The month of June 2000 saw temperatures near normal and precipitation above normal.
For much of the month, winds aloft were from the northwest. This allowed for a procession of upper air disturbances, which generated rainfall from ample tropical moisture.
The temperature pattern reflects the moist air mass in place over the region, as daytime high readings were held down and nighttime low readings held up.
June 2000 was 1.6 degrees cooler than June 1999, and 0.06 inch wetter. Year-to-date rainfall through June 30 is 2.43 inches more this year than last.
Rainfall over the twelve months ending June 30, 2000 is 44.13 inches. This is 97.6 percent of normal rainfall, still reflecting the rainfall deficit of July 1999-February 2000. Rainfall between February 29, 2000 and June 30, 2000 is 26.42 inches. This is 151.4 percent of normal.
The 30-day outlook for June 2000 had called for above normal temperatures and below normal precipitation.
The week May 28-June 3 saw temperatures about four degrees warmer than normal, and rainfall slightly above normal.
For most of the week, upper atmospheric high pressure was in control. This caused the warm temperatures.
The storm feature of late in the previous week exited on the 27th/28th. This brought the rain, reported on the 28th, but which actually fell the 27th.
A storm feature crossed the evening of the 27th, bringing scattered heavy rainfall and scattered reports of severe weather. Minor cooling followed through the morning of the 29th, with upper air high pressure returning to the region that day. This caused a warm-up.
The 29th saw the season's first ozone action day.
The week June 4-10 saw temperatures three degrees cooler than normal and rainfall about 200 percent of normal.
A strong storm crossed on the 3rd/4th. This brought widespread and heavy rainfall.
It was followed by a Polar Maritime air mass, which lowered temperatures through the 7th.
Tropical Maritime air returned rapidly on the 8th. The remnants of Tropical Depression 1 spread rain into the area beginning the 9th.
The week June 11-17 saw temperatures about one degree above normal and rainfall near normal.
Minor upper air disturbances crossing in a northwesterly flow aloft caused the showers.
The presence of cloudiness and rainfall along with increasing soil moistures and the verdency of begetation held down temperatures.
The week June 18-24 saw temperatures about a degree above normal and rainfall twice normal.
A storm feature crossed on the 18th-19th, bringing most of the week's rainfall.
Otherwise, upper air disturbances produced scattered to numerous showers and thunderstorms in the region through the 22nd. Area rivers were out of banks, with significant flooding on the Sabine at Longview. The Lake Fork Creek reached its highest levels since 1971
On the 22nd, upper air high pressure built back into the region. This largely supppressed shower activity.
The reporting period for temperatures and phenomenon on each day is for the twenty-four hours ending at midnight hours GMT--6 p.m. CST and 7 p.m. CDT. The reporting period for precipitation is for the twenty-four hours ending at noon GMT--6 a.m. CST and 7 a.m. CDT. All times are given using the twenty-four hour clock, and are expressed in Greenwich Mean Time.
Observations are from NWS Station 41/9207/4 in Tyler, Texas. The term "normal" refers to averages from the standard climatic period 1971-2000.
MX MN OBS PCPN REMARKS
June 2000, RECORDS AND SUMMARY: