1

Air Quality

WRF NMM/ARWWorkstation WRF

WRF: ARW, NMMETA, RSM GFS, Canadian Global Model

Regional NAMWRF NMM

North American Ensemble Forecast System

Hurricane GFDLHWRF

GlobalForecastSystem

Dispersion

ARL/HYSPLIT

Forecast

Severe Weather

Rapid Refreshfor Aviation

Climate ForecastSystem

Short-RangeEnsemble Forecast

NOAA’s Model Production Suite

GFS MOM4NOAH Sea Ice

NOAH Land Surface Model

Coupled

Global DataAssimilation

OceansHYCOM

WaveWatch III

NAM/CMAQ

1

Regi

onal

DA

Satellites + Radar99.9%

~2B Obs/Day

NOS – OFSGreat Lakes

Northern Gulf of Mexico

Bays• Chesapeake• Tampa • Delaware

SpaceWeather

ENLIL

Regi

onal

DA

• July 2012 was another warmer- and drier-than-average month (warmest and 28th driest July on record, based on data back to 1895) when weather conditions are averaged across the country.

• Nationally, the moderate-to-exceptional (D1-D4) drought footprint increased to about 53 percent of the country during July while the percentage in the abnormally dry to exceptional drought category generally held steady at about 71 percent.

• About 19 percent of the country was in the worst drought categories (D3-D4, extreme to exceptional drought), more than double the percentage from June.

2

Drought Spreads in U.S.

Est. rainfall totals6/23-27