Weather

Summary for Tropical Storm Lee (AT4/AL142017)

Weather - Hurricane Harvey - Fri, 09/22/2017 - 21:51
...LEE BECOMES A TROPICAL STORM ONCE AGAIN... As of 11:00 PM AST Fri Sep 22 the center of Lee was located near 31.5, -49.0 with movement N at 7 mph. The minimum central pressure was 1009 mb with maximum sustained winds of about 40 mph.

Tropical Storm Lee Public Advisory Number 19

Weather - Hurricane Harvey - Fri, 09/22/2017 - 21:51
...LEE BECOMES A TROPICAL STORM ONCE AGAIN...
Location: 31.5°N 49.0°W
Max sustained: 40 mph
Moving: N at 7 mph
Min pressure: 1009 mb

Issued at 1100 PM AST Fri Sep 22 2017

Spanish Language Public Advisory

Weather - Hurricane Harvey - Fri, 09/22/2017 - 19:22
Issued at 500 PM AST viernes 22 de septiembre de 2017

NHC Atlantic Tropical Weather Discussion

NWS Weather - Fri, 09/22/2017 - 19:00

000
AXNT20 KNHC 230000
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
800 PM EDT Fri Sep 22 2017

Tropical Weather Discussion for North America, Central America
Gulf of Mexico, Caribbean Sea, northern sections of South
America, and Atlantic Ocean to the African coast from the
Equator to 32N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 1800 UTC surface analysis and satellite imagery through
2216 UTC.

...SPECIAL FEATURES...

Hurricane Maria is centered near 23.8N 71.6W at 23/0000 UTC, or
about 256 nm E of the central Bahamas, or about 326 nm ESE of
Nassau, moving NNW at 8 kt. Minimum central pressure is 953 mb.
Maximum sustained wind speed is 110 kt with gusts to 135 kt.
Numerous moderate to strong convection is within 90 nm of the
center, except within 120 nm in the S quadrant. Scattered moderate
convection is elsewhere within 300 nm in the N quadrant, 210 nm
in the E quadrant, 150 nm in the S quadrant and 120 nm in the W
quadrant. Maria is forecast to only very slowly decrease in
intensity during the next couple of days while it begins to turn
more northward. Please see the latest NHC Public Advisory under
AWIPS/WMO headers MIATCPAT5/ WTNT35 KNHC and the complete NHC
Forecast/Advisory under AWIPS/WMO headers MIATCMAT5/WTNT25 KNHC
for the complete details.

Tropical Depression Lee is centered near 30.8N 48.9W at 22/2100
UTC, or about 817 nm E of Bermuda moving N at 6 kt. Estimated
minimum central pressure 1014 mb. Maximum sustained winds 30 kt
with gusts to 40 kt. Scattered moderate to strong convection is
within 60 nm in the NE semicircle and within 30 nm in the SW
semicircle of Lee. Additional scattered moderate convection is
located to the SE of Lee from 21N to 27N between 39W and 46W,
associated with a middle to upper level low. Lee has regenerated
over the central Atlantic and is forecast to gradually
strengthen, becoming a tropical storm tonight, while turning to
the NE and E over the next couple of days. Please see the latest
NHC Forecast/Advisory under AWIPS/WMO headers MIATCMAT4/WTNT24
KNHC for the complete details.

Post-Tropical Cyclone Jose is centered near 39.3N 69.1W at
22/2100 UTC, or about 122 nm SSE of Nantucket, Massachusetts,
stationary. Estimated minimum central pressure is 996 mb. Maximum
sustained winds are 40 kt with gusts to 50 kt. No deep convection
is present with Jose. Tropical storm conditions have diminished at
coastal locations, and thus the final advisory has been issued.
Please see the final NHC Forecast/Advisory under AWIPS/WMO
headers MIATCMAT2/WTNT22 KNHC for the complete details.

...TROPICAL WAVES...

A tropical wave is off the coast of Africa with axis extending
from 17N17W to 01N19W, moving W at 5 to 10 kt. Abundant moisture
is present with the tropical wave axis as measured by SSMI TPW
imagery. Isolated moderate convection is from 06N to 11N between
15W and 21W.

A tropical wave is in the central Atlantic with axis extending
from 19N49W to just offshore of the coast of French Guiana near
06N52W, moving W at 10 kt. Plentiful moisture is present near the
tropical wave axis as indicated by SSMI TPW imagery. Widely
scattered moderate convection is from 14N to 19N between 49W and
53W, with additional isolated activity within 510 nm E of the
tropical wave axis.

...ITCZ/MONSOON TROUGH...

The monsoon trough axis extends from the African coast near
14N16W to 06N26W to 05N32W. The intertropical convergence zone
axis extends from 05N32W to 06N49W. Besides the convection
mentioned in the tropical waves section, scattered moderate
convection is from 06N to 08N between 33W and 35W.

...DISCUSSION...

GULF OF MEXICO...

High pressure located over western Tennessee extends a ridge axis
to the SW to across coastal sections of Texas. This ridge axis is
maintaining gentle to moderate E to SE flow with mainly 1 to 3 ft
seas across the Gulf of Mexico. Isolated convection is present
with a middle to upper level trough extending from an upper low
over upstate South Carolina to the NE Gulf near 30N85W to the SW
Gulf near 22N94W. Additional convection is firing over the Florida
Peninsula with the assistance of daytime heating, however the
activity is diminishing with the arrival of sunset.

CARIBBEAN SEA...

A surface trough trails Hurricane Maria which is moving NNW away
from the N coast of Hispaniola extending from southern Haiti near
18N73W to 13N78W. Associated outer rainbands with Maria continue
to induce flash flooding over Puerto Rico although this activity
should gradually diminish during the next couple of days as Maria
continues to move away from the area. The remainder of the
Caribbean is fairly tranquil with gentle to moderate winds W of
the surface trough axis, and moderate to fresh easterly flow in
the E Caribbean E of the trough axis. Aloft, a middle to upper
level trough extends across the NW Caribbean with mainly dry and
stable air, while upper anticyclonic flow prevails elsewhere.

...HISPANIOLA...

Outer rainbands associated with Hurricane Maria, which continues
to move NNW away from the N coast of the island, continue to
support heavy rainfall and localized flash flooding. Activity
should gradually diminish during the next couple of days as Maria
continues away from the area.

ATLANTIC OCEAN...

Please refer to Special Features section for more information on
Hurricane Maria and Tropical Depression Lee.

Otherwise, a surface trough is over the NW portion of the SW N
Atlantic basin reaching from near 31N76W to between Grand Bahama
and the E coast of Florida. This trough is supporting scattered
thunderstorms from the western Bahamas to the Florida Peninsula.
Upper level anticyclonic flow dominates the basin, except between
46W and 56W where a mainly N to S middle to upper level trough is
present.

For additional information please visit
http://www.hurricanes.gov/marine

$$
Lewitsky

Categories: Weather

Spanish Language Public Advisory

Weather - Hurricane Harvey - Fri, 09/22/2017 - 16:11
Issued at 500 PM AST viernes 22 de septiembre de 2017

Tropical Depression Lee Graphics

Weather - Hurricane Harvey - Fri, 09/22/2017 - 15:40

5-Day Uncertainty Track last updated Fri, 22 Sep 2017 20:40:45 GMT


Wind Speed Probabilities last updated Fri, 22 Sep 2017 20:40:45 GMT

Summary for Tropical Depression Lee (AT4/AL142017)

Weather - Hurricane Harvey - Fri, 09/22/2017 - 15:35
...LEE REGENERATES OVER THE CENTRAL ATLANTIC OCEAN... ...NO THREAT TO LAND... As of 5:00 PM AST Fri Sep 22 the center of Lee was located near 30.8, -48.9 with movement N at 7 mph. The minimum central pressure was 1014 mb with maximum sustained winds of about 35 mph.

Tropical Depression Lee Public Advisory Number 18

Weather - Hurricane Harvey - Fri, 09/22/2017 - 15:35
...LEE REGENERATES OVER THE CENTRAL ATLANTIC OCEAN... ...NO THREAT TO LAND...
Location: 30.8°N 48.9°W
Max sustained: 35 mph
Moving: N at 7 mph
Min pressure: 1014 mb

Issued at 500 PM AST Fri Sep 22 2017

Tropical Depression Lee Information by ATCF XML Prototype

Weather - Hurricane Harvey - Fri, 09/22/2017 - 15:35
Issued at Fri, 22 Sep 2017 20:35:15 GMT. This is only a prototype and the file format may change without notice.

NHC Atlantic Tropical Weather Discussion

NWS Weather - Fri, 09/22/2017 - 12:54

000
AXNT20 KNHC 221754
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
154 PM EDT Fri Sep 22 2017

Tropical Weather Discussion for North America, Central America
Gulf of Mexico, Caribbean Sea, northern sections of South
America, and Atlantic Ocean to the African coast from the
Equator to 32N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 1200 UTC surface analysis and satellite imagery through
1715 UTC.

...SPECIAL FEATURES...

Hurricane Maria centered near 22.8N 71.2W at 22/1800 UTC, or
about 78 nm N of Grand Turk Island, moving NNW at 8 kt. Minimum
central pressure is 959 mb. Maximum sustained wind speed is 110
kt with gusts to 135 kt. Numerous strong convection is within 90
nm of the center. Scattered moderate convection is elsewhere
within 180 nm of the center. The Turks and Caicos Islands and
southeastern Bahamas are presently under a hurricane warning. The
central Bahamas are under a tropical storm warning. Please see the
latest NHC Public Advisory under AWIPS/WMO headers
MIATCPAT5/WTNT35 KNHC and the complete NHC Forecast/Advisory under
AWIPS/WMO headers MIATCMAT5/WTNT25 KNHC for the complete details.

Post-Tropical Cyclone Jose is centered near 39.3N 69.3W at
22/1800 UTC, or about 117 nm SSE of Nantucket, Massachusetts,
stationary. Estimated minimum central pressure is 995 mb. Maximum
sustained winds are 40 kt with gusts to 50 kt. Dry and stable air
prevails near the center as Jose is over cold SSTs, however some
scattered moderate convection is within 135 nm E of Jose and 300
nm W of it. Jose is expected to meander well off the coast of New
England for the next several days. Please see the latest NHC
Public Advisory under AWIPS/WMO headers MIATCPAT2/WTNT32 KNHC and
the complete NHC Forecast/Advisory under AWIPS/WMO headers
MIATCMAT2/WTNT22 KNHC for additional details.

...TROPICAL WAVES...

A tropical wave is off the coast of Africa with axis extending
from 17N16W to 05N18W, moving W at 5-10 kt. The wave is under a
moist area as seen by SSMI TPW imagery. Isolated moderate
convection is from 05N-12N between 12W-20W.

A tropical wave is in the central Atlantic with axis extending
from 20N42W to 06N44W, moving W at 10 kt. The wave is under a
moist area as seen by SSMI TPW imagery. Widely scattered moderate
convection is within 240 nm of the axis.

...ITCZ/MONSOON TROUGH...

The monsoon trough axis extends from the African coast near
12N16W to 07N24W to 06N30W. The intertropical convergence zone
axis extends from 06N30W to 08N49W, then resumes from 10N52W to
11N60W. Besides the convection mentioned in the tropical wave
section, scattered moderate convection is from 05N- 08N between
31W-33W. Widely scattered moderate convection is from 06N-11N
between 42W-46W.

...DISCUSSION...

GULF OF MEXICO...

A 1020 mb high is centered over North Carolina near 35N82W.
Surface ridging is over the N Gulf of Mexico N of 24N. Scattered
moderate convection is over portions of S Florida, and the SE Gulf
of Mexico. A surface trough is over the Bay of Campeche from
21N94W to 17N92W. scattered showers are within 90 nm of the
trough. Surface winds over most of the Gulf are only 5-10 kt. The
Bay of Campeche has some 15 kt winds. In the upper levels, an
upper level trough is over the Gulf with axis along 86W. Upper
level moisture is S of 26N, while strong moisture is N of 26N.
Expect additional convection over Florida over the next 24 hours.

CARIBBEAN SEA...

The core of Hurricane Maria is N of the Turks and Caicos Islands,
however, the outer rain bands continue over Puerto Rico and
Dominican Republic, with the potential for flash flooding. Widely
scattered moderate convection is S of Puerto Rico from 14N-18N
between 65W-69W. The eastern extent of the Pacific monsoon trough
extends across Costa Rica, Panama through Colombia supporting
isolated showers over the SW Caribbean S of 12N. Of note in the
upper levels, an upper level trough is over the NW Caribbean with
axis along 86W. Some scattered showers are E of the trough axis
near Jamaica due to upper level diffluence.

...HISPANIOLA...

The Government of the Dominican Republic has discontinued all
warnings for the Dominican Republic. Tropical storm force winds
are now N of the island over the Atlantic. Scattered showers
remain over most of Hispaniola. Expect showers to continue for the
next 24 hours.

ATLANTIC OCEAN...

Please refer to Special Features section for more information on
Hurricane Maria and Post-Tropical Cyclone Jose. A 1016 mb low,
the remnants of Lee, is located near 30N49W. A surface trough
extends S from the low to 25N50W. Widely scattered moderate
convection is from 25N-31N between 47W-50W. The remainder of the
basin remains under the influence of a broad Bermuda-Azores high
centered north of the area. Of note in the upper levels, a large
upper level low is centered near 23N50W. Scattered moderate
convection is E of this center from 20N-26N between 41W-46W due
to upper level diffluence.

For additional information please visit
http://www.hurricanes.gov/marine

$$
Formosa

Categories: Weather

SPC Day 2 Fire Weather Outlook

Weather - Fire Weather - Fri, 09/22/2017 - 12:51
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1249 PM CDT Fri Sep 22 2017 Valid 231200Z - 241200Z ...NO CRITICAL AREAS... No changes to the previous outlook are needed. See discussion below for more details. ..Leitman.. 09/22/2017 .PREV DISCUSSION... /ISSUED 0135 AM CDT Fri Sep 22 2017/ ...Synopsis... A large-scale upper trough/low centered over the Great Basin will continue to move slowly eastward across the western CONUS on Day 2/Saturday. An upper ridge will persist over much of the eastern CONUS. While enhanced mid-level winds will remain present over portions of the Southwest into the High Plains Saturday afternoon, RH values behind a surface cold front are generally expected to remain above critical levels. Locally elevated fire weather conditions may occur across parts of northern AZ and southeastern UT where RH values could become lowered near 20% in conjunction with strong/gusty surface winds. However, only marginally receptive to unreceptive fuels across this region and cooler temperatures behind the surface cold front preclude the introduction of an elevated area at this time. ...Please see www.spc.noaa.gov/fire for graphic product... Read more
Categories: Weather

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