Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 821, NWS Norman, OK

October 4, 2016Cleveland County, McClain County, Oklahoma County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 4, 2016, 7:55 PM CDT for Cleveland County, McClain County, Oklahoma County, Oklahoma. It was in force for 50 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: Oct 4, 2016, 7:55 PM CDT (00:55 UTC)
Expired: Oct 4, 2016, 8:45 PM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Cleveland County, OK, McClain County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 17 km from the middle of the area, began a volume at 00:59 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 4, 3:40 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.9 hours before the alert went out and 18 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: 1817 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 235 m²/s²
0-3 km storm-relative helicity: 312 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 14.8

Open this sounding in Storm Lab

The text

As transmitted.

428 
WUUS54 KOUN 050055
SVROUN
OKC027-087-109-050145-
/O.NEW.KOUN.SV.W.0821.161005T0055Z-161005T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
755 PM CDT TUE OCT 4 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN OKLAHOMA COUNTY IN CENTRAL OKLAHOMA...
  NORTHWESTERN MCCLAIN COUNTY IN CENTRAL OKLAHOMA...
  NORTHERN CLEVELAND COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 845 PM CDT

* AT 754 PM CDT...THE LEADING EDGE OF A SEVERE THUNDERSTORM WAS
  LOCATED 5 MILES SOUTH OF MUSTANG...MOVING EAST-NORTHEAST AT 40 MPH.

  HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
           DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
           WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  OKLAHOMA CITY...NORTHERN NORMAN...MOORE...MIDWEST CITY...
  DEL CITY...NEWCASTLE...CHOCTAW...HARRAH...SPENCER...JONES...
  NICOMA PARK...VALLEY BROOK...STANLEY DRAPER LAKE...
  TINKER AIR FORCE BASE...STELLA...NEWALLA...
  NORTHERN LAKE THUNDERBIRD...FOREST PARK...
  LAKE ALUMA AND SMITH VILLAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3525 9767 3546 9767 3563 9714 3529 9714
TIME...MOT...LOC 0054Z 250DEG 36KT 3532 9768 

HAIL...1.50IN
WIND...60MPH
 
$$

..SPEG.

2 follow-up statements

654 
WWUS54 KOUN 050116
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
816 PM CDT TUE OCT 4 2016

OKC027-087-109-050145-
/O.CON.KOUN.SV.W.0821.000000T0000Z-161005T0145Z/
OKLAHOMA OK-MCCLAIN OK-CLEVELAND OK-
816 PM CDT TUE OCT 4 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHERN OKLAHOMA...NORTHWESTERN MCCLAIN AND NORTHERN CLEVELAND
COUNTIES...

AT 815 PM CDT...THE LEADING EDGE OF A LARGE SEVERE THUNDERSTORM WAS
LOCATED OVER SOUTHWESTERN OKLAHOMA CITY...OR 4 MILES SOUTHWEST OF
WILL ROGERS AIRPORT...MOVING EAST-NORTHEAST AT 35 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT
         WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
OKLAHOMA CITY...NORTHERN NORMAN...MOORE...MIDWEST CITY...DEL CITY...
NEWCASTLE...CHOCTAW...HARRAH...SPENCER...JONES...NICOMA PARK...
VALLEY BROOK...STANLEY DRAPER LAKE...TINKER AIR FORCE BASE...
STELLA...NORTHERN LAKE THUNDERBIRD...FOREST PARK...
LAKE ALUMA AND SMITH VILLAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3525 9767 3546 9767 3561 9721 3529 9717
TIME...MOT...LOC 0115Z 252DEG 31KT 3534 9764 

HAIL...1.50IN
WIND...60MPH
 
$$

..SPEG.

727 
WWUS54 KOUN 050131
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
831 PM CDT TUE OCT 4 2016

OKC027-087-109-050145-
/O.CON.KOUN.SV.W.0821.000000T0000Z-161005T0145Z/
OKLAHOMA OK-MCCLAIN OK-CLEVELAND OK-
831 PM CDT TUE OCT 4 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN OKLAHOMA...NORTHWESTERN MCCLAIN AND NORTHWESTERN
CLEVELAND COUNTIES...

AT 830 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SOUTHWESTERN
OKLAHOMA CITY...OR 5 MILES WEST OF MOORE...MOVING EAST-NORTHEAST AT
15 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT
         WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
SOUTHERN OKLAHOMA CITY...WESTERN NORMAN...MOORE...MIDWEST CITY...DEL
CITY...NEWCASTLE...SPENCER...VALLEY BROOK...TINKER AIR FORCE BASE...
STANLEY DRAPER LAKE AND SMITH VILLAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3525 9767 3542 9767 3550 9736 3528 9732
TIME...MOT...LOC 0130Z 254DEG 13KT 3535 9758 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

..SPEG.

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 4, 7:08 PM CDT	Special Weather Statement	OUN	Garfield	52 min
Oct 4, 7:13 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	47 min
Oct 4, 7:27 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	48 min
Oct 4, 7:35 PM CDT	Flash Flood Warning	OUN	Grant	3 hr
Oct 4, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	48 min
Oct 4, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	49 min
Oct 4, 8:02 PM CDT	Areal Flood Advisory	OUN	Garfield, Major	3 hr
Oct 4, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	21 min
Oct 4, 8:21 PM CDT	Severe Thunderstorm Warning	OUN	Kay	69 min
Oct 4, 8:23 PM CDT	Areal Flood Advisory	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	3 hr
Oct 4, 8:37 PM CDT	Flash Flood Warning	OUN	Garfield, Major	38 min
Oct 4, 8:44 PM CDT	Areal Flood Advisory	OUN	Garfield, Grant, Kay, Noble	2 hr
Oct 4, 8:44 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	46 min
Oct 4, 8:45 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	45 min
Oct 4, 8:52 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	38 min
Oct 4, 9:07 PM CDT	Flash Flood Warning	OUN	Garfield, Major	83 min
Oct 4, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	46 min
Oct 4, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	45 min
Oct 4, 9:31 PM CDT	Flash Flood Warning	OUN	Kay	3 hr
Oct 4, 9:31 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma	44 min
Oct 4, 9:33 PM CDT	Special Weather Statement	OUN	Kay	27 min
Oct 4, 9:47 PM CDT	Special Weather Statement	OUN	Garvin	28 min
Oct 4, 9:59 PM CDT	Special Weather Statement	OUN	Cleveland, McClain	31 min
Oct 4, 10:12 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	48 min
Oct 4, 10:14 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan, Noble	46 min
Oct 4, 10:15 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	45 min
Oct 4, 10:18 PM CDT	Areal Flood Warning	OUN	Grant, Kay	3 hr
Oct 4, 10:19 PM CDT	Special Weather Statement	OUN	Noble	26 min
Oct 4, 10:26 PM CDT	Special Weather Statement	OUN	McClain	34 min
Oct 4, 10:30 PM CDT	Areal Flood Warning	OUN	Garfield, Major	6 hr
Oct 4, 10:38 PM CDT	Flash Flood Warning	OUN	Garfield, Noble	4 hr
Oct 4, 10:49 PM CDT	Areal Flood Advisory	OUN	Garfield, Noble	3 hr
Oct 4, 11:01 PM CDT	Special Weather Statement	OUN	Noble	29 min
Oct 4, 11:06 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Pottawatomie	39 min
Oct 4, 11:09 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie, Seminole	52 min
Oct 4, 11:27 PM CDT	Areal Flood Advisory	OUN	Lincoln, Pottawatomie, Seminole	3 hr
Oct 4, 11:32 PM CDT	Special Weather Statement	OUN	Noble	43 min
Oct 4, 11:43 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	47 min
Oct 5, 12:02 AM CDT	Special Weather Statement	OUN	Okfuskee	28 min
Oct 5, 12:12 AM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	50 min
Oct 5, 12:28 AM CDT	Severe Thunderstorm Warning	OUN	Hughes, Seminole	62 min
Oct 5, 1:29 AM CDT	Severe Thunderstorm Warning	OUN	Hughes	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2016 Every severe thunderstorm warning in 2016

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.