Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 615, NWS Norman, OK

July 30, 2013Canadian County, Kingfisher County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 30, 2013, 12:00 AM CDT for Canadian County, Kingfisher County, Oklahoma. It was in force for 45 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: Jul 30, 2013, 12:00 AM CDT (05:00 UTC)
Expired: Jul 30, 2013, 12:45 AM CDT
In force: 45 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Canadian County, OK, Kingfisher County, OK

The radar

The Norman radar (KTLX), 77 km from the middle of the area, began a volume at 05:00 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
Jul 29, 10:41 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 5.0 hours before the alert went out and 77 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: 2590 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 856 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 292 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 13.9

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 Jul 29, 11:52 PM CDT, 8 minutes earlier.

Area forecast discussion, Jul 29, 11:52 PM CDT, 8 minutes before

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Hazardous weather outlook, Jul 29, 11:46 PM CDT, 14 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
1146 PM CDT MON JUL 29 2013

OKZ004>048-050>052-TXZ083>090-301100-
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-
1146 PM CDT MON JUL 29 2013

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

.DAY ONE...REST OF TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THE REST OF
TONIGHT ACROSS MUCH OF OKLAHOMA.

LOCATION...
THE SLIGHT RISK AREA IS SOUTH OF A GAGE TO WOODWARD TO PONCA CITY
LINE AND NORTH OF THE RED RIVER.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE THROUGH
5 AM TUESDAY MORNING.

IMPACTS...
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS
UP TO 65 MPH AND HAIL UP TO THE SIZE OF HALF DOLLARS. EXTREME RAINFALL
OF 1 TO 3 INCHES AND FLASH FLOODING WILL ACCOMPANY THE STORMS AS WELL.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS THROUGH AT
LEAST 5 AM TUESDAY MORNING.

DISCUSSION...
A LINE OF STRONG TO SEVERE STORMS WILL CONTINUE TO PUSH SOUTHEAST
THROUGHOUT THE NIGHT...AFFECTING MAINLY THE SOUTHERN TWO THIRDS OF
OKLAHOMA. BOWING SEGMENTS WILL ENHANCE WIND POTENTIAL IN SOME AREAS.
TRAINING OF STORMS WILL CAUSE VERY HEAVY RAINFALL AND FLASH FLOODING.

AN UNSEASONABLY STRONG LOW LEVEL JET IN CONJUNCTION WITH RESIDUAL
INSTABILITY WILL PROLONG STRONG TO SEVERE STORMS THROUGHOUT THE NIGHT
AND ALSO AID IN VERY HEAVY RAINFALL PRODUCTION. THE OVERALL SEVERE
THREAT SHOULD GRADUALLY DIMINISH AFTER 5 AM...THOUGH STRONG STORMS
AND HEAVY RAIN MAY CONTINUE DURING THE MORNING HOURS ON TUESDAY
ACROSS CENTRAL OR SOUTHERN OKLAHOMA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY JUL 30.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...80 PERCENT.

OTHER HAZARDOUS WEATHER...
RECENT HEAVY RAINS HAVE LEFT THE GROUND NEARLY SATURATED. WITH
ANOTHER ROUND OF HEAVY RAINFALL EXPECTED OVER PARTS OF THE AREA...
LOCALIZED FLASH FLOODING MAY OCCUR IN OKLAHOMA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL BE POSSIBLE ACROSS PARTS OF THE AREA TUESDAY
THROUGH WEDNESDAY NIGHT...THEN ACROSS MAINLY NORTHERN OKLAHOMA THURSDAY
THROUGH SUNDAY. WIDESPREAD SEVERE STORMS ARE UNLIKELY BEYOND TUESDAY
MORNING.

OTHER HAZARDOUS WEATHER...
FLASH FLOOD POTENTIAL WILL LINGER INTO TUESDAY AFTERNOON...AS HEAVY
RAIN WILL REMAIN POSSIBLE OVER PARTS OF THE AREA.

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

AUSTIN/30/II/MBS

In the hours before

Local storm report, Jul 29, 10:18 PM CDT, 1 hour 42 minutes before

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Special weather statement, Jul 29, 10:27 PM CDT, 1 hour 33 minutes before

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Special weather statement, Jul 29, 10:40 PM CDT, 1 hour 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1040 PM CDT MON JUL 29 2013

OKZ017>020-023>026-300415-
LOGAN OK-OKLAHOMA OK-LINCOLN OK-KINGFISHER OK-BLAINE OK-CADDO OK-
PAYNE OK-CANADIAN OK-
1040 PM CDT MON JUL 29 2013

...SIGNIFICANT WEATHER ADVISORY FOR LOGAN...OKLAHOMA...LINCOLN...
KINGFISHER...BLAINE...NORTHEASTERN CADDO...PAYNE AND CANADIAN
COUNTIES UNTIL 1115 PM CDT...

AT 1038 PM CDT...THE LEADING EDGE OF AN AREA OF STRONG
WINDS...FOLLOWED BY STRONG THUNDERSTORMS...WAS ALONG A LINE
EXTENDING FROM CUSHING TO GUTHRIE TO OKARCHE TO GEARY...MOVING SOUTH
AT 25 MPH. STRONG WINDS WILL AFFECT STILLWATER...GUTHRIE...OKLAHOMA
CITY...KINGFISHER...AND SURROUNDING AREAS THROUGH AT LEAST 1115 PM.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3616 9682 3615 9663 3588 9662 3550 9663
      3536 9833 3593 9844 3616 9725 3616 9715
      3618 9714 3624 9682
TIME...MOT...LOC 0338Z 340DEG 21KT 3592 9677 3562 9827

CMS

Local storm report, Jul 29, 11:04 PM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1104 PM CDT MON JUL 29 2013

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

1040 PM     TSTM WND GST     GAGE                    36.32N 99.76W
07/29/2013  M61 MPH          ELLIS              OK   ASOS

&&

DWILLIAM

Local storm report, Jul 29, 11:14 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1114 PM CDT MON JUL 29 2013

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

1105 PM     TSTM WND GST     7 W WATONGA             35.85N 98.54W
07/29/2013  M60 MPH          BLAINE             OK   MESONET

&&

DW

Special weather statement, Jul 29, 11:36 PM CDT, 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1136 PM CDT MON JUL 29 2013

OKZ014>016-021-022-300515-
ROGER MILLS OK-CUSTER OK-DEWEY OK-WASHITA OK-BECKHAM OK-
1136 PM CDT MON JUL 29 2013

...SIGNIFICANT WEATHER ADVISORY FOR ROGER MILLS...CUSTER...SOUTHERN
DEWEY...WASHITA AND NORTHEASTERN BECKHAM COUNTIES UNTIL 1215 AM
CDT...

AT 1132 PM CDT...A SERIES OF STRONG THUNDERSTORMS EXTENDED FROM
WATONGA...TO PUTNAM...TO CAMARGO...TO THE ANTELOPE HILLS. THE
INDIVIDUAL STORMS WERE MOVING SOUTHEAST AT 35 MPH...WHILE THE AREA
OF STORMS SHIFTED SLOWLY TOWARD THE SOUTH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3577 9999 3589 9944 3588 9865 3510 9862
      3513 9865 3511 9868 3550 10000
TIME...MOT...LOC 0432Z 302DEG 29KT 3577 9863

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 7:01 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	44 min
Jul 29, 7:03 PM CDT	Special Weather Statement	OUN	Harper	27 min
Jul 29, 7:21 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	24 min
Jul 29, 7:23 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woodward	52 min
Jul 29, 7:29 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	46 min
Jul 29, 7:57 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	48 min
Jul 29, 8:05 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods, Woodward	40 min
Jul 29, 8:43 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods, Woodward	47 min
Jul 29, 8:47 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woodward	43 min
Jul 29, 9:10 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant, Woods	3 hr
Jul 29, 9:28 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major	47 min
Jul 29, 9:32 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	43 min
Jul 29, 9:37 PM CDT	Special Weather Statement	OUN	Woodward	38 min
Jul 29, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey, Major	47 min
Jul 29, 10:17 PM CDT	Areal Flood Advisory	OUN	Ellis, Garfield, Major, Noble, Woods, Woodward	3 hr
Jul 29, 10:20 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	40 min
Jul 29, 10:27 PM CDT	Special Weather Statement	OUN	Dewey	48 min
Jul 29, 10:40 PM CDT	Special Weather Statement	OUN	Blaine, Canadian, Kingfisher, Lincoln, Logan, Oklahoma and 1 more	35 min
Jul 29, 10:59 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Kingfisher	46 min
Jul 29, 11:17 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Kingfisher	43 min
Jul 29, 11:23 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	52 min
Jul 29, 11:36 PM CDT	Special Weather Statement	OUN	Custer, Roger Mills, Washita	39 min
Jul 29, 11:47 PM CDT	Areal Flood Advisory	OUN	Blaine, Garfield, Kingfisher, Lincoln, Logan, Major and 2 more	3 hr
Jul 29, 11:55 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma, Payne	50 min
Jul 30, 12:17 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Dewey, Roger Mills, Washita	43 min
Jul 30, 12:39 AM CDT	Special Weather Statement	OUN	Cleveland, Grady, McClain	51 min
Jul 30, 12:40 AM CDT	Flash Flood Warning	OUN	Kingfisher, Logan, Payne	3 hr
Jul 30, 12:49 AM CDT	Special Weather Statement	OUN	Oklahoma	41 min
Jul 30, 12:59 AM CDT	Areal Flood Advisory	OUN	Canadian, Grady, Oklahoma	3 hr
Jul 30, 12:59 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Dewey, Roger Mills, Washita	46 min
Jul 30, 1:02 AM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	43 min
Jul 30, 1:44 AM CDT	Special Weather Statement	OUN	Custer, Washita	46 min
Jul 30, 2:03 AM CDT	Areal Flood Advisory	OUN	Beckham, Custer, Dewey, Ellis, Roger Mills, Washita	117 min
Jul 30, 2:11 AM CDT	Special Weather Statement	OUN	Washita	34 min
Jul 30, 2:36 AM CDT	Areal Flood Advisory	OUN	Cleveland, Grady, Hughes, Lincoln, McClain, Oklahoma and 2 more	3 hr
Jul 30, 2:58 AM CDT	River Flood Warning	OUN	Dewey, Major, Woodward	5 hr
Jul 30, 4:02 AM CDT	Areal Flood Advisory	OUN	Beckham, Kiowa, Roger Mills, Washita	3 hr
Jul 30, 8:40 AM CDT	River Flood Warning	OUN	Major, Woods, Woodward	6 hr
Jul 30, 5:09 PM CDT	Special Weather Statement	OUN	Hughes	51 min
Jul 30, 6:47 PM CDT	Special Weather Statement	OUN	Hughes
Jul 30, 6:54 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Pontotoc	51 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.