Alert archive / Oklahoma / Tornado Warnings in 2005

Tornado Warning 3, NWS Norman, OK

March 21, 2005Seminole County, Oklahoma

NWS Norman, OK issued this tornado warning at Mar 21, 2005, 3:12 PM CST for Seminole County, Oklahoma. It was in force for 33 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: Mar 21, 2005, 3:12 PM CST (21:12 UTC)
Expired: Mar 21, 2005, 3:45 PM CST
In force: 33 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Seminole County, OK

The radar

The Norman radar (KTLX), 78 km from the middle of the area, began a volume at 21:14 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
Mar 21, 12:15 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.2 hours before the alert went out and 91 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 512 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 434 m²/s²
0-3 km storm-relative helicity: 584 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000
WFUS54 KOUN 212112
TOROUN
OKC133-212145-
/O.NEW.KOUN.TO.W.0003.050321T2112Z-050321T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
ISSUED BY NATIONAL WEATHER SERVICE TULSA OK
312 PM CST MON MAR 21 2005

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

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

* UNTIL 345 PM CST

* AT 310 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS STORM WAS LOCATED 4
  MILES SOUTHWEST OF CROMWELL...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...CROMWELL.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CST MONDAY EVENING FOR
OKLAHOMA.

LAT...LON 3530 9668 3517 9653 3553 9600 3572 9624

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 21, 2:41 PM CST	Severe Thunderstorm Warning	OUN	Alfalfa	34 min
Mar 21, 2:46 PM CST	Tornado Warning	OUN	Seminole	29 min
Mar 21, 2:54 PM CST	Tornado Warning	OUN	Alfalfa	36 min
Mar 21, 3:22 PM CST	Tornado Warning	OUN	Hughes	38 min
Mar 21, 3:26 PM CST	Tornado Warning	OUN	Alfalfa	34 min
Mar 21, 3:38 PM CST	Tornado Warning	OUN	Grant	37 min
Mar 21, 3:53 PM CST	Tornado Warning	OUN	Hughes	38 min
Mar 21, 4:13 PM CST	Tornado Warning	OUN	Grant	32 min
Mar 21, 4:40 PM CST	Tornado Warning	OUN	Grant	35 min

Nearby

Tornado Warnings in Oklahoma, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.