National Weather Service United States Department of Commerce

Summary

 

Supercell thunderstorms developed during the afternoon and evening of March 18th over the southern Texas panhandle and moved into southwestern Oklahoma, with large hail and four tornadoes reported by early evening. The first thunderstorms moved into western portions of north Texas and quickly strengthened to severe levels. Large hail was reported as they moved northeast into southwestern Oklahoma. As the storms moved into Greer County, the supercells developed strong low level rotation due to the high amounts of low-level wind shear. Four tornadoes developed over Greer and far southeast Beckham counties, but remained over open land and caused no known damage. Other storms developed during the evening hours, but the threat had transitioned to heavy rainfall, large hail, and damaging winds.

 

Tornado Table

 
Tornado
Number
Date Time
(CST)
Length
of Path
(miles)
Width
of Path
(yards)
F-Scale Killed Injured County Location
1 03/18/2012 1750-1804 4 150 EF0 0 0 Greer 2 E - 5 NE Reed
2 03/18/2012 1810 0.1 50 EF0 0 0 Greer 3 WSW Brinkman
3 03/18/2012 1827-1830 1.4 75 EF0 0 0 Greer 3 NW Willow
4 03/18/2012 1837-1842 1.0 75 EF0 0 0 Beckham 5 NNW Willow
 

Preliminary Local Storm Reports for March 18, 2012
Compiled by the Storm Prediction Center

 
 

Preliminary Local Storm Reports for March 18, 2012
Compiled by the NWS Norman Forecast Office

 

Here is the summary of the storm reports that we received at our office from this event.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
515 PM CDT SUN MAR 18 2012

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

0510 PM     HAIL             14 SW CROWELL           33.83N 99.91W
03/18/2012  E1.25 INCH       FOARD               TX   PUBLIC

0515 PM     HAIL             2 W HOLLIS              34.69N 99.95W
03/18/2012  E1.75 INCH       HARMON             OK   PUBLIC

            DAMAGED WINDSHIELD...RELAYED BY NWS AMA

0517 PM     HAIL             1 N HOLLIS              34.70N 99.92W
03/18/2012  E1.00 INCH       HARMON             OK   TRAINED SPOTTER

0518 PM     HAIL             3 W HOLLIS              34.70N 99.92W
03/18/2012  E1.00 INCH       HARMON             OK   TRAINED SPOTTER

            ON HIGHWAY 62

0520 PM     HAIL             1 W HOLLIS              34.69N 99.93W
03/18/2012  E1.75 INCH       HARMON             OK   AMATEUR RADIO

0535 PM     HAIL             4 W HOLLIS              34.69N 99.99W
03/18/2012  E2.50 INCH       HARMON             OK   AMATEUR RADIO

            NEAR OK TX BORDER

0613 PM     HAIL             1 W VINSON              34.90N 99.89W
03/18/2012  E1.75 INCH       HARMON             OK   TRAINED SPOTTER

            3 ESE OF SANDY OK

0625 PM     HAIL             3 W TRUSCOTT            33.75N 99.85W
03/18/2012  E1.00 INCH       KNOX               TX   CO-OP OBSERVER

0635 PM     HAIL             7 S CHILLICOTHE         34.15N 99.51W
03/18/2012  E0.88 INCH       HARDEMAN           TX   TRAINED SPOTTER

0644 PM     HAIL             2 W REED                34.90N 99.72W
03/18/2012  E2.00 INCH       GREER              OK   TRAINED SPOTTER

0650 PM     TORNADO          10 W MANGUM             34.88N 99.68W
03/18/2012  EF0              GREER              OK   STORM CHASER

            TIME AND LOCATION APPROXIMATE

0710 PM     TORNADO          3 WSW BRINKMAN          34.96N 99.60W
03/18/2012  EF0              GREER              OK   STORM CHASER

            TIME AND LOCATION APPROXIMATE

0727 PM     TORNADO          3 WNW WILLOW            35.07N 99.56W
03/18/2012  EFO              GREER              OK   STORM CHASER

            TIME AND LOCATION APPROXIMATE

0728 PM     HAIL             3 NW WILLOW             35.21N 99.70W
03/18/2012  E1.50 INCH       BECKHAM            OK   STORM CHASER

0737 PM     TORNADO          5 NW WILLOW             35.10N 99.57W
03/18/2012  EF0              GREER              OK   STORM CHASER

            TIME AND LOCATION APPROXIMATE

1109 PM     TSTM WND GST     2 SW GAGE               36.30N 99.78W
03/18/2012  M58 MPH          ELLIS              OK   ASOS

            GAG ASOS

0300 AM     TSTM WND GST     4 ESE ERICK             35.19N 99.80W
03/19/2012  M60 MPH          BECKHAM            OK   MESONET

0325 AM     TSTM WND GST     2 WSW WOODWARD          36.42N 99.42W
03/19/2012  M58 MPH          WOODWARD           OK   MESONET

&&

$$