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November 15 Weather Quiz

November 15, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers at the bottom of the page

1. Visible satellite pictures can show:
(a) Clouds (b) Lake ice (c) Snow cover (d) All of the above

2. How fast can frostbite occur with a wind chill of -20°F?
(a) 10 minutes (b) 30 minutes (c) 1 hour (d) 2 hours

3. Cloudiest November location in US outside of Alaska:
(a) Buffalo, NY (b) Minneapolis, MN (c) Sault Ste. Marie (d) Seattle, WA

4. Author of first European written account of a hurricane:
(a) Columbus (b) Darwin (c) King George (d) Newton

5. Subtracting the average daily temperature from 65°F calculates:
(a) Cooling Degree Days (b) Dew point (c) Heating Degree Days (d) Wind chill

6. Cirrus clouds mainly contain:
(a) Dust  (b) Ice crystals (c) Pollution (d) Raindrops

7. Minimum ice thickness necessary for ice fishing:
(a) 1 inch (b) 2 inches (c) 4 inches (d) 8 inches

8. Number of Atlantic hurricanes in 2012:
(a) 2 (b) 5  (c) 8 (d) 10

Answers: 1 (d) / 2 (b) / 3 (c) / 4 (a) / 5 (c) / 6 (b) / 7 (c) / 8 (d)

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November 1 Weather Quiz

November 1, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers are available at the bottom of the page

1. Gordon Lightfoot sang about this shipwreck due to the gales of November:
(a) Andrea Doria (b) Andrea Gail (c) Edmund Fitzgerald (d) Titanic

2. Seasonal affective disorder (SAD) is believed to be caused by:
(a) Cold temperatures (b) Lack of daylight (c) Too much sunshine (d) Winter winds

3. Which forecast indicates no accumulation expected?
(a) Snow (b) Snow flurries (c) Snow showers (d) Snow squalls

4. Seasonal weather changes are caused by:
(a) Alignment of planets (b) Moon (c) Solar cycles (d) Tilt of Earth’s axis

5. A layered cloud found in the lower levels of the atmosphere:
(a) Cirrostratus (b) Contrail (c) Cumulus (d) Stratus

6. What is measured in millibars?
(a) Air pressure (b) Cloud height (c) Power of sunlight (d) Wind speed

7. Warm northward Atlantic Ocean current that affects Europe’s weather:
(a) Gulf Stream (b) Humboldt Current (c) Jet Stream (d) Trade Winds

8. What is the normal monthly snowfall for Chicago in November?
(a) Trace (b) 1.1″ (c) 2.4″ (d) 3.4″

Answers: 1 (c) / 2 (b) / 3 (b) / 4 (d) / 5 (d) / 6 (a) / 7 (a) / 8 (c)

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Hurricane Sandy’s Expected Impacts

October 29, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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With Hurricane Sandy bearing down on the East Coast, here’s a look at some of the impacts expected by NOAA’s National Hurricane Center:

Hurricane force winds have speeds of 74mph or greater.

 

Tropical Storm force winds have speeds of 39 mph or greater.

 

 

WTNT33 KNHC 291439
TCPAT3

BULLETIN
HURRICANE SANDY ADVISORY NUMBER  29
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182012
1100 AM EDT MON OCT 29 2012 Get an Update

...SANDY FORECAST TO TURN NORTHWESTWARD SOON...
...EXPECTED TO BRING LIFE-THREATENING STORM SURGE AND COASTAL
HURRICANE WINDS PLUS HEAVY APPALACHIAN SNOWS...

SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...37.5N 71.5W
ABOUT 205 MI...330 KM SE OF ATLANTIC CITY NEW JERSEY
ABOUT 260 MI...415 KM SSE OF NEW YORK CITY
MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H
PRESENT MOVEMENT...NNW OR 330 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES

WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

THE BERMUDA WEATHER SERVICE HAS DISCONTINUED THE TROPICAL STORM
WARNING FOR BERMUDA.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* NORTH OF SURF CITY TO DUCK NORTH CAROLINA
* PAMLICO AND ALBEMARLE SOUNDS

IN ADDITION...HURRICANE-FORCE WINDS ARE EXPECTED ALONG PORTIONS OF
THE COAST BETWEEN CHINCOTEAGUE VIRGINIA AND CHATHAM MASSACHUSETTS.
THIS INCLUDES THE TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT...
THE MIDDLE AND UPPER CHESAPEAKE BAY...DELAWARE BAY...AND THE COASTS
OF THE NORTHERN DELMARVA PENINSULA...NEW JERSEY...THE NEW YORK CITY
AREA...LONG ISLAND...CONNECTICUT...AND RHODE ISLAND.

TROPICAL-STORM-FORCE WINDS ARE EXPECTED NORTH OF CHATHAM TO
MERRIMACK RIVER MASSACHUSETTS...THE LOWER CHESAPEAKE BAY...AND
SOUTH OF CHINCOTEAGUE TO DUCK NORTH CAROLINA...THE NORTHERN
ENDPOINT OF THE TROPICAL STORM WARNING.

OTHER COASTAL AND INLAND WATCHES AND WARNINGS ARE IN EFFECT FOR
THESE AREAS. PLEASE SEE STATEMENTS FROM LOCAL NATIONAL WEATHER
SERVICE FORECAST OFFICES.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE
MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE
FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE
THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.

DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 1100 AM EDT...1500 UTC...THE CENTER OF HURRICANE SANDY WAS
LOCATED NEAR LATITUDE 37.5 NORTH...LONGITUDE 71.5 WEST. SANDY IS
MOVING TOWARD THE NORTH-NORTHWEST NEAR 18 MPH...30 KM/H. A TURN
TOWARD THE NORTHWEST IS EXPECTED SOON...FOLLOWED BY A TURN TOWARD
THE WEST-NORTHWEST TONIGHT. ON THE FORECAST TRACK... THE CENTER OF
SANDY IS EXPECTED TO MAKE LANDFALL ALONG OR JUST SOUTH OF THE
SOUTHERN NEW JERSEY COAST THIS EVENING OR TONIGHT.

REPORTS FROM AN AIR FORCE HURRICANE HUNTER AIRCRAFT INDICATE THAT
THE MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 90 MPH...150
KM/H...WITH HIGHER GUSTS. SANDY IS EXPECTED TO TRANSITION INTO A
FRONTAL OR WINTERTIME LOW PRESSURE SYSTEM PRIOR TO LANDFALL.
HOWEVER...THIS TRANSITION WILL NOT BE ACCOMPANIED BY A WEAKENING OF
THE SYSTEM...AND...IN FACT...A LITTLE STRENGTHENING IS POSSIBLE
DURING THIS PROCESS. SANDY IS EXPECTED TO WEAKEN AFTER MOVING
INLAND.

HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM...
MAINLY SOUTHWEST OF THE CENTER...AND TROPICAL-STORM-FORCE WINDS
EXTEND OUTWARD UP TO 485 MILES...780 KM. SUSTAINED WINDS TO
TROPICAL STORM FORCE ARE OCCURRING FROM LONG ISLAND SOUTHWARD ALONG
THE COASTS OF NEW JERSEY...DELAWARE...AND EASTERN VIRGINIA...AND
EXTEND AS FAR INLAND AS THE CENTRAL AND SOUTHERN CHESAPEAKE BAY AND
DELAWARE BAY. A WEATHERFLOW REPORT INDICATES A SUSTAINED WIND OF 53
MPH...85 KM/H...WITH A GUST TO 63 MPH...102 KM/H...HAS RECENTLY
OCCURRED ON LONG ISLAND AT EATONS NECK NEW YORK.

THE ESTIMATED MINIMUM CENTRAL PRESSURE RECENTLY REPORTED BY
RECONNAISSANCE AIRCRAFT WAS 943 MB...27.85 INCHES.

HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS...OR GALE-FORCE WINDS...ARE ALREADY
OCCURRING OVER PORTIONS OF THE MID-ATLANTIC STATES FROM NORTH
CAROLINA NORTHWARD TO LONG ISLAND. GALE-FORCE WINDS ARE EXPECTED TO
CONTINUE TO SPREAD OVER OTHER PORTIONS OF THE MID-ATLANTIC
COAST...NEW YORK CITY...AND SOUTHERN NEW ENGLAND TODAY.
HURRICANE-FORCE WINDS COULD REACH THE MID-ATLANTIC STATES...
INCLUDING NEW YORK CITY AND LONG ISLAND...BY THIS EVENING. WINDS
AFFECTING THE UPPER FLOORS OF HIGH-RISE BUILDINGS WILL BE
SIGNIFICANTLY STRONGER THAN THOSE NEAR GROUND LEVEL.

STORM SURGE...THE COMBINATION OF AN EXTREMELY DANGEROUS STORM SURGE
AND THE TIDE WILL CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE
FLOODED BY RISING WATERS. THE WATER COULD REACH THE FOLLOWING
DEPTHS ABOVE GROUND IF THE PEAK SURGE OCCURS AT THE TIME OF HIGH
TIDE...

NC NORTH OF SURF CITY INCLUDING PAMLICO/ALBEMARLE SOUNDS...4 TO 6 FT
SE VA AND DELMARVA INCLUDING LOWER CHESAPEAKE BAY...2 TO 4 FT
UPPER AND MIDDLE CHESAPEAKE BAY...1 TO 3 FT
LONG ISLAND SOUND...RARITAN BAY...AND NEW YORK HARBOR...6 TO 11 FT
ELSEWHERE FROM OCEAN CITY MD TO THE CT/RI BORDER...4 TO 8 FT
CT/RI BORDER TO THE SOUTH SHORE OF CAPE COD INCLUDING BUZZARDS
BAY AND NARRAGANSETT BAY...3 TO 6 FT
CAPE COD TO THE MA/NH BORDER INCLUDING CAPE COD BAY...2 TO 4 FT
MA/NH BORDER TO THE U.S./CANADA BORDER...1 TO 3 FT

SURGE-RELATED FLOODING DEPENDS ON THE RELATIVE TIMING OF THE SURGE
AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER SHORT DISTANCES.
GIVEN THE LARGE WIND FIELD ASSOCIATED WITH SANDY...ELEVATED WATER
LEVELS COULD SPAN MULTIPLE TIDE CYCLES RESULTING IN REPEATED AND
EXTENDED PERIODS OF COASTAL AND BAYSIDE FLOODING.  IN ADDITION...
ELEVATED WATERS COULD OCCUR FAR REMOVED FROM THE CENTER OF SANDY.
FURTHERMORE...THESE CONDITIONS WILL OCCUR REGARDLESS OF WHETHER
SANDY IS A TROPICAL OR POST-TROPICAL CYCLONE.  FOR INFORMATION
SPECIFIC TO YOUR AREA...PLEASE SEE PRODUCTS ISSUED BY YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE.

RAINFALL...RAINFALL TOTALS OF 3 TO 6 INCHES ARE EXPECTED OVER FAR
NORTHEASTERN NORTH CAROLINA WITH ISOLATED MAXIMUM TOTALS OF 8
INCHES POSSIBLE. RAINFALL AMOUNTS OF 4 TO 8 INCHES ARE EXPECTED
OVER PORTIONS OF THE MID ATLANTIC STATES...INCLUDING THE DELMARVA
PENINSULA...WITH ISOLATED MAXIMUM AMOUNTS OF 12 INCHES POSSIBLE.
RAINFALL AMOUNTS OF 1 TO 3 INCHES WITH ISOLATED MAXIMUM AMOUNTS OF
5 INCHES ARE POSSIBLE FROM THE SOUTHERN TIER OF NEW YORK STATE
NORTHEASTWARD THROUGH NEW ENGLAND.

SNOWFALL..SNOW ACCUMULATIONS OF 2 TO 3 FEET ARE EXPECTED IN THE
MOUNTAINS OF WEST VIRGINIA WITH LOCALLY HIGHER TOTALS TODAY THROUGH
WEDNESDAY. SNOWFALL OF 1 TO 2 FEET IS EXPECTED IN THE MOUNTAINS OF
SOUTHWESTERN VIRGINIA TO THE KENTUCKY BORDER...WITH 12 TO 18 INCHES
OF SNOW EXPECTED IN THE MOUNTAINS NEAR THE NORTH CAROLINA/TENNESSEE
BORDER AND IN THE MOUNTAINS OF WESTERN MARYLAND.

SURF...DANGEROUS SURF CONDITIONS WILL CONTINUE FROM FLORIDA THROUGH
NEW ENGLAND FOR THE NEXT COUPLE OF DAYS.

NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...200 PM EDT.
NEXT COMPLETE ADVISORY...500 PM EDT.

$$
FORECASTER STEWART

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October 25 Weather Quiz

October 25, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers available at the bottom of the page

1. Lake effect snow tends to be heaviest where?
(a) Downwind shores (b) Middle of the lake (c) Upwind shores (d) 100 miles inland

2. Name of the first successful weather satellite launched April 1, 1960:
(a) CIRRUS-1 (b) GOES-1 (c) POES-1 (d) TIROS-1

3. Phenomenon expected to influence this winter’s weather:
(a) El Nino (b) Hadley Cell (c) La Nina (d) Northern Lights

4. Wind cools exposed skin below the air temperature by:
(a) Condensation (b) Evaporation (c) Slowing heart rate (d) Slowing respiration

5. A Panhandle Hook refers to what type of storm from Texas and Oklahoma?
(a) Dust storm (b) Hurricane (c) Snowstorm (d) Tornado

6. On average, how much water is in 10 inches of snow?
(a) 0.01″ (b) 0.10″ (c) 1.00″ (d) 10.00″

7. The lowest layer of the Earth’s atmosphere is called:
(a) Mesosphere (b) Stratosphere (c) Thermosphere (d) Troposphere

8. Deadly fog that forms in California’s Central Valley in fall and winter:
(a) Golden Gate Fog (b) Lake Tahoe Fog (c) Santa Ana Fog (d) Tule Fog

Answers: 1 (a) / 2 (d) / 3 (a) / 4 (b) / 5 (c) / 6 (c) / 7 (d) / 8 (d)

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October 18 Weather Quiz

October 18, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers at the bottom of the page

1. Cloud names that start with alto are ___ clouds.
(a) fog (b) high level (c) low level (d) mid level

2. What is the normal October snowfall for Fairbanks, Alaska?
(a) 3.0″ (b) 6.5″ (c) 12.5″ (d) 15.0″

3. Who is considered the father of meteorology?
(a) Aristotle (b) Benjamin Franklin (c) Plato (d) Socrates

4. Amount of rain too light to measure is called:
(a) Dash (b) Glaze (c) Haze (d) Trace

5. Diagram that shows the frequency and strength of winds:
(a) Isopleth (b) Wind plot (c) Wind radii (d) Wind rose

6. International code used to report surface weather observations:
(a) LIDAR (b) METAR (c) PIREP (d) SONAR

7. Weather radar range is limited most by:
(a) Clouds (b) Daylight (c) Earth’s curvature (d) Permits

8. Sustained wind speeds in a gale are over:
(a) 30mph (b) 39mph (c) 74mph (d) 100mph

Answers: 1 (d) / 2 (c) / 3 (a) / 4 (d) / 5 (d) / 6 (b) / 7 (c) / 8 (b)

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October 10 Weather Quiz

October 10, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers available at the bottom of the page

1. Name of winds that bring extreme wildfire conditions to California:
(a) Santa Ana (b) Santa Barbara (c) San Diego (d) Santa Rosa

2. When 5/8 to 7/8 of the sky is covered, cloud cover is described as:
(a) Broken (b) Clear (c) Fair (d) Overcast

3. Weather systems in the central United States most often move:
(a) East to West (b) North to South (c) South to North (d) West to East

4. Title for a book and movie based on October, 1991 New England storm:
(a) Andrea Gail (b) Nor’easter (c) Over Open Water (d) Perfect Storm

5. On a clear, calm morning the coldest temperatures will tend to be:
(a) In a valley (b) In city centers (c) On a hilltop (d) Over open water

6. Most common severe weather associated with a radar bow echo:
(a) Hail (b) Flooding (c) Straight-line winds (d) Tornado

7. Slang for an inaccurate forecast or unsuccessful storm chase:
(a) Bummer (b) Bust (c) Flop (d) Flunk

8. Freshwater freezes at what temperature on the Celsius scale?
(a) -10° (b) 10° (c) 0° (d) 32°

Answers: 1 (a) / 2 (a) / 3 (d) / 4 (d) / 5 (a) / 6 (c) / 7 (b) / 8 (c)

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September 27 Weather Quiz

September 27, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers at the bottom of the page

1. Record Atlantic tropical cyclone season with 27 named storms:
(a) 1936 (b) 1983 (c) 2005 (d) 2007

2. Instrument dropped to measure conditions in hurricanes:
(a) Dropsonde (b) Hurrisonde (c) Radiosonde (d) Thermometer

3. Blobs of color on a radar image are called:
(a) Bounceback (b) Echoes (c) Markers (d) Spots

4. Largest hailstone in the U.S. had a diameter of:
(a) 3 inches (b) 5 inches (c) 7 inches (d) 12 inches

5. Greatest daily September snowfall for Ironwood, Michigan:
(a) 1.0 inches (b) 3.5 inches (c) 4.0 inches (d) 6.5 inches

6. “Normal” temperatures are based upon data from:
(a) 1891-2000 (b) 1959-2011 (c) 1981-2010 (d) 1999-2010

7. A line connecting points with equal temperatures is called:
(a) Isodrosotherm (b) Isohyet (c) Isotach (d) Isotherm

8. The average temperature of a bolt of lightning is around:
(a) 500°F (b) 50,000°F (c) 500,000°F (d) 5,000,000°F

Answers: 1 (c) / 2 (a) / 3 (b) / 4 (c) / 5 (d) / 6 (c) / 7 (d) / 8 (b)

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September 13 Weather Quiz

September 13, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers available at the bottom of the page

1. What year did NOAA begin using men’s names for tropical storms?
(a) 1938 (b) 1956 (c) 1979 (d) 1983

2. How fast do raindrops fall?
(a) 7 to 18mph (b) 23 to 29 mph (c) 50 to 54mph (d) 70 to 75mph

3. 1996 movie about storm chasers:
(a) Chasers (b) Tornado (c) Twister (d) Wizard of Oz

4. Name of NOAA’s new weather and climate supercomputer:
(a) Brutus (b) Kelvin (c) Ozone (d) Stratus

5. Which weather condition inhibits frost formation?
(a) Clear sky (b) Cloudy sky (c) Dry air (d) Light winds

6. Name of the National Weather Service radar network:
(a) DOPRAD (b) NEXRAD (c) NORAD (d) SATRAD

7. Astronomical fall begins with what event?
(a) Autumnal Equinox (b) Fall Solstice (c) First Frost (d) Vernal Equinox

8. Which of the following can cause a hurricane to strengthen?
(a) Cooler water (b) First frost (c) Strong wind shear (d) Warm water

Answers: 1 (c) / 2 (a) / 3 (c) / 4 (d) / 5 (b) / 6 (b) / 7 (a) / 8 (d)

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September 6 Weather Quiz

September 6, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Answers available at the bottom

1. The most recent category 5 hurricane at landfall in the United States:
(a) Andrew, 1992 (b) Camile, 1969 (c) Katrina, 2005 (d) Wilma, 2005

2. Storm spotter slang for driving through heavy rain to center of storm:
(a) Center shot (b) Core punch (c) Hail dodge (d) Tower jump

3. “Nimbo” in “nimbostratus” means the cloud is:
(a) Dark (b) Raining (c) Tall (d) Thick

4. What instrument measures air pressure?
(a) Anemometer (b) Barometer (c) Hygrometer (d) Sling Psychrometer

5. 32° Fahrenheit is equal to:
(a) 20° Celsius (b) 4° Celsius (c) 0° Celsius (d) -10° Celsius

6. Which condition does NOT cause the leaves to change colors?
(a) Cooler temps (b) Less chlorophyll (c) Less sunlight (d) Strong winds

7. In the forecast, “Tonight” refers to:
(a) 4pm to 8am (b) 6pm to 6am (c) 9pm to 7am (d) Sunset to sunrise

8. Nickname for Air Force Reserve squadron that flies into hurricanes:
(a) Eyewall Cowboys (b) Hurricane Chasers (c) Hurricane Hunters (d) Interceptors

Answers: 1 (a) / 2 (b) / 3 (b) / 4 (b) / 5 (c) / 6 (d) / 7 (d) / 8 (c)

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Isaac Becomes a Hurricane

August 28, 2012

Written by Don Moldenhauer, My-Cast Meteorologist

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Isaac intensified into a hurricane as it approached the northern Gulf Coast late Tuesday morning.  The storm has been ingesting dry air at mid levels aloft and that has kept it from strengthening as fast as previously expected.  Even though Isaac’s winds may not increase much more, it still presents a serious threat due to storm surge and heavy rainfall.  Since Isaac is such a large storm, damaging winds will cover a larger area and last longer.

Hurricane Isaac – Tuesday Morning – NOAA

BULLETIN
HURRICANE ISAAC INTERMEDIATE ADVISORY NUMBER  30A...RETRANSMITTED
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012
100 PM CDT TUE AUG 28 2012 Get Update

...HURRICANE ISAAC MOVING NORTHWESTWARD TOWARD THE MOUTH OF THE
MISSISSIPPI RIVER...FLOODING FROM STORM SURGE AND RAINFALL
EXPECTED...

SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...28.4N 88.7W
ABOUT 55 MI...85 KM SSE OF THE MOUTH OF THE MISSISSIPPI RIVER
ABOUT 135 MI...220 KM SE OF NEW ORLEANS LOUISIANA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...975 MB...28.79 INCHES

WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* EAST OF MORGAN CITY LOUISIANA TO THE MISSISSIPPI-ALABAMA BORDER...
INCLUDING METROPOLITAN NEW ORLEANS...LAKE PONTCHARTRAIN...AND LAKE
MAUREPAS

A HURRICANE WATCH IS IN EFFECT FOR...
* INTRACOASTAL CITY TO MORGAN CITY LOUISIANA

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* THE MISSISSIPPI-ALABAMA BORDER TO DESTIN FLORIDA
* MORGAN CITY TO CAMERON LOUISIANA

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* EAST OF HIGH ISLAND TEXAS TO JUST WEST OF CAMERON LOUISIANA

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE AND
PROPERTY SHOULD BE RUSHED TO COMPLETION.

A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA.

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA.

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST
OFFICE. 

DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 100 PM CDT...1800 UTC...THE CENTER OF HURRICANE ISAAC WAS LOCATED
BY AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT NEAR LATITUDE
28.4 NORTH...LONGITUDE 88.7 WEST. ISAAC IS MOVING TOWARD THE
NORTHWEST NEAR 10 MPH...17 KM/H. A NORTHWESTWARD MOTION AT A
SLIGHTLY SLOWER SPEED IS EXPECTED OVER THE NEXT DAY OR TWO. ON THE
FORECAST TRACK...THE CENTER OF HURRICANE ISAAC SHOULD REACH THE
COASTLINE OF SOUTHEASTERN LOUISIANA AS EARLY AS THIS EVENING.

MAXIMUM SUSTAINED WINDS ARE NEAR 75 MPH...120 KM/H...WITH HIGHER
GUSTS.  ISAAC IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE. SOME ADDITIONAL STRENGTHENING IS FORECAST
UNTIL ISAAC MAKES LANDFALL. GRADUAL WEAKENING IS EXPECTED AFTER
LANDFALL OCCURS.

HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 60 MILES...95 KM...
NORTHEAST AND EAST OF THE CENTER. TROPICAL-STORM-FORCE WINDS EXTEND
OUTWARD UP TO 185 MILES...295 KM FROM THE CENTER.
TROPICAL-STORM-FORCE WINDS ARE OCCURRING AT THE MOUTH OF THE
MISSISSIPPI RIVER...WHERE A NOAA OBSERVING SITE AT SOUTHWEST PASS
LOUISIANA RECENTLY MEASURED SUSTAINED WINDS OF 60 MPH...93
KM/H...AND A GUST TO 76 MPH...122 KM/H...AT AN ELEVATION OF 80
FEET.

THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY THE HURRICANE HUNTER
AIRCRAFT WAS 975 MB...28.79 INCHES.

HAZARDS AFFECTING LAND
----------------------
STORM SURGE...THE COMBINATION OF A STORM SURGE AND THE TIDE WILL
CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE FLOODED BY RISING
WATERS. THE WATER COULD REACH THE FOLLOWING DEPTHS ABOVE GROUND IF
THE PEAK SURGE OCCURS AT THE TIME OF HIGH TIDE...

* MISSISSIPPI AND SOUTHEASTERN LOUISIANA...6 TO 12 FT
* ALABAMA...4 TO 8 FT
* SOUTH-CENTRAL LOUISIANA...3 TO 6 FT
* FLORIDA PANHANDLE...3 TO 6 FT
* APALACHEE BAY...2 TO 4 FT
* REMAINDER OF FLORIDA WEST COAST...1 TO 3 FT

THE DEEPEST WATER WILL OCCUR ALONG THE IMMEDIATE COAST IN AREAS OF
ONSHORE WINDS.  SURGE-RELATED FLOODING DEPENDS ON THE RELATIVE
TIMING OF THE SURGE AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER
SHORT DISTANCES.  FOR INFORMATION SPECIFIC TO YOUR AREA...PLEASE
SEE PRODUCTS ISSUED BY YOUR LOCAL WEATHER SERVICE OFFICE.  NEAR THE
COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DANGEROUS WAVES.

WIND...TROPICAL STORM CONDITIONS ARE ALREADY OCCURRING NEAR THE
MOUTH OF THE MISSISSIPPI RIVER...AND WILL REACH OTHER PORTIONS OF
THE COASTLINE WITHIN THE TROPICAL STORM AND HURRICANE WARNING AREAS
BY LATE THIS AFTERNOON.  HURRICANE CONDITIONS ARE EXPECTED TO FIRST
REACH THE COAST THIS AFTERNOON.

RAINFALL...ISAAC IS EXPECTED TO PRODUCE TOTAL RAINFALL AMOUNTS OF
7 TO 14 INCHES...WITH POSSIBLE ISOLATED MAXIMUM AMOUNTS OF 20
INCHES...IN SOUTHEASTERN LOUISIANA...SOUTHERN MISSISSIPPI...
SOUTHERN ALABAMA...AND THE EXTREME WESTERN FLORIDA PANHANDLE.
THESE RAINS COULD RESULT IN SIGNIFICANT LOWLAND FLOODING.

TORNADOES...TORNADOES MAY OCCUR ALONG THE NORTHERN GULF COAST TODAY.

SURF...DANGEROUS SURF AND RIP CURRENT CONDITIONS WILL CONTINUE TO
AFFECT THE FLORIDA COASTLINE AND PORTIONS OF THE NORTHERN GULF COAST
FOR THE NEXT DAY OR SO.

NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...400 PM CDT.

$$
FORECASTER STEWART

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