Alert archive / Oklahoma / Tornado Warnings in 2008

Tornado Warning 39, NWS Norman, OK

May 7, 2008Oklahoma County, Oklahoma

NWS Norman, OK issued this tornado warning at May 7, 2008, 5:20 PM CDT for Oklahoma County, Oklahoma. It was in force for 36 min. 2 reports 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
May 7, 2008, 5:20 PM CDT (22:20 UTC)
Expired
May 7, 2008, 5:56 PM CDT
In force
36 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

County Oklahoma County, OK

The radar

The Norman radar (KTLX), 34 km from the middle of the area, began a volume at 22:23 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

TimeReportWhereRemark
May 7, 5:22 PM CDTTORNADO5 Nnw The Village, OKEF0 TORNADO. 2.8 MILE LENGTH. 20 YARDS WIDE. DEVELOPED NEAR NORTHWEST 164TH AND MAY AVENUE AND MOVED SOUTHEAST ENDING NEAR MEMORIAL ROAD AND WESTERN AVENUE.
May 7, 5:30 PM CDTTSTM WND GST 592 Ene Nichols Hills, OKWEST WIND MEASURED GUST OF 59 MPH. MESONET STATION ALSO MEASURED A NORTH-NORTHWEST WIND GUST OF 58 MPH AT 535 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
May 7, 1:33 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 10.3 hours before the alert went out and 111 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-pSkew-T log-p diagram, Lamont, OK at 12:00Z on 2008-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1715 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lamont, OK at 12:00Z on 2008-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1715 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
612 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.8
Supercell composite
5.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KOUN 072222
TOROUN
OKC109-072315-
/O.NEW.KOUN.TO.W.0039.080507T2220Z-080507T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
520 PM CDT WED MAY 7 2008

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  OKLAHOMA COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 615 PM CDT

* AT 520 PM CDT...A LARGE AREA OF THUNDERSTORMS WITH A HISTORY OF 
PRODUCING TORNADOES WAS LOCATED OVER NORTHERN OKLAHOMA CITY...MOVING 
EAST AT 20 MPH. BRIEF TORNADOES MAY QUICKLY FORM FROM THIS AREA OF 
STORMS. STRAIGHT LINE WIND DAMAGE IS ALSO LIKELY.

* LOCATIONS IN THE WARNING INCLUDE ARCADIA...EDMOND...FOREST PARK...
  HARRAH...JONES...LAKE ALUMA...LUTHER...NICHOLS HILLS...NICOMA
  PARK...NORTHEASTERN OKLAHOMA CITY...SPENCER...THE VILLAGE AND WARR
  ACRES.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

LAT...LON 3573 9718 3549 9717 3548 9761 3572 9761
TIME...MOT...LOC 2220Z 263DEG 18KT 3560 9756

$$
2 follow-up statements
000 
WWUS54 KOUN 072247
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
544 PM CDT WED MAY 7 2008

OKC109-072315-
/O.CON.KOUN.TO.W.0039.000000T0000Z-080507T2315Z/
OKLAHOMA OK-
544 PM CDT WED MAY 7 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
NORTHEASTERN OKLAHOMA COUNTY...

AT 544 PM CDT...A LARGE GROUP OF THUNDERSTORMS WITH A HISTORY OF 
PRODUCING TORNADOES WAS LOCATED OVER FAR SOUTHEAST EDMOND...MOVING EAST 
AT 20 MPH. THE CIRCULATION WITH THESE STORMS HAS WEAKENED 
SOMEWHAT...BUT ADDITIONAL STRENGTHENING IS POSSIBLE THROUGH 615 PM 
AND BRIEF TORNADOES COULD RAPIDLY FORM.

* LOCATIONS IN THE WARNING INCLUDE ARCADIA...EDMOND...FOREST PARK...
  JONES...LAKE ALUMA...LUTHER...NORTHEASTERN OKLAHOMA CITY AND
  SPENCER.

THIS TORNADO IS LIKELY OBSCURED BY RAIN AND MAY NOT BE VISIBLE.
ABANDON MOBILE HOMES AND VEHICLES. IF POSSIBLE... MOVE TO A BASEMENT
OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR HALLWAY ON
THE LOWEST FLOOR. STAY AWAY FROM WINDOWS.

LAT...LON 3573 9718 3550 9717 3549 9747 3572 9752
TIME...MOT...LOC 2244Z 263DEG 18KT 3561 9741

$$
000 
WWUS54 KOUN 072256
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
555 PM CDT WED MAY 7 2008

OKC109-072305-
/O.CAN.KOUN.TO.W.0039.000000T0000Z-080507T2315Z/
OKLAHOMA OK-
555 PM CDT WED MAY 7 2008

...THE TORNADO WARNING HAS BEEN CANCELLED FOR OKLAHOMA COUNTY...

THE STORM HAS WEAKENED AND THE THREAT OF TORNADOES HAS DIMINISHED IN 
OKLAHOMA COUNTY.

LAT...LON 3573 9718 3550 9717 3549 9747 3572 9752
TIME...MOT...LOC 2255Z 263DEG 18KT 3562 9734

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 11:48 PM CDTSevere Thunderstorm WarningOUNTillman42 min
May 7, 12:58 AM CDTHigh Wind WarningOUNGreer, Harmon, Jackson, Kiowa71 min
May 7, 2:58 AM CDTSevere Thunderstorm WarningOUNJackson, Kiowa, Tillman47 min
May 7, 3:31 AM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Tillman44 min
May 7, 3:52 AM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Grady38 min
May 7, 4:12 AM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Grady, Stephens21 min
May 7, 5:44 AM CDTSevere Thunderstorm WarningOUNCleveland, Garvin, Grady, McClain, Pottawatomie, Stephens46 min
May 7, 6:38 AM CDTSevere Thunderstorm WarningOUNJohnston, Lincoln, Pottawatomie, Seminole52 min
May 7, 6:41 AM CDTSevere Thunderstorm WarningOUNLincoln, Pottawatomie, Seminole23 min
May 7, 10:19 AM CDTAreal Flood AdvisoryOUNOklahoma116 min
May 7, 12:13 PM CDTRiver Flood WarningOUNPottawatomie, Seminole22 hr
May 7, 2:24 PM CDTSevere Thunderstorm WarningOUNJefferson, Stephens51 min
May 7, 2:55 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray65 min
May 7, 3:32 PM CDTSevere Thunderstorm WarningOUNCleveland, McClain, Oklahoma, Pottawatomie43 min
May 7, 3:37 PM CDTAreal Flood AdvisoryOUNBlaine, Caddo3 hr
May 7, 3:37 PM CDTSevere Thunderstorm WarningOUNJefferson38 min
May 7, 3:40 PM CDTSevere Thunderstorm WarningOUNComanche40 min
May 7, 4:03 PM CDTAreal Flood AdvisoryOUNCanadian, Oklahoma3 hr
May 7, 4:05 PM CDTSevere Thunderstorm WarningOUNStephens40 min
May 7, 4:10 PM CDTSevere Thunderstorm WarningOUNLove65 min
May 7, 4:23 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray52 min
May 7, 4:33 PM CDTSevere Thunderstorm WarningOUNCanadian, Grady42 min
May 7, 4:55 PM CDTSevere Thunderstorm WarningOUNCanadian, Cleveland, Oklahoma50 min
May 7, 5:05 PM CDTTornado WarningOUNOklahoma25 min
May 7, 5:08 PM CDTFlash Flood WarningOUNCanadian, Oklahoma3 hr
May 7, 5:14 PM CDTSevere Thunderstorm WarningOUNCarter, Coal, Johnston, Love, Marshall, Murray and 1 more61 min
May 7, 5:33 PM CDTSevere Thunderstorm WarningOUNCleveland, Pottawatomie42 min
May 7, 5:39 PM CDTAreal Flood AdvisoryOUNCleveland, Pottawatomie2 hr
May 7, 5:39 PM CDTTornado WarningOUNLincoln, Pottawatomie, Seminole31 min
May 7, 5:45 PM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Coal, Johnston, Marshall60 min
May 7, 6:07 PM CDTAreal Flood AdvisoryOUNLogan3 hr
May 7, 6:08 PM CDTSevere Thunderstorm WarningOUNHughes52 min
May 7, 6:12 PM CDTSevere Thunderstorm WarningOUNLincoln48 min
May 7, 6:16 PM CDTSevere Thunderstorm WarningOUNCoal, Johnston, Pontotoc30 min
May 7, 6:36 PM CDTFlash Flood WarningOUNLogan3 hr

Nearby

Tornado Warnings in Oklahoma, 2008Every tornado warning in 2008Tornadoes in 2008

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.