140. Interstate 44 between mile markers 127 and 142. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. && LAT...LON 3546 9744 3553 9753 3567 9738 3557 9724 TIME...MOT...LOC 1900Z 228DEG 9KT 3557 9740 MBS
Special weather statement, Jul 14, 2:26 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
226 PM CDT SAT JUL 14 2018
OKZ025-142000-
Oklahoma OK-
226 PM CDT SAT JUL 14 2018
...SIGNIFICANT WEATHER ADVISORY FOR eastern Oklahoma County Until 300
PM CDT....
AT 224 PM CDT, a strong thunderstorm was located over northeastern
Oklahoma City, moving southeast at 10 MPH.
HAZARDS INCLUDE...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...
Locations impacted include...
Northeastern Oklahoma City, southeastern Edmond, Midwest City,
Choctaw, Harrah, Spencer, Jones, Nicoma Park and Arcadia.
This includes the following highways...
Interstate 40 near mile marker 161.
Interstate 44 between mile markers 139 and 148.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 3554 9741 3566 9736 3564 9717 3542 9725
3542 9735
TIME...MOT...LOC 1924Z 297DEG 8KT 3552 9733
MBSSpecial weather statement, Jul 14, 2:38 PM CDT, 36 minutes before
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</html>Local storm report, Jul 14, 2:59 PM CDT, 15 minutes before
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<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 7:32 PM CDT | Special Weather Statement | OUN | Kiowa | 28 min |
| Jul 13, 8:14 PM CDT | Special Weather Statement | OUN | Kiowa | 31 min |
| Jul 13, 10:19 PM CDT | Special Weather Statement | OUN | Comanche | 41 min |
| Jul 14, 2:03 AM CDT | Special Weather Statement | OUN | Grant | 27 min |
| Jul 14, 2:02 PM CDT | Special Weather Statement | OUN | Oklahoma | 28 min |
| Jul 14, 2:26 PM CDT | Special Weather Statement | OUN | Oklahoma | 34 min |
| Jul 14, 2:38 PM CDT | Special Weather Statement | OUN | Cleveland | 37 min |
| Jul 14, 2:45 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 30 min |
| Jul 14, 4:00 PM CDT | Special Weather Statement | OUN | Roger Mills | 30 min |
| Jul 14, 4:27 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Dewey, Roger Mills | 26 min |
| Jul 14, 4:51 PM CDT | Special Weather Statement | OUN | Custer | 24 min |
| Jul 14, 5:32 PM CDT | Special Weather Statement | OUN | Custer, Dewey, Greer | 28 min |
| Jul 14, 6:13 PM CDT | Special Weather Statement | OUN | Custer | 17 min |
| Jul 14, 6:16 PM CDT | Special Weather Statement | OUN | Tillman | 29 min |
| Jul 14, 6:21 PM CDT | Special Weather Statement | OUN | Comanche | 24 min |
| Jul 14, 6:42 PM CDT | Severe Thunderstorm Warning | OUN | Comanche | 36 min |
| Jul 14, 6:51 PM CDT | Special Weather Statement | OUN | Grady | 24 min |
| Jul 14, 1:58 PM CDT | Special Weather Statement | OUN | Clay | 32 min |
| Jul 14, 4:32 PM CDT | Special Weather Statement | OUN | Archer | 28 min |
| Jul 14, 5:40 PM CDT | Special Weather Statement | OUN | Baylor | 35 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2018Every severe thunderstorm warning in 2018
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.