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March 17th - 20th 2006
Heavy Rainfall Event


A prolonged period of rain fell across the Four State Region during a four-day period from late Friday, March 17 through Monday, March 20, 2006. The heaviest rain fell north of Interstate 20 during this event with rainfall amounts generally between 4 and 6 inches with some totals just over 8 inches across Red River county in northeast Texas.

An isohytal rainfall map.
A graphic showing how many inches of rain fell during this four-day rain event.

March 19, 2006 7am surface map
Surface map for 7 am on Sunday, March 19, 2006.
An upper level chart for Sunday morning on March 19th 2006.
Upper level chart on the morning of Sunday March 19th.
Southerly winds just above the surface ushered copious amounts of Gulf of Mexico moisture over a nearly stationary frontal boundary across central texas. This moisture combined with a few upper level disturbances ahead of the main trough across the western U.S. resulted in nearly continuous rainfall with a few thunderstorms from Friday night through Sunday mainly along and north of Interstate 20. The heaviest rainfall was along the Interstate 30 corridor.

The upper trough then pushed east into the Southern Plains Sunday night and Monday. This allowed the frontal boundary to push a bit farther north as a warm front into east Texas and central Louisiana. This brought another round of heavy rainfall and thunderstorms across the region. Finally the rain came to an end Monday evening March 20th.


Here are a few storm rainfall totals:
LOUISIANA...
SHREVEPORT (AIRPORT)             4.25
SHREVEPORT (NWS)                 4.34
SHREVEPORT (WALLACE LAKE-NORTH)  3.35
MONROE (AIRPORT)                 5.78
MONROE (RIVER)                   4.84
VIVIAN                           6.45
HOMER 1N                         6.05
FARMERVILLE                      5.71
STONEWALL                        3.69
PROVENCAL                        2.95
HAGEWOOD                         4.10
BIENVILLE                        4.38
BENTON 5E                        6.48
WINNFIELD 2W                     1.90
ARCADIA                          4.47
HODGES GARDENS                   3.65
ARKANSAS... TEXARKANA 5.07 DE QUEEN 6.41 EL DORADO 3.95 LOCKSBURG 4.79 HOPE 3NE 5.76 LEWISVILLE 5.20 ASHDOWN 6.49
TEXAS... LUFKIN 1.39 TYLER 2.79 CLARKSVILLE 1W 8.20 QUITMAN 5.10 LONGVIEW 3.78 ATLANTA 5.51 HALLSVILLE 1W 5.67 KARNACK 6.27 CENTER 2.71 GARRISON 2.74 HEMPHILL 6NE 2.31 MOUNT PLEASANT 5.04 NEW BOSTON 5.32 GILMER 4WNW 4.40 OKLAHOMA... BROKEN BOW 1N 6.50


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