National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rain from the Southern Plains through the Southeast

Scattered to severe thunderstorms and heavy rain may produce hail, damaging winds, and localized flash flooding across portions of the southern Plains and Southeast. Another area of heavy rain will develop over parts of the Ohio Valley/Central Appalachians and create mainly localized areas of flash flooding. Read More >

WFO CRP Office Training Plan for October 2019 - March 2020 NWS LMS

Latest News

  • Added a link to Mike's Reanalysis Study on Heavy Rainfall Rainfall Events and resulting Pattern Recogntion Maps in the Flash Flood/Heavy Rain section of "Forecast Aids".

ISC Thresholds

Required Grids Time ISC Collaboration Thresholds (if applicable)    
MaxT/MinT/T/Td Days 1-8 5 degrees    
ApparentT/HeatIndex/WindChill Days 1-8 7 degrees    
PoP Days 1-8 20%    
Sky Days 1-8 25%    
Wx Days 1-8 N/A    
Hazards Days 1-8 N/A    
QPF Days 1-4 0.25 inch 0.50 inch 1.0 inch
    QPF < 1.5 inches QPF < 3.0 inches QPF >= 3.0 inches
Wind/WindGust Days 1-8 10 knots 15 knots 45 degrees
    Winds 13-19 knots Winds >= 20 knots Winds >= 12 knots
RH/MaxRH/MinRH Days 1-8 5% 10% 15%
    RH < 20% RH 20-24% RH 25-49%
    20% 25%  
    RH 50-74% RH 75-100%  
WaveHeight Days 1-7 2 feet 3 feet 4 feet
    Waves > 2 & < 6 feet Waves < 12 feet Waves < 16 feet
    5 feet 6 feet 7 feet
    Waves <20 feet Waves < 24 feet Waves < 28 feet
    8 feet    
    Waves < 32 feet    
Wind20ft Days 1-8 N/A    
MixHgt Days 1-3 N/A    
TransWind Days 1-3 N/A    
LAL Days 1-3 N/A    
Haines Days 1-3 N/A    
Wetflag Days 1-2 N/A    
Period Days 1-2 N/A    
RipCurrentRisk Days 1-2 N/A    
UVIndex Days 1-2 N/A    
         
 
Winter Grids Time ISC Collaboration Thresholds (if applicable)    
SnowAmt Days 1-3 2 inch 4 inch 6 inch
    Snow < 6 inches Snow < 12 inches Snow >= 12 inches
IceAccum Days 1-3 0.1 inch 0.2 inch 0.4 inch
    Ice < 0.5 inches Ice < 1.0 inch Ice >= 1.0 inch
SnowRatio Days 1-3 N/A    
         

Severe

Severe Weather Parameters Severe Weather Warning Techniques Convection Allowing Models Warngen Training

Lightning


Marine

Unique Meteorology of the Middle Texas Waters Coastal Currents and Waves Marine Models

Numerical Weather Prediction

Operational NWP Models Ensembles, Anomalies, and Analogs

Flash Flood/Heavy Rain


Winter

Synoptic Patterns Associated with the 6-8 January 2017 South Texas Cold Air Outbreak Event

BUFKIT

Mesoscale and Storm-Scale (Deterministic and Ensembles)


Synoptic


Ensembles


Marine


Tropical Cyclone


Other

Click the image above or the images below to view them in full-size.

GOES-16


GLM


RGB


Miscellaneous Links

WFO CRP BOIVerify Statistics
Summary Consensus WModel CONSMOS