Weekly Weather BriefingWeekly Weather Briefing07/28/201107/28/2011

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Keith StellmanKeith StellmanWarning Coordination MeteorologistWarning Coordination Meteorologist

National Weather Service Shreveport, LouisianaNational Weather Service Shreveport, Louisiana

100 + Days in July !!100 + Days in July !!Tyler

LongviewHad 19 in a row

Shreveport

**Current average monthly temperature in Tyler = 90.9. This is 1.2 degrees warmer than the warmest

month on record.

**Tyler set an all-time record for consecutive days of 100+ with current

streak of 30. Old record was 20 set in 1998.

Records since 1896

• SHV 4” Soil Temp = 91

OverviewToday + FridayToday + Friday

Best chances for rainBest chances for rain May keep temperatures down a bitMay keep temperatures down a bit Don approaching Texas CoastDon approaching Texas Coast

WeekendWeekend Temperatures slightly cooler due to rain cloud cover on Temperatures slightly cooler due to rain cloud cover on

Saturday. Best chances of rain on SaturdaySaturday. Best chances of rain on Saturday Warms up SundayWarms up Sunday

Monday through WednesdayMonday through Wednesday Upper level high pressure ridge will shift from east coast to Upper level high pressure ridge will shift from east coast to

Central US by MondayCentral US by Monday Warms back up.Warms back up. Weak disturbance forecast to move in on Monday…possibly Weak disturbance forecast to move in on Monday…possibly

increasing rain chances.increasing rain chances.

National Weather Service Shreveport, LouisianaNational Weather Service Shreveport, Louisiana

CurrentlyCurrently

Don

Radar/Temps @ 912 AMRadar/Temps @ 912 AM

TodayToday

Upper level Upper level ridge over ridge over Eastern US.Eastern US.

Allowing for Allowing for disturbances disturbances to rotate to rotate northwestwardnorthwestward

Today (Thursday)Today (Thursday)Rain Chances Rain Chances HighsHighs

TropicsTropics1 current storm - Don1 current storm - Don

FridayFriday Ridge Ridge

remains eastremains east Storms Storms

allowed to allowed to develop on develop on western edgewestern edge

FridayFridayRain Chances Rain Chances HighsHighs

Sunday +Sunday + Upper ridge Upper ridge

transitions back transitions back over central USover central US

Becomes hot Becomes hot again - More again - More Isolated stormsIsolated storms

Weak boundary Weak boundary moves in moves in Monday…best Monday…best chances.chances.

Forecast Precip Next 5 Forecast Precip Next 5 DaysDays Best Best

chances chances south and south and easteast

Highest Highest chances chances Thur-SatThur-Sat

1”- 1.50”

TropicsTropics

Tropical WavesT.S. Don

Ongoing DroughtOngoing Drought

Much of Much of Northwest and Northwest and North-central North-central Louisiana Louisiana remains under remains under D3-D4 drought D3-D4 drought conditions.conditions.

Improvements Improvements in South LAin South LA

Ongoing DroughtOngoing Drought

Much of east Much of east Texas Texas along/south of along/south of I-20 under I-20 under D3-D4 D3-D4 drought drought conditions.conditions.

D4 added in D4 added in Smith/ Smith/ Cherokee.Cherokee.

Ongoing DroughtOngoing Drought Much of Much of

Southern Southern Arkansas Arkansas under D1-D2 under D1-D2 drought drought conditions.conditions.

Stripe of D3 Stripe of D3 along the along the LA/AR lineLA/AR line

Month to Date Month to Date Percentage of Normal Percentage of Normal

RainfallRainfall

NEXT CONFERENCE CALL:

ThursdayThursday Aug 4, 2011 10 AM Aug 4, 2011 10 AM

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National Weather Service Shreveport, LouisianaNational Weather Service Shreveport, Louisiana