Alert archive / Oklahoma / Special Weather Statements in 2021
Special Weather Statement, NWS Norman, OK
NWS Norman, OK issued this special weather statement at Aug 9, 2021, 5:34 AM CDT for Payne County, Oklahoma. It was in force for 26 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 9, 2021, 5:34 AM CDT (10:34 UTC)
- Expired
- Aug 9, 2021, 6:00 AM CDT
- In force
- 26 min
- Issued by
- NWS Norman, OK
- Hail
- 0.88 in
- Wind
- 50
County Payne County, OK
The radar
The Norman radar (KTLX), 70 km from the middle of the area, began a volume at 10:34 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 9, 5:37 AM CDT | HAIL 0.7 | 4 N Tryon, OK | MPING REPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 10.6 hours before the alert went out and 302 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
- 2779 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1238 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.1
The text
As transmitted.
280
WWUS84 KOUN 091034
SPSOUN
Special Weather Statement
National Weather Service Norman OK
534 AM CDT Mon Aug 9 2021
OKZ020-026-091100-
Payne OK-Lincoln OK-
534 AM CDT Mon Aug 9 2021
...A strong thunderstorm will impact portions of northern Lincoln and
southeastern Payne Counties through 600 AM CDT...
At 533 AM CDT, Doppler radar was tracking a strong thunderstorm near
Tryon, moving east at 25 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Cushing, Perkins, Tryon, Ripley, Agra, Avery and Parkland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3582 9709 3596 9713 3606 9672 3583 9667
TIME...MOT...LOC 1033Z 260DEG 21KT 3589 9702
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
$$
11The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 5:11 AM CDT | Special Weather Statement | OUN | Payne | 34 min |
| Aug 9, 2:30 PM CDT | Heat Advisory | OUN | Alfalfa, Atoka, Blaine, Bryan, Canadian, Carter and 26 more | 30 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.