Status and evolution of the 2010 2011 south central us drought
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Status and Evolution of the 2010-2011 South Central US Drought. Victor Murphy NWS Southern Region Climate Service Program Manager NIDIS Drought Workshop Austin, TX July 7, 2011. Other than Portions of Louisiana, the Southern Plains was Effectively Drought Free on 10/1/10. USDM on 10/5/10.

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Status and evolution of the 2010 2011 south central us drought
Status and Evolution of the 2010-2011 South Central US Drought

Victor Murphy

NWS Southern Region Climate

Service Program Manager

NIDIS Drought Workshop

Austin, TX July 7, 2011



Usdm on 10 5 10
USDM on 10/5/10 Effectively Drought Free on 10/1/10


Tropical cyclones alex and hermine played a significant role in this
Tropical Cyclones Alex and Effectively Drought Free on 10/1/10Hermine Played a Significant Role in This…



Drought has always been a reoccurring climatological cycle for the southern plains
Drought Has Always Been A Reoccurring Climatological Cycle for the Southern Plains.

Graphs Courtesy of SCIPP.


Drought has always been a reoccurring climatological cycle for the southern plains1
Drought Has Always Been A Reoccurring Climatological Cycle for the Southern Plains.

Graphs Courtesy of SCIPP.


Drought has always been a reoccurring climatological cycle for the southern plains2
Drought Has Always Been a Reoccurring Climatological Cycle for the Southern Plains.

Graphs Courtesy of SCIPP.


Drought has always been a reoccurring climatological cycle for the southern plains3
Drought Has Always Been a Reoccurring Climatological Cycle for the Southern Plains.

Graphs Courtesy of SCIPP






Precipitation percentile of non exceedence from 10 1 10 5 31 11
Precipitation Percentile of Non- for the Southern Plains.Exceedence from 10/1/10-5/31/11







But wait june only gets worse
But Wait, June only gets worse! for the Southern Plains.


But wait june only gets worse1
But Wait, June only gets worse. for the Southern Plains.


But wait june only gets worse2
But Wait, June only gets worse! for the Southern Plains.


But wait june only gets worse3
But Wait, June only gets worse! for the Southern Plains.

  • Midland and Lubbock had their warmest months ever. Houston and College Station had warmest June ever.

  • 2nd warmest June on record in Amarillo, Austin, and Waco.

  • Texas had its warmest June ever, 85.2F, besting 1953 value of 84.9.

  • Louisiana had its 2nd warmest June ever, behind only 2010.


But wait june only gets worse4
But Wait, June only gets worse! for the Southern Plains.

  • Most recent 9 month rainfall total, 8.40”, is the driest 9 month period ever. Previous was 9.36” ending February, 1918.

  • As per the TX State Climatologist, current drought is now officially the 3rd worst on record (with a bullet!), behind 1951-1957, and 1916-1918, based on the PDSI.

  • Previous 2 worst droughts peaked in 9/56 and 8/18. Stats through June for all 3 of these droughts are very similar.


But wait june only gets worse5
But Wait, June only gets worse! for the Southern Plains.

Dark line =10 year running average


But wait june only gets worse6
But wait, June only gets worse. for the Southern Plains.

Dark line=10 year running average


Current usdm
Current USDM for the Southern Plains.

91% of TX in Extreme

to Exceptional Drought.

Worst Ever.


Questions
Questions?? for the Southern Plains.

Victor Murphy

NWS Southern Region

Climate Service Program Mgr.

817-978-2652 x 130

[email protected]


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