Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 21, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Mar 6, 2017, 9:31 PM CST for Cleveland County, Oklahoma County, Oklahoma. It was in force for 30 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
- Mar 6, 2017, 9:31 PM CST (03:31 UTC)
- Expired
- Mar 6, 2017, 10:01 PM CST
- In force
- 30 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cleveland County, OK, Oklahoma County, OK
The radar
The Norman radar (KTLX), 13 km from the middle of the area, began a volume at 03:30 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, 3.5 hours before the alert went out and 9 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
- 951 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1724 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 338 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 8.4
The text
As transmitted.
773
WUUS54 KOUN 070331
SVROUN
OKC027-109-070415-
/O.NEW.KOUN.SV.W.0021.170307T0331Z-170307T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
931 PM CST MON MAR 6 2017
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southeastern Oklahoma County in central Oklahoma...
Northern Cleveland County in central Oklahoma...
* Until 1015 PM CST
* At 930 PM CST, severe thunderstorms were located along a line
extending from southeastern Oklahoma City to near Newcastle,
moving east-northeast at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Southeastern Oklahoma City, Norman, Moore, Midwest City, Choctaw,
Harrah, Stanley Draper Lake, Stella, Newalla, Lake Thunderbird,
Tinker Air Force Base and Little Axe.
This includes the following highways...
Interstate 35 between mile markers 108 and 118.
Interstate 40 between mile markers 160 and 173.
Interstate 240 between mile markers 8 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of
a building.
&&
LAT...LON 3519 9750 3524 9756 3527 9756 3530 9757
3545 9735 3555 9714 3524 9714
TIME...MOT...LOC 0330Z 258DEG 37KT 3543 9730 3524 9755
HAIL...1.00IN
WIND...60MPH
$$
..speg.1 follow-up statement
491
WWUS54 KOUN 070401
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
1001 PM CST MON MAR 6 2017
OKC027-109-070410-
/O.CAN.KOUN.SV.W.0021.000000T0000Z-170307T0415Z/
Oklahoma OK-Cleveland OK-
1001 PM CST MON MAR 6 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OKLAHOMA AND
NORTHERN CLEVELAND COUNTIES IS CANCELLED...
The original storms which prompted the warning have moved out of the
warned area. Therefore the warning has been cancelled. However,
strong thunderstorms continue across east and south Norman toward
Noble and Dibble. Small hail is occurring with these storms and
severe weather may develop again.
LAT...LON 3519 9750 3524 9756 3527 9756 3530 9757
3545 9735 3555 9714 3524 9714
TIME...MOT...LOC 0358Z 258DEG 37KT 3549 9695 3530 9720
$$
..speg.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 6:03 PM CST | Special Weather Statement | OUN | Harper | 42 min |
| Mar 6, 8:47 PM CST | Special Weather Statement | OUN | Payne | 28 min |
| Mar 6, 8:52 PM CST | Severe Thunderstorm Warning | OUN | Payne | 38 min |
| Mar 6, 9:01 PM CST | Severe Thunderstorm Warning | OUN | Lincoln | 44 min |
| Mar 6, 9:05 PM CST | Severe Thunderstorm Warning | OUN | Lincoln, Oklahoma | 40 min |
| Mar 6, 9:07 PM CST | Special Weather Statement | OUN | Cleveland | 38 min |
| Mar 6, 9:39 PM CST | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie | 51 min |
| Mar 6, 10:09 PM CST | Special Weather Statement | OUN | Cleveland, McClain, Pottawatomie | 36 min |
| Mar 6, 10:20 PM CST | Severe Thunderstorm Warning | OUN | Cleveland, Pottawatomie, Seminole | 40 min |
| Mar 6, 11:27 PM CST | Special Weather Statement | OUN | Hughes | 33 min |
| Mar 7, 12:47 AM CST | Special Weather Statement | OUN | Coal | 28 min |
| Mar 7, 1:11 AM CST | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Coal, Johnston, Marshall | 49 min |
| Mar 7, 1:49 AM CST | Special Weather Statement | OUN | Marshall | 11 min |
| Mar 7, 1:54 AM CST | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Marshall | 38 min |
| Mar 7, 11:51 AM CST | Fire Weather Watch | OUN | Alfalfa, Beckham, Blaine, Canadian, Custer, Dewey and 15 more | 9 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2017Every severe thunderstorm warning in 2017
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.