Alert archive / Oklahoma / Tornado Warnings in 2004

Tornado Warning 8, NWS Shreveport, LA

May 30, 2004McCurtain County, Oklahoma

NWS Shreveport, LA issued this tornado warning at May 30, 2004, 5:09 PM CDT for McCurtain County, Oklahoma. It was in force for 66 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: May 30, 2004, 5:09 PM CDT (22:09 UTC)
Expired: May 30, 2004, 6:15 PM CDT
In force: 66 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County McCurtain County, OK

The radar

The Western Arkansas radar (KSRX), 160 km from the middle of the area, began a volume at 22:08 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 30, 12:35 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 10.2 hours before the alert went out and 180 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: 2146 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 631 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 376 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 15.2

Open this sounding in Storm Lab

The text

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

031 
WFUS54 KSHV 302209
TORSHV
OKC089-302315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
508 PM CDT SUN MAY 30 2004

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 615 PM CDT

* AT 505 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES SOUTH OF
  IDABEL...OR ABOUT 19 MILES NORTHEAST OF CLARKSVILLE...MOVING
  NORTHEAST AT 45 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  HAWORTH BY 515 PM CDT
  7 MILES NORTHWEST OF BOKHOMA BY 520 PM CDT
  8 MILES NORTHWEST OF AMERICA BY 525 PM CDT
  EAGLETOWN BY 530 PM CDT

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR MAY DEVELOP SHORTLY.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA
UNTIL 615 PM CDT.

LAT...LON 3385 9493 3374 9475 3381 9450 3416 9448

$$

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 4:44 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	61 min
May 30, 5:45 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	60 min

Nearby

Tornado Warnings in Oklahoma, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.