( CNN ) One person was killed Wednesday when severe weather ripped through the Tulsa and Oklahoma City areas . The death was reported in Sand Springs , a suburb of Tulsa , after the storm system ravaged a mobile home park , said Maj. Shannon Clark with the Tulsa County Sheriff 's Office . `` Right now , rescue efforts are continuing and officers are aiding the injured and helping those who need immediate medical care , '' he said . `` It 's very tough conditions right now -- very touch and go . The conditions my people are working in right now are deplorable at best . '' Earlier , the National Weather Service issued a tornado warning for Tulsa . A confirmed , `` extremely dangerous '' tornado was spotted near Sand Springs , moving east at 45 mph , the weather service said . The tornado warning included downtown Tulsa . Large , damaging hail the size of baseballs and hurricane-force winds were possible . A severe thunderstorm watch was in effect for the area until late Wednesday night . More severe weather tore through the Oklahoma City area . Another tornado was spotted about 15 miles south of town south in Moore , said Sgt . Jeremy Lewis with the city 's police . `` We have about a 2-mile square area with significant damage , mainly roofs off homes and downed trees , '' he said . `` Right now , we have the area secured , we have crews in there making sure that gas lines , electrical line , all that 's turned off. `` Trees had to be cleared so law enforcement and emergency vehicles could get through . `` You know , this is n't the first time we 've done this so ... unfortunately , we 've gotten pretty good at getting people back into their residences as quick as we can , '' Lewis said . `` We just have to make sure that it 's safe . Lewis said a temporary hospital was treating patients with minor injuries . The original Moore Medical Center was destroyed two years ago in a tornado . Staff took cover in temporary shelters as the storm approached . `` Their building did sustain a little bit of damage , but they were able to reopen once the storm passed and start taking patients in , '' Lewis said . The city asked folks to stay away , saying they had things under control . `` Do not enter the tornado damaged area . Moore Police/Fire have not requested mutual aid , '' the city of Moore tweeted. `` A call for volunteers will be made when needed . '' Moore Public Schools called off classes for Thursday . `` School has been canceled tomorrow Mar 26 due to damage across the district , '' the school district tweeted . `` Updates tomorrow morning - Thanks for your patience . '' CNN 's Sean Morris , AnneClaire Stapleton and Dave Alsup contributed to this report .
National Weather Service issues tornado warnings for Tulsa . An unclear number of people are injured . quote : ` ` The conditions my teams are operating in right now are deplorable at best ''