Evening/Nighttime Tornado Cases

Date Comments
19990402 Tornadoes swrn OK. The max DPI event (F1) occurred at 0125z.
19990604 Tornadoes n-cntrl NEB. The max DPI event (F2) occurred at 0222z.
20000224 F1 tornado nern TX pnhdl into nwrn OK at 0213z.
20010421 Significant tornadoes cntrl KS beginning 0020z. The max DPI event (F4 Hoisington, KS) occurred at 0215z.
20020417 Significant tornadoes nwrn OK beginning 0432z. The max DPI event (F2) occurred at 0527z.
20020507 Significant tornadoes swrn KS. The max DPI event (F2) occurred at 0134z.
20020523 F1 tornado nrn TX pnhdl. The max DPI event (F1) occurred at 0425z.
20030507 Significant tornadoes srn OK beginning 0631z. The max DPI event (F2) occurred at 0754z.
20030509 Significant tornadoes cntrl OK beginning 0315z. The max DPI event (F3) occurred at 0328z.
20030623 Significant tornado (F4) nern NEB 0243z.
20040512 Significant tornadoes swrn/s-cntrl KS beginning 0101z. The max DPI event (F4) occurred at 0139z.
20050511 Significant tornadoes swrn KS. The max DPI event (F2) occurred at 0202z.
20060401 Significant tornado swrn KS. The first tornado occurred at 0020z. The most intense tornado (F2) occurred at 0220z.
20070420 Significant tornadoes swrn NEB beginning 0216z. The max DPI event (F2) occurred at 0302z.
20070423 Tornadoes nwrn and swrn KS and nwrn OK. The first tornado (brief) was reported at 2340z in nwrn OK. The more intense tornadoes occurred across the border into KS around Sitka and Protection. The longest-track tornado occurred in nwrn KS around 0125z. Other tornadoes occurred in TX along the I-20 corridor from Colorado City to Sweetwater and Trent.
20070504 Significant tornadoes swrn KS. The most intense tornado (EF5 - Greensburg, KS) occurred at 0203z.
20070523 Significant tornadoes nern TX pnhdl. The first tornado report (F0) occurred at 2128z. The longest-track and widest tornado (F2) occurred at 0350z.
20071016 F1 tornado srn TX pnhdl. Tornado touched down 13 s of Canyon at 0516z.
20080330 Tornadoes cntrl OK. The first tornado report (F0) occurred at 0244z. The most tornado (F1 - Edmond, OK) occurred at 0539z.
20080424 Significant tornadoes n-cntrl KS. The first tornado report (F0) occurred at 0342z. The longest-track and widest tornado (F2) occurred at 0523z.
20090425 Four tornadoes n-cntrl OK. North Enid F2. Southeast of Kremlin F2.

Null Case Listing

Date Comments
19990307 Too dry. One hail report around 12z n-cntrl TX.
19990331 Capped/too dry. No svr.
19990407 Hail wrn TX after 03z.
20000320 No svr.
20000429 Storms initiated over the low rolling plains of TX around 23z invof of warm or stationary boundary. Severeal storm splits were observed through 01z and a boundary was identified moving swwd through the sern TX pnhdl and s plains. Between 03-05z, large cyclonic supercells evolved over Kent, Stonewall and Haskell counties, producing hail up to 3" in diameter. Earlier, hail up to 3.5" in diameter was reported in Motley county.
20000516 Supercells sern WY and multicell clusters ern TX pnhdl into wrn OK. Brief tornado (F0) report sern WY at 01z, but mainly just wind and hail.
20010310 Diurnal hail nrn TX pnhdl into swrn KS. No well defined increase in LLJ.
20010405 Hail/wind lower MO valley.
20010409 Hail srn KS. Day before svr outbreak cntrl/srn plains into OH valley.
20010502 Hail wrn TX into wrn OK. Two brief tornado reports wrn TX. Messy convective mode. Marginal deep layer shear and a sagging surface front.
20020313 No svr.
20020323 No svr.
20020415 No srv. A few diurnal storms Trans-Pecos into the Permain Basin, but nothing farther north. Day before a severe event upper MS Valley into srn plains (high risk upper MS valley)
20020418 Svr cntrl KS. Brief F0 reported around 0z.
20020420 Nocturnal hail srn and ern KS. Warm sector remained capped.
20020426 Nocturnal storms wrn TX and nern OK/sern KS. Except for TX Big Bend, warm sector remained capped through diurnal heating cycle. Day before a substantial severe/tornado event lower OH valley.
20020515 Wind and hail late afternoon into night KS.
20030316 No svr. Day before cntrl/srn plains event (Gotebo, OK - 3/17)
20030403 Isolated, diurnal supercell developed over swrn OK. It produced svr hail into cntrl OK. Day before tornado outbreak cntrl plains into mid south
20030405 Multiple supercells nrn TX. Diurnal storm tracked from e of LBB to the Metroplex with a number of brief (F0) tornadoes reported. A second supercell formed after 00z e of SPS and tracked toward PRX. Day before big svr event Ozark plateau into lower MS valley.
20040326 Diurnal storms wrn TX and elevated storms overnight KS. Day before cntrl/srn plains event (Kingman,KS - 3/27)
20040419 Diurnal storms (including supercells) ern NM/wrn TX. Diurnal storms dissipated over the TX S plains. Over the nrn TX pnhdl into OK pnhdl, storms intensified after 01z with sig hail being reported. Day before tornado outbreak IL/IND.
20040521 Diurnal storms (supercells), but dissipation during the evening presumably due to the cap. Day before cntrl plains outbreak (Hallam, NEB - 5/22)
20050404 No storms. Air mass remained capped. Day before cntrl/srn plains svr episode
20050409 No diurnal storms. Air mass remained capped. Elevated, nocturnal storms NEB and from the TX pnhdl into cntrl KS. Day before cntrl/srn plains svr episode
20050420 Diurnal storms TX pnhdl into swrn KS. Another cluster of svr storms moved across nern CO. The strongest storm was a supercell near CDS. Sig hail, but no tornadoes in smooth log. Day before a severe wx episode from the mid MO valley into the cntrl low plains and Ozark plateau.
20060329 No diurnal storms; short wave trough passed through cntrl conus early in the day. Nocturnal storms late wrn/cntrl KS. Day before a severe wx episode from the mid MO valley into srn plains.
20060405 Air mass capped; no duirnal storms. No nocturnal storms either. Day before a severe wx episode cntrl/srn plains (4/6).
20060423 Diurnal storms along dryline wrn KS into the TX pnhdl. Nocturnal storms KS. Day before a severe wx episode OK (El Reno - 4/24).
20070412 Diurnal storms along dryline the TX pnhdl into TX s plains. Storms persisted ewd into wrn OK. Very marginal moisture. Storms may have become elevated by evening. Day before a severe wx episode TX (4/13).
20071013 new
20080407 Diurnal storms (supercells) including a tornado near Electra, TX. Storms persisted through the evening, but mode issues.
20080416 No diurnal storms due to limited moisture. Elevated storms developed by late evening n of warm front.