Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

June 6, 2021Caddo County, Oklahoma

NWS Norman, OK issued this special weather statement at Jun 6, 2021, 2:49 PM CDT for Caddo County, Oklahoma. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 6, 2021, 2:49 PM CDT (19:49 UTC)
Expired: Jun 6, 2021, 3:15 PM CDT
In force: 26 min
Issued by: NWS Norman, OK

County Caddo County, OK

The radar

The Norman radar (KTLX), 86 km from the middle of the area, began a volume at 19:49 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

Fort Worth, TX (KFWD), launched 12:00Z, 7.8 hours before the alert went out and 274 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 644 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 604 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 6, 2:22 PM CDT, 27 minutes earlier.

Area forecast discussion, Jun 6, 2:22 PM CDT, 27 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Jun 6, 11:51 AM CDT, 2 hours 58 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
1151 AM CDT Sun Jun 6 2021

OKZ004>048-050>052-TXZ083>090-071700-
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-
1151 AM CDT Sun Jun 6 2021

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

.DAY ONE...Through Tonight...

.Thunderstorms...
There is a Marginal Risk of severe thunderstorms this afternoon
and tonight across approximately the southern half of Oklahoma
and all of western north Texas.

Isolated strong to severe thunderstorms are possible this afternoon
with a lull in thunderstorms expected during most of the evening.
Scattered to numerous thunderstorms, some potentially strong to
severe, are expected to redevelop late this evening into the
overnight hours.

The primary severe weather hazards will be hail up to the size of
half dollars and wind gusts of 60 to 70 mph. In addition, locally
heavy rainfall is possible. Thunderstorms may cause localized
flooding with high rainfall rates and slow movement.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel should
prepare for severe weather operations through tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

.Thunderstorms...
Scattered thunderstorms will continue and redevelop on Monday with
thunderstorm chances continuing through Tuesday. The potential for
severe weather will be low on Monday and Tuesday.

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

Mahale

In the hours before

Special weather statement, Jun 6, 1:46 PM CDT, 1 hour 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
146 PM CDT Sun Jun 6 2021

OKZ023-027-061930-
Grady OK-Caddo OK-
146 PM CDT Sun Jun 6 2021

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Grady and east
central Caddo Counties Until 230 PM CDT...

AT 144 PM CDT, a strong thunderstorm was located near Lake Chickasha,
moving east at 5 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...
Heavy rain can lead to reduced visibility...

Locations impacted include...
Lake Chickasha.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3507 9822 3521 9824 3530 9803 3519 9798
      3510 9799
TIME...MOT...LOC 1844Z 256DEG 6KT 3515 9817

Mahale

Special weather statement, Jun 6, 2:49 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
249 PM CDT Sun Jun 6 2021

OKZ023-027-062015-
Grady OK-Caddo OK-
249 PM CDT Sun Jun 6 2021

...SIGNIFICANT WEATHER ADVISORY FOR west central Grady and east
central Caddo Counties Until 315 PM CDT...

AT 245 PM CDT, a strong thunderstorm was located near Gracemont,
moving northeast at 10 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3508 9824 3517 9834 3535 9821 3520 9797
TIME...MOT...LOC 1945Z 220DEG 7KT 3517 9823

30

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 1:46 PM CDT	Special Weather Statement	OUN	Caddo	44 min
Jun 6, 3:13 PM CDT	Special Weather Statement	OUN	Cleveland	47 min
Jun 6, 3:14 PM CDT	Special Weather Statement	OUN	Major	31 min
Jun 6, 3:19 PM CDT	Special Weather Statement	OUN	Blaine	41 min
Jun 6, 3:20 PM CDT	Special Weather Statement	OUN	Pottawatomie	25 min
Jun 6, 3:31 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	29 min
Jun 6, 3:39 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian	51 min
Jun 6, 3:45 PM CDT	Special Weather Statement	OUN	Oklahoma	45 min
Jun 6, 3:55 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Garfield, Kingfisher, Major	50 min
Jun 6, 3:57 PM CDT	Special Weather Statement	OUN	Blaine	48 min
Jun 6, 3:59 PM CDT	Special Weather Statement	OUN	Canadian	31 min
Jun 6, 4:05 PM CDT	Areal Flood Advisory	OUN	Blaine	3 hr
Jun 6, 4:08 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	35 min
Jun 6, 4:12 PM CDT	Special Weather Statement	OUN	Pontotoc	48 min
Jun 6, 4:14 PM CDT	Special Weather Statement	OUN	Carter, Murray	61 min
Jun 6, 4:19 PM CDT	Areal Flood Advisory	OUN	Oklahoma	3 hr
Jun 6, 4:32 PM CDT	Flash Flood Warning	OUN	Oklahoma	3 hr
Jun 6, 4:37 PM CDT	Special Weather Statement	OUN	Kingfisher	38 min
Jun 6, 4:38 PM CDT	Special Weather Statement	OUN	Marshall	37 min
Jun 6, 4:41 PM CDT	Areal Flood Advisory	OUN	Carter, Love, Murray	3 hr
Jun 6, 5:14 PM CDT	Special Weather Statement	OUN	Kingfisher	31 min
Jun 6, 5:14 PM CDT	Special Weather Statement	OUN	Johnston	31 min
Jun 6, 5:15 PM CDT	Special Weather Statement	OUN	Oklahoma	45 min
Jun 6, 5:27 PM CDT	Special Weather Statement	OUN	Johnston	63 min
Jun 6, 5:38 PM CDT	Special Weather Statement	OUN	Coal	67 min
Jun 6, 5:45 PM CDT	Special Weather Statement	OUN	Lincoln	30 min
Jun 6, 5:48 PM CDT	Special Weather Statement	OUN	Lincoln	57 min
Jun 6, 5:55 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Coal, Johnston, Marshall	3 hr
Jun 6, 6:13 PM CDT	Flash Flood Warning	OUN	Atoka, Johnston	3 hr
Jun 6, 6:29 PM CDT	Special Weather Statement	OUN	Atoka	61 min

Nearby

Special Weather Statements in Oklahoma, 2021 Every special weather statement in 2021

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.