Surface charts and discussion




                                On April 9, 1947, a tornado touched down at 542 pm(2342 UTC), WSW of White Deer, TX  in the Texas panhandle.
                                The tornadic storm would go on to devastate parts of the panhandle, northwest Oklahoma and Kansas, resulting in 181
                                fatalities. After the White Deer tornado turned north and lifted, another tornado touched down 5 miles NW of Pampa.
                                The tornado passed 3 miles NW of Canadian. The tornado widened to over a mile in the northeast TX Panhandle. The
                                town of Glazier was completely destroyed with 15 people killed, and much of Higgins, TX was destroyed with 51 fatalities.
                                Six people were killed in Oklahoma before the tornado reached Woodward as dozens of farms were destroyed 2 to 3
                                miles SE of Gage and Fargo. The tornado devastated Woodward killing at least 107 people in Woodward(from Siginficant
                                Tornadoes by Tom Grazulis). The damage path was 2 miles through Woodward.The tornado started moving more to the
                                NNE after leaving Ellis county  in Woods county, 36 homes were destroyed with 30 people injured. The tornado entered
                                Kansas just west of Hardtner before dissipating. Weak tornadoes and downburst activity continued well into Kansas with
                                the storm. A strong to violent tornado also occurred in southwest Kansas to the SW and S of Dodge City the same evening.
                                Yet another tornadic storm occurred south of the Woodward storm. A map containing these tornadoes can be found here.
                                Much of the information on this map was obtained from "Significant Tornadoes" by Tom Grazulis.

                                At 1530 UTC April 9, a surface warm front stretched from central NM to just S of Lubbock to N of Dallas. This front was
                                nearly stationary from NE TX into Mississippi. Surface low pressure was located in E. Utah, with a pacific cold front 
                                extending S  into far eastern AZ. Another low-level baroclinic zone was noted over southern KS. Fog was common north
                                of the warm front in NE NM and the TX panhandle with visibilities 1/8 mile at Amarillo and Pampa and 1/4 mile at Clayton,
                                NM and Childress, TX.

                                By 1830 UTC  the warm front was stretched from near Santa Fe, NM to just S of Tumumcari, NM to just S of Childress
                                to S of Texarkana, AR. The surface visibility was zero at Pampa and 1/8 mile at Amarillo. A warm front or stationary
                                front was located from eastern CO into southern KS. The pacific cold front had progressed into western NM, with an
                                occlusion further north in Colorado. A surface dryline was located across far west TX.

                                The pacific cold front charged into central NM by 21Z, with the occlusion further north to near Denver. The warm front
                                stretched from near Trinidad, CO to Clayton to between Amarillo and Pampa, then ESE to near Texarkana. The
                                T/TD & visibility jumped from 58F/58F & 1/4 mile at Amarillo at 1730 UTC to 71F/57F & 7 miles at 1830 UTC, indicating
                                a warm frontal passage. But Pampa still reported light fog with T/Td of 58F/58F. The other nearly stationary boundary was
                                draped across southern KS.

                                By 0030 UTC, surface low pressure was located over far NE NM and the OK panhandle. The pacific cold front stretched
                                SSW then SW from the low to west of El Paso. The occlusion extended north into eastern CO. The warm front extended
                                SE then ESE from the low to N of Pampa and across southern OK. 

                                By 0330 UTC the surface low was not far from Guymon, OK, with the cold front trailing to just east of  Amarillo and into
                                SE NM. Frontogenesis was occurring NE of the surface low  into central and NE KS. A cold front extended SW from the
                                occluded low near Limon, CO.