National Drought Mitigation Center for the forty-eight contiguous states in the United States demon­ strated that severe and extreme drought affected more than 25 per cent of the country in twenty-seven o of ft7h5e0p ,0 a 0 st 0omnie2h (1 u , n9d4r2e , d50y0 ea k rs m . 2 T ) h o is rrm ep orrees . ents an area con D tr raosutg to htf lo s o el ddso , m hu rrre ic su an lt ess , inansdtrtuoc rn tu ardaol es d . a m Fo argteh , e s in e reasons, the quantification of impacts and the pro­ vision of disaster relief are far more difficult tasks for A fif lttyho ye uagrhsaT go an , n c ehill’s book was written m drought than they are for other natural hazards. recognising the li omnasteotloogf ists continue to strug o g re le twhiatnhtEommeerdgetnocydem al a in ngagweirtsh , ifm or paecxtasm th p a le t , ar aerestm ru ocrteu ra alccaunsd ­ p cr oiltiecry ia ) m fo ak redresclcaor ntinue tdor ou d g eb hat te a nd th e sc ie bnatsiissts (i a . ned ., lcoocm al m ise udn , i ca re ti sopno nd an in dgttroa ns th peosre ta t e io v n en ts c ha bnynerless , to p ri rnog ­ acc Second, the ab in se gnacneeonfdatopraecdirsoeugahntd . universally vdird in in k g in gemwear te gre , nacnydm so edfiocratlh . s T up h p es li eesc , ha ernascu te r r in is g ti cs sao fe f a it bsoeupttewdh definition of drought adds to the confusion drought have hindered the development of accurate, mu dsetgb re eeeotf her or reg s io ev nerai ty n . oRtneaald is rto ic uag lly h , tdeexfiisntistiaonnds , oiffd it roduogehst , a re nld ia , bl uel , tiamnadtetliym , el tyhee st fiom rm ate u s la o ti fon se voefr it dyraonudgh im tpcaocn ts ­ T th haitshiasvoenbeeeenxpdle an d at iaopnplfiocrattihoens ( coor re im spoafcdt) efsipne it ciio fi ncs . ting Heanzcayrd pl aenvsenbtysm ha ovsetbgeoevnerrnam nk eend ts b . y Bryant (1991) faincaalty io se ndsm tud o y re , th vaenl op 1e5d0 . W de iflihniitte io annsdiGn la th n e tz ir (1 c 9 la 8 ss 5 i ) ­ roannk th in egb is assiusmomftah ri esierdcihnarTaacb te le ri s1t . i1c . sKaenydhiamzp ar adctcsh . aTrh ac is ­ ddeeffiinne it idornosug are annudmemraonuys , mmoarney ex diost. noAtl th ad oeuqguhatteh ly etoefritsh ti ecsdu eg se re defoorftsheivsee ri v ty al , ulaetn io g n th inocf lu edveenatn , e to xtparlesasrieoanlp ar oel ic a y rb m i akers h . t T in hemteharneisnhgofludlstefromrsde fo cl ras ri c n ie gntd is rtosuagnhdteefxfteecn ts t, , tlootnagl -l toesrsm of im li p fe a , ctt , otsauldedceonnnoem ss i , calnod ss , oscoccu ia r­ lteox am sp pelceitfriacryim in pam ct o s st inc as keesy (i e . ceo ., ntohm ey ic ar seecn to orts ) l . i nk FeodrA re lntcheouogfhatshseocriaattiendgshoafzatrhdesvfao ri rou th s ir htayz -a orndesihnazTaarbdlse . pmeor cent , owfnho at r m is atlhperesc ig ip niitfa ic ti aonnceovoefraatphe re ri sohdolodfo th fr7e5ep1r .1 ova id re essuabnjeicnttievge, rattheedoavsesreaslslm ra ennktiosfuh se afzualrdb ec cahuas ra eci ­ tsee spe nctihas ll yormmio sl reea ? d A in gdeffo in r i ti looncao ti fon th sisw ty it phewa ou st lrdonbgetBee ri csatu ic sseoafntdhetihne te nrse it lya , t io dnusrhaitp io s n , baen tw desepna tia hlaezxatredns. t s ty ta p as eos na olfcporm ob ploenm ent of annual precipitation. These of drought events and the magnitude of associated init n io d n in s g an odftthheelcsaocn are kceopft th beytrheo su c se lt f o or fmau la m ti insgunddeefr ­ ­ icm og pean ct t s , a d rg ruom ug ehntt , ra hnokwsevveerry , h th ig aht . t O ot naelc lo asnsmoafke li fe aaop th p e ly rtshce ie dne ti fsitnsito io rndiin sc a ip clt in oenssiw de il rlateivoenntguiavle ly n n to ee dhotwo associated with drought in this case is significantly assessments of impact in u m al uld ti rpoluegh ec tosn it oum ations (e.g., d ov ro e u rr gah te t d . isLo ra srseoifnl if meo th sattsies tt d in ir gesc . t ly T h as esorcain at keidngwib th yrderlo ie ufgphrtogdreacm la m ra e ti s o ) n . s or revocations for eli igcibsie li cttyortso , dBrroyuagnhtt. atT tr h ib is uitses in a lo pspsroopfr ia li tfeesb in ecceau th se eporfim fa a m ry inceautsoe spre Tahdi rd ov , er draoluag rg hetrigmepoagcrtaspha ic re a nonstruct of famine in recent decades has been civil war or that result from other natural haz laradrse . aFtohraneudraamla and political strife, both of which heighten vulnerability to recent analysis of drought occurrence by x th aemp ( lUeg , eassdS) fa yrsotu em ght. mine s . anDdrocu an ghbteeavesnitgsnid fi icsarnutptnaftouord al p tr riogdguecrtifoonr

National Drought Mitigation Center for the forty-eight contiguous states in the United States demon­ strated that severe and extreme drought affected more than 25 per cent of the country in twenty-seven o of ft7h5e0p ,0 a 0 st 0omnie2h (1 u , n9d4r2e , d50y0 ea k rs m . 2 T ) h o is rrm ep orrees . ents an area con D tr raosutg to htf lo s o el ddso , m hu rrre ic su an lt ess , inansdtrtuoc rn tu ardaol es d . a m Fo argteh , e s in e reasons, the quantification of impacts and the pro­ vision of disaster relief are far more difficult tasks for A fif lttyho ye uagrhsaT go an , n c ehill’s book was written m drought than they are for other natural hazards. recognising the li omnasteotloogf ists continue to strug o g re le twhiatnhtEommeerdgetnocydem al a in ngagweirtsh , ifm or paecxtasm th p a le t , ar aerestm ru ocrteu ra alccaunsd ­ p cr oiltiecry ia ) m fo ak redresclcaor ntinue tdor ou d g eb hat te a nd th e sc ie bnatsiissts (i a . ned ., lcoocm al m ise udn , i ca re ti sopno nd an in dgttroa ns th peosre ta t e io v n en ts c ha bnynerless , to p ri rnog ­ acc Second, the ab in se gnacneeonfdatopraecdirsoeugahntd . universally vdird in in k g in gemwear te gre , nacnydm so edfiocratlh . s T up h p es li eesc , ha ernascu te r r in is g ti cs sao fe f a it bsoeupttewdh definition of drought adds to the confusion drought have hindered the development of accurate, mu dsetgb re eeeotf her or reg s io ev nerai ty n . oRtneaald is rto ic uag lly h , tdeexfiisntistiaonnds , oiffd it roduogehst , a re nld ia , bl uel , tiamnadtetliym , el tyhee st fiom rm ate u s la o ti fon se voefr it dyraonudgh im tpcaocn ts ­ T th haitshiasvoenbeeeenxpdle an d at iaopnplfiocrattihoens ( coor re im spoafcdt) efsipne it ciio fi ncs . ting Heanzcayrd pl aenvsenbtysm ha ovsetbgeoevnerrnam nk eend ts b . y Bryant (1991) faincaalty io se ndsm tud o y re , th vaenl op 1e5d0 . W de iflihniitte io annsdiGn la th n e tz ir (1 c 9 la 8 ss 5 i ) ­ roannk th in egb is assiusmomftah ri esierdcihnarTaacb te le ri s1t . i1c . sKaenydhiamzp ar adctcsh . aTrh ac is ­ ddeeffiinne it idornosug are annudmemraonuys , mmoarney ex diost. noAtl th ad oeuqguhatteh ly etoefritsh ti ecsdu eg se re defoorftsheivsee ri v ty al , ulaetn io g n th inocf lu edveenatn , e to xtparlesasrieoanlp ar oel ic a y rb m i akers h . t T in hemteharneisnhgofludlstefromrsde fo cl ras ri c n ie gntd is rtosuagnhdteefxfteecn ts t, , tlootnagl -l toesrsm of im li p fe a , ctt , otsauldedceonnnoem ss i , calnod ss , oscoccu ia r­ lteox am sp pelceitfriacryim in pam ct o s st inc as keesy (i e . ceo ., ntohm ey ic ar seecn to orts ) l . i nk FeodrA re lntcheouogfhatshseocriaattiendgshoafzatrhdesvfao ri rou th s ir htayz -a orndesihnazTaarbdlse . pmeor cent , owfnho at r m is atlhperesc ig ip niitfa ic ti aonnceovoefraatphe re ri sohdolodfo th fr7e5ep1r .1 ova id re essuabnjeicnttievge, rattheedoavsesreaslslm ra ennktiosfuh se afzualrdb ec cahuas ra eci ­ tsee spe nctihas ll yormmio sl reea ? d A in gdeffo in r i ti looncao ti fon th sisw ty it phewa ou st lrdonbgetBee ri csatu ic sseoafntdhetihne te nrse it lya , t io dnusrhaitp io s n , baen tw desepna tia hlaezxatredns. t s ty ta p as eos na olfcporm ob ploenm ent of annual precipitation. These of drought events and the magnitude of associated init n io d n in s g an odftthheelcsaocn are kceopft th beytrheo su c se lt f o or fmau la m ti insgunddeefr ­ ­ icm og pean ct t s , a d rg ruom ug ehntt , ra hnokwsevveerry , h th ig aht . t O ot naelc lo asnsmoafke li fe aaop th p e ly rtshce ie dne ti fsitnsito io rndiin sc a ip clt in oenssiw de il rlateivoenntguiavle ly n n to ee dhotwo associated with drought in this case is significantly assessments of impact in u m al uld ti rpoluegh ec tosn it oum ations (e.g., d ov ro e u rr gah te t d . isLo ra srseoifnl if meo th sattsies tt d in ir gesc . t ly T h as esorcain at keidngwib th yrderlo ie ufgphrtogdreacm la m ra e ti s o ) n . s or revocations for eli igcibsie li cttyortso , dBrroyuagnhtt. atT tr h ib is uitses in a lo pspsroopfr ia li tfeesb in ecceau th se eporfim fa a m ry inceautsoe spre Tahdi rd ov , er draoluag rg hetrigmepoagcrtaspha ic re a nonstruct of famine in recent decades has been civil war or that result from other natural haz laradrse . aFtohraneudraamla and political strife, both of which heighten vulnerability to recent analysis of drought occurrence by x th aemp ( lUeg , eassdS) fa yrsotu em ght. mine s . anDdrocu an ghbteeavesnitgsnid fi icsarnutptnaftouord al p tr riogdguecrtifoonr