Alert archive / Oklahoma / Special Weather Statements in 2021
Special Weather Statement, NWS Norman, OK
NWS Norman, OK issued this special weather statement at Jul 1, 2021, 1:23 PM CDT for Pottawatomie County, Oklahoma. It was in force for 37 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
- Jul 1, 2021, 1:23 PM CDT (18:23 UTC)
- Expired
- Jul 1, 2021, 2:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Norman, OK
County Pottawatomie County, OK
The radar
The Norman radar (KTLX), 34 km from the middle of the area, began a volume at 18:24 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
Springfield, MO (KSGF), launched 12:00Z, 6.4 hours before the alert went out and 331 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
- 789 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
The text
As transmitted.
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</html>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 Jul 1, 12:44 PM CDT, 39 minutes earlier.
Area forecast discussion, Jul 1, 12:44 PM CDT, 39 minutes before
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</html>Hazardous weather outlook, Jul 1, 1:06 PM CDT, 17 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 106 PM CDT Thu Jul 1 2021 OKZ004>048-050>052-TXZ083>090-021815- 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- 106 PM CDT Thu Jul 1 2021 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... Thunderstorm are ongoing and will continue this afternoon and tonight as a cold front moves southward across the area. A few strong storms are possible this afternoon and evening along the front. .Heavy Rain... Thunderstorms with heavy rain, especially in areas where the ground is saturated, could lead to flooding in some locations through tonight. .DAYS TWO THROUGH SEVEN...Friday through Wednesday... .Thunderstorms... Storm chances gradually shift southward into southern Oklahoma and western north Texas by Friday into the weekend. At least a low chance for thunderstorms will return early next week across portions of the area. .Heavy Rain... Because of saturated ground across much of the area, a risk for flooding will continue through Friday, especially across southwest Oklahoma and portions of western north Texas. 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, Jul 1, 12:53 PM CDT, 30 minutes before
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</html>Special weather statement, Jul 1, 1:23 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 123 PM CDT Thu Jul 1 2021 OKZ030-031-011900- Pottawatomie OK-Seminole OK- 123 PM CDT Thu Jul 1 2021 ...SIGNIFICANT WEATHER ADVISORY FOR northwestern Pottawatomie and northwestern Seminole Counties Until 200 PM CDT... AT 119 PM CDT, a strong thunderstorm was located over Shawnee, moving southeast at 30 MPH. HAZARDS INCLUDE... Wind gusts to 50 MPH... Minor flooding in areas of poor drainage... Heavy rain can lead to reduced visibility... LAT...LON 3532 9709 3545 9696 3530 9662 3512 9679 TIME...MOT...LOC 1819Z 302DEG 24KT 3529 9690 Maxwell
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 8:47 AM CDT | River Flood Advisory | OUN | Blaine, Caddo, Canadian, Custer | 37 hr |
| Jul 1, 12:07 PM CDT | Areal Flood Advisory | OUN | Canadian, Cleveland, Lincoln, Oklahoma, Pottawatomie | 3 hr |
| Jul 1, 12:38 PM CDT | Areal Flood Advisory | OUN | Woods | 3 hr |
| Jul 1, 1:02 PM CDT | Areal Flood Advisory | OUN | Garfield, Grant | 3 hr |
| Jul 1, 1:27 PM CDT | Areal Flood Advisory | OUN | Pottawatomie, Seminole | 3 hr |
| Jul 1, 1:31 PM CDT | Areal Flood Advisory | OUN | Blaine, Canadian, Kingfisher | 3 hr |
| Jul 1, 1:36 PM CDT | Areal Flood Advisory | OUN | Cleveland, McClain, Pottawatomie | 3 hr |
| Jul 1, 1:37 PM CDT | Special Weather Statement | OUN | Canadian | 38 min |
| Jul 1, 2:18 PM CDT | Flash Flood Warning | OUN | Canadian, Kingfisher, Logan, Oklahoma | 6 hr |
| Jul 1, 2:23 PM CDT | Areal Flood Advisory | OUN | Logan | 5 hr |
| Jul 1, 2:51 PM CDT | Special Weather Statement | OUN | Logan | 24 min |
| Jul 1, 3:34 PM CDT | Flash Flood Warning | OUN | Logan | 3 hr |
| Jul 1, 3:42 PM CDT | Special Weather Statement | OUN | Oklahoma | 33 min |
| Jul 1, 3:52 PM CDT | Flash Flood Warning | OUN | Canadian, Cleveland, Grady, McClain, Oklahoma | 3 hr |
| Jul 1, 4:23 PM CDT | Flash Flood Warning | OUN | Caddo, Cleveland, Comanche, Garvin, Grady, McClain | 3 hr |
| Jul 1, 4:50 PM CDT | Areal Flood Advisory | OUN | Lincoln, Pottawatomie | 3 hr |
| Jul 1, 5:39 PM CDT | Areal Flood Advisory | OUN | Stephens | 3 hr |
| Jul 1, 5:43 PM CDT | Areal Flood Advisory | OUN | Garvin, Stephens | 3 hr |
| Jul 1, 5:46 PM CDT | River Flood Advisory | OUN | Lincoln, Oklahoma, Pottawatomie | 9 hr |
Nearby
Special Weather Statements in Oklahoma, 2021Every 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.