Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 307, NWS Norman, OK

May 19, 20134 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 19, 2013, 6:17 PM CDT for 4 counties in Oklahoma. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 19, 2013, 6:17 PM CDT (23:17 UTC)
Expired: May 19, 2013, 7:00 PM CDT
In force: 43 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Cleveland County, OK, Lincoln County, OK, Oklahoma County, OK, Pottawatomie County, OK

The radar

The Norman radar (KTLX), 16 km from the middle of the area, began a volume at 23:18 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
May 19, 2:14 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 32 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: 2137 J/kg
Mixed-layer CIN: -325 J/kg
Mixed-layer LCL: 723 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 490 m²/s²
0-3 km storm-relative helicity: 490 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 19, 2:20 PM CDT, 3 hours 57 minutes earlier.

Area forecast discussion, May 19, 2:20 PM CDT, 3 hours 57 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
220 PM CDT SUN MAY 19 2013

.DISCUSSION...
ANOTHER BUSY AFTN AND EVENING EXPECTED ACROSS PARTS OF OKLAHOMA
AND WESTERN NORTH TEXAS WITH STRONG TO SEVERE STORMS. THE DRYLINE
CONT TO WORK TOWARD CENTRAL OKLAHOMA AND MOST SHORT RANGE MODELS
SHOW DEVELOPMENT MAINLY NEAR AND NORTH OF THE OKLAHOMA CITY METRO
THIS AFTN. 18Z SOUNDING CONT TO SHOW SIGNIFICANT CAPPING INVERSION
IN PLACE... WHICH IS EXPECTED TO KEEP STORM DEVELOPMENT ISOLATED.
HOWEVER WITH THE AMOUNT OF INSTABILITY PRESENT AND FAVORABLE WIND
FIELDS ANY STORMS THAT DO DEVELOP WILL LIKELY BECOME SEVERE.
STORMS SHOULD MOVE NORTH AND EAST OF THE AREA BY LATE EVENING WITH
MUCH OF THE OVERNIGHT RELATIVELY QUIET.

LATEST MODEL RUNS HAVE SHOWN A TREND OF BEING A BIT MORE
AGGRESSIVE WITH SOUTHWARD PUSH OF SFC FRONT INTO OR SOUTH OF THE
I-40 CORRIDOR TO NEAR I-44 BY MONDAY AFTN. THE MODELS ALSO SHOW
THE DRYINE ACTUALLY RETREATING BACK TO THE WEST. THIS WILL LEAVE
PORTIONS OF CENTRAL AND SOUTHERN OKLAHOMA IN THE WARM SECTOR FOR
TOMORROW WITH ANOTHER POTENTIAL DAY WITH SEVERE STORMS. FRONT WILL
THEN TRY TO MAKE ITS WAY SOUTH OF THE RED RIVER BRINGING A BIT
QUIETER WEATHER TO OKLAHOMA.

SOME LOW CHANCES FOR SHWR/TSTM ACTIVITY REMAIN IN THE FORECAST
THROUGH MUCH OF THE UPCOMING WEEK... HOWEVER SEVERE WEATHER AFTER
MONDAY WILL REMAIN RATHER LOW. AND PERHAPS SOME SLIGHTLY COOLER
TEMPS CAN BE EXPECTED... ESPECIALLY ACROSS FAR SOUTHWEST OKLAHOMA
AND WESTERN NORTH TEXAS.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  66  87  63  81 /  50  40  60  30
HOBART OK         63  92  60  83 /  10  20  30  20
WICHITA FALLS TX  69  97  66  85 /  20  40  40  20
GAGE OK           53  82  53  80 /  20  20  20  10
PONCA CITY OK     64  83  60  78 /  60  40  60  20
DURANT OK         71  88  69  83 /  30  50  60  50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR OKZ033-036-037.

TX...RED FLAG WARNING UNTIL 9 PM CDT THIS EVENING FOR TXZ083>089.

&&

09/30

Hazardous weather outlook, May 19, 1:43 PM CDT, 4 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
143 PM CDT SUN MAY 19 2013

OKZ004>048-050>052-TXZ083>090-201000-
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-
143 PM CDT SUN MAY 19 2013

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS PORTIONS OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE MODERATE RISK AREA IS GENERALLY EAST OF A LINE FROM MEDFORD...
TO ENID...TO EL RENO...TO LAWTON...AND NORTH OF A LINE FROM
LAWTON...TO PAULS VALLEY...TO SEMINOLE. A SLIGHT RISK SURROUNDS
THE MODERATE RISK AREA...AND IS GENERALLY EAST OF A LINE FROM
ARNETT...TO TALOGA...TO GRANDFIELD...TO SEYMOUR.

TIMING... THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS IS FROM 2 PM
UNTIL MIDNIGHT.

IMPACTS...
HAIL TO THE SIZE OF BASEBALLS AND WIND GUSTS TO MORE THAN 70 MPH
MAY OCCUR WITH THE STRONGER STORMS. TORNADOES WILL ALSO BE
POSSIBLE...ESPECIALLY IN THE AREA FROM NORTH OF OKLAHOMA CITY TO
MEDFORD AND PONCA CITY.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS FROM 2 PM UNTIL
MIDNIGHT.

DISCUSSION...
MUCH LIKE YESTERDAY...WARM...HUMID...AND VERY UNSTABLE CONDITIONS
ARE DEVELOPING OVER OKLAHOMA AND NORTH TEXAS THIS AFTERNOON. A FAIRLY
STRONG CAPPING INVERSION IS EXPECTED TO SUPPRESS THUNDERSTORM
DEVELOPMENT UNTIL EARLY AFTERNOON. BY MID-AFTERNOON...DAYTIME HEATING
IS FORECAST TO GREATLY WEAKEN THE INVERSION. A DRYLINE WILL MOVE
EAST FROM THE PANHANDLES INTO WESTERN OKLAHOMA AND TO CENTRAL
OKLAHOMA BY LATE AFTERNOON. CONVERGENCE ALONG THE DRYLINE...PLUS
SUPPORT FROM AN UPPER-LEVEL WAVE...SHOULD PUSH A FEW UPDRAFTS
THROUGH THE CAPPING INVERSION. THE STRONG INSTABILITY WILL RESULT IN
RAPID THUNDERSTORM DEVELOPMENT... AND WIND PROFILES WILL SUPPORT
ROTATING UPDRAFTS...PARTICULARLY WITHIN THE MODERATE RISK AREA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT MONDAY MAY 20.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...100 PERCENT.

OTHER HAZARDOUS WEATHER...
STRONG WINDS...LOW HUMIDITIES AND WARM TEMPERATURES WILL CAUSE VERY
HIGH TO EXTREME FIRE DANGER FOR PARTS OF THE AREA. A RED FLAG
WARNING IS IN EFFECT. PLEASE REFER TO THE LATEST VERSION OF THIS
PRODUCT FOR MORE INFORMATION.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORM OUTLOOK...
STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE AGAIN ON MONDAY AND
TUESDAY...MAINLY ACROSS THE EASTERN TWO THIRDS OF OKLAHOMA. THERE
WILL BE AT LEAST A SLIGHT CHANCE OF THUNDERSTORMS EACH DAY FROM
WEDNESDAY THROUGH SATURDAY.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
MONDAY.

In the hours before

Local storm report, May 19, 5:43 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
543 PM CDT SUN MAY 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0542 PM     HAIL             2 W NORMAN              35.22N 97.48W
05/19/2013  E1.50 INCH       CLEVELAND          OK   PUBLIC

&&

JPIKE

Local storm report, May 19, 5:45 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
545 PM CDT SUN MAY 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0540 PM     HAIL             NEWCASTLE               35.25N 97.60W
05/19/2013  E1.75 INCH       MCCLAIN            OK   PUBLIC

&&

JPIKE

Local storm report, May 19, 5:49 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
549 PM CDT SUN MAY 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0547 PM     HAIL             NW NORMAN               35.22N 97.44W
05/19/2013  E2.50 INCH       CLEVELAND          OK   PUBLIC

            36TH AVE NW AND TECUMSEH RD

&&

JPIKE

Local storm report, May 19, 5:54 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
554 PM CDT SUN MAY 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 PM     HAIL             2 SE WILL ROGERS AIRPOR 35.37N 97.57W
05/19/2013  E1.00 INCH       CLEVELAND          OK   PUBLIC

&&

JPIKE

Local storm report, May 19, 6:01 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
601 PM CDT SUN MAY 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0601 PM     TORNADO          NW LAKE THUNDERBIRD     35.23N 97.23W
05/19/2013                   CLEVELAND          OK   BROADCAST MEDIA

            FROM KWTV

&&

JPIKE

Local storm report, May 19, 6:17 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
617 PM CDT SUN MAY 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0611 PM     TORNADO          E LAKE THUNDERBIRD      35.23N 97.23W
05/19/2013                   CLEVELAND          OK   BROADCAST MEDIA

            FROM KWTV

&&

JPIKE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 7:00 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon, Jackson	45 min
May 18, 7:26 PM CDT	Areal Flood Advisory	OUN	Jackson, Kiowa, Washita	3 hr
May 18, 7:29 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Greer, Kiowa, Washita	46 min
May 18, 7:53 PM CDT	Special Weather Statement	OUN	Canadian	37 min
May 18, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	49 min
May 18, 8:02 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	43 min
May 18, 8:12 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa, Washita	48 min
May 18, 8:15 PM CDT	Special Weather Statement	OUN	Custer	15 min
May 18, 8:22 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	38 min
May 18, 8:31 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	29 min
May 18, 8:39 PM CDT	Special Weather Statement	OUN	Alfalfa, Dewey, Garfield, Grant, Major, Woods and 1 more	51 min
May 18, 8:43 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	47 min
May 18, 8:49 PM CDT	High Wind Warning	OUN	Alfalfa, Dewey, Garfield, Grant, Kay, Major and 2 more	3 hr
May 18, 8:56 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Jackson, Kiowa, Tillman	34 min
May 18, 9:02 PM CDT	Flash Flood Warning	OUN	Kiowa	3 hr
May 18, 9:05 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	40 min
May 18, 9:31 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady, Jackson, Kiowa, Tillman and 1 more	44 min
May 18, 11:04 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Stephens	41 min
May 18, 11:08 PM CDT	Special Weather Statement	OUN	Lincoln, Pottawatomie, Seminole	37 min
May 18, 11:15 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Pottawatomie, Seminole	45 min
May 18, 11:35 PM CDT	Special Weather Statement	OUN	Major	25 min
May 18, 11:43 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woodward	47 min
May 19, 12:07 AM CDT	Special Weather Statement	OUN	Hughes, Seminole	23 min
May 19, 12:29 AM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woodward	46 min
May 19, 12:33 AM CDT	Special Weather Statement	OUN	Blaine	27 min
May 19, 1:11 AM CDT	Special Weather Statement	OUN	Garfield, Major	64 min
May 19, 2:12 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	33 min
May 19, 4:20 AM CDT	Red Flag Warning	OUN	Harmon, Jackson, Tillman	17 hr
May 19, 2:31 PM CDT	Special Weather Statement	OUN	Woods	29 min
May 19, 2:48 PM CDT	Special Weather Statement	OUN	Canadian	27 min
May 19, 3:00 PM CDT	Special Weather Statement	OUN	Woods	30 min
May 19, 3:17 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	43 min
May 19, 3:19 PM CDT	Special Weather Statement	OUN	Canadian	26 min
May 19, 3:21 PM CDT	Special Weather Statement	OUN	Harper	24 min
May 19, 3:25 PM CDT	Severe Thunderstorm Warning	OUN	Grant	35 min
May 19, 3:31 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	44 min
May 19, 3:40 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	50 min
May 19, 3:42 PM CDT	Tornado Warning	OUN	Canadian, Logan, Oklahoma	33 min
May 19, 3:54 PM CDT	Special Weather Statement	OUN	Grady	36 min
May 19, 4:00 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	45 min
May 19, 4:07 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	53 min
May 19, 4:11 PM CDT	Tornado Warning	OUN	Oklahoma	34 min
May 19, 4:16 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	44 min
May 19, 4:33 PM CDT	Severe Thunderstorm Warning	OUN	Logan	27 min
May 19, 4:36 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	39 min
May 19, 4:43 PM CDT	Tornado Warning	OUN	Lincoln, Oklahoma	32 min
May 19, 4:50 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	40 min
May 19, 4:51 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	39 min
May 19, 4:57 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	63 min
May 19, 4:58 PM CDT	Tornado Warning	OUN	Lincoln	32 min
May 19, 5:12 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	48 min
May 19, 5:21 PM CDT	Tornado Warning	OUN	Cleveland, McClain	24 min
May 19, 5:30 PM CDT	Tornado Warning	OUN	Lincoln, Payne	30 min
May 19, 5:40 PM CDT	Tornado Warning	OUN	Cleveland, McClain	35 min
May 19, 6:00 PM CDT	Severe Thunderstorm Warning	OUN	Kay	45 min
May 19, 6:01 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	44 min
May 19, 6:03 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	42 min
May 19, 6:08 PM CDT	Tornado Warning	OUN	Lincoln	37 min
May 19, 6:29 PM CDT	Tornado Warning	OUN	Pottawatomie	46 min
May 19, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	18 min
May 19, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	45 min
May 19, 6:59 PM CDT	Tornado Warning	OUN	Lincoln, Pottawatomie	31 min
May 18, 7:51 PM CDT	Special Weather Statement	OUN	Foard, Hardeman	24 min
May 18, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	49 min
May 18, 8:01 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	44 min
May 18, 8:45 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	45 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013 Every severe thunderstorm warning in 2013

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.