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1 year 11 months ago
MD 2171 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR EASTERN NEW MEXICO INTO THE OKLAHOMA AND TEXAS PANHANDLES
Mesoscale Discussion 2171
NWS Storm Prediction Center Norman OK
0443 PM CDT Thu Sep 21 2023
Areas affected...Eastern New Mexico into the Oklahoma and Texas
Panhandles
Concerning...Severe potential...Watch unlikely
Valid 212143Z - 212345Z
Probability of Watch Issuance...20 percent
SUMMARY...Thunderstorms will increase in coverage over the next few
hours, and a few strong to severe storms appear likely. Severe wind
and large hail will be the primary threats, but confidence in the
coverage/duration of this threat is limited and watch issuance is
not anticipated.
DISCUSSION...Convective initiation is well underway across central
to eastern NM within the left-exit region of an approaching upper
jet. This high-based activity is developing on the western fringe of
the low-level moisture plume over the Plains with dewpoints in the
upper 40s to low 50s and dewpoint depressions upwards of 40-50 F
noted in latest surface obs. Although buoyancy profiles are somewhat
meager (MLCAPE between 500-1000 J/kg), the deeply-mixed low-level
thermodynamic profile is conducive for strong to severe downburst
winds. Combined with weak low-level flow, this may favor
undercutting outflows and storm clustering with time, which limits
confidence in the duration of any particular strong/severe storm.
However, strong speed shear in the 0-6 km layer will support initial
cell organization with an attendant hail risk. The expectation over
the next several hours is for additional storms to develop across
eastern NM, slowly intensifying (with perhaps some
clustering/upscale growth) as they migrate into the TX/OK Panhandles
where low-level moisture improves. However, increasing inhibition
closer to the TX/western OK border and the onset of nocturnal
cooling later this evening may limit the eastward extent of the
threat.
..Moore/Thompson.. 09/21/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DDC...LUB...AMA...MAF...PUB...ABQ...EPZ...
LAT...LON 33500539 33750532 36570391 36760369 37300238 37370157
37160094 36540052 35430051 34140145 33480266 33120417
33040464 33020500 33100523 33300532 33500539
Read more
1 year 11 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0359 PM CDT Thu Sep 21 2023
Valid 231200Z - 291200Z
...Day 3/Saturday...
On the backside of a midlevel low tracking northeastward across the
northern Plains, strong deep-layer northwesterly flow will
overspread the northern/central High Plains. As a result, 25+ mph
sustained west-northwesterly surface winds (with higher gusts) are
expected across portions of southern WY, western NE, and far
northeastern CO. While these winds could briefly overlap 20-30
percent RH over the area, marginal fuels should generally limit the
fire-weather risk.
...Days 4-5/Sunday-Monday...
Southwesterly midlevel flow will gradually strengthen across the
Northwest on Days 4-5/Sunday-Monday, favoring breezy southwesterly
surface winds across portions of northeastern CA, northwestern NV,
and far southeastern OR -- where 15-20 percent RH is possible. With
that said, fuels are generally unsupportive of large fires over
these areas -- precluding Critical probabilities.
...Days 6-8/Tuesday-Thursday...
The potential for dry/breezy conditions should focus over portions
of the Southwest and Great Basin late in the extended forecast
period, and potentially over the High Plains depending on moisture
return. However, additional rainfall over already marginal fuels
across these areas cast uncertainty on the fire-weather risk.
..Weinman.. 09/21/2023
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
1 year 11 months ago
5-Day Uncertainty Track last updated Thu, 21 Sep 2023 20:41:17 GMT
Wind Speed Probabilities last updated Thu, 21 Sep 2023 21:35:02 GMT
NHC Webmaster
1 year 11 months ago
Issued at 200 PM PDT Thu Sep 21 2023
000
WTPZ43 KNHC 212040
TCDEP3
Tropical Storm Kenneth Discussion Number 10
NWS National Hurricane Center Miami FL EP132023
200 PM PDT Thu Sep 21 2023
Kenneth is a sheared tropical cyclone. The small area of active
convection associated with the storm has been displaced over 90 n mi
from its exposed low-level center by southwesterly shear. This
deteriorating satellite presentation has caused the intensity
estimates to decrease today. Based on a blend of the latest
objective and subjective Dvorak estimates, the initial intensity is
lowered to 35 kt.
Recent satellite images indicate Kenneth has begun its northward
turn, and the initial motion is north-northwestward at 330/6 kt. A
generally northward motion should continue for the next couple of
days as the system moves within the flow between a mid-level trough
to the northwest and a mid-level ridge over central Mexico. There
were no major changes to the track guidance this cycle, and the
latest NHC forecast is similar to the previous prediction. While
simulated satellite imagery from the global models suggest Kenneth
could produce intermittent bursts of sheared convection during the
next day or so, the environmental conditions (stronger shear,
progressively cooler SSTs, and a drier and more stable airmass) are
not conducive for sustained convection going forward. Based on these
factors and recent satellite trends, this forecast shows additional
weakening with post-tropical/remnant low status in 24 h.
FORECAST POSITIONS AND MAX WINDS
INIT 21/2100Z 17.9N 125.7W 35 KT 40 MPH
12H 22/0600Z 19.2N 126.0W 35 KT 40 MPH
24H 22/1800Z 20.9N 125.8W 30 KT 35 MPH...POST-TROP/REMNT LOW
36H 23/0600Z 22.3N 125.7W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 23/1800Z 23.4N 125.7W 20 KT 25 MPH...POST-TROP/REMNT LOW
60H 24/0600Z...DISSIPATED
$$
Forecaster Reinhart
NHC Webmaster
1 year 11 months ago
Issued at 2100 UTC THU SEP 21 2023
000
FOPZ13 KNHC 212040
PWSEP3
TROPICAL STORM KENNETH WIND SPEED PROBABILITIES NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL EP132023
2100 UTC THU SEP 21 2023
AT 2100Z THE CENTER OF TROPICAL STORM KENNETH WAS LOCATED NEAR
LATITUDE 17.9 NORTH...LONGITUDE 125.7 WEST WITH MAXIMUM SUSTAINED
WINDS NEAR 35 KTS...40 MPH...65 KM/H.
Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH)
PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME
HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME
WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS
CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST
...34 KT (39 MPH... 63 KM/H)...
...50 KT (58 MPH... 93 KM/H)...
...64 KT (74 MPH...119 KM/H)...
FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS
PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE
OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING
AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY)
(CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN
18Z THU AND THE FORECAST HOUR (CUMULATIVE PROBABILITY)
PROBABILITIES ARE GIVEN IN PERCENT
X INDICATES PROBABILITIES LESS THAN 1 PERCENT
PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN
THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT.
PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY
64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT.
- - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - -
FROM FROM FROM FROM FROM FROM FROM
TIME 18Z THU 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON
PERIODS TO TO TO TO TO TO TO
06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON 18Z TUE
FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
LOCATION KT
20N 125W 34 2 6( 8) X( 8) X( 8) X( 8) X( 8) X( 8)
$$
FORECASTER REINHART
NHC Webmaster
1 year 11 months ago
Issued at 200 PM PDT Thu Sep 21 2023
000
WTPZ33 KNHC 212039
TCPEP3
BULLETIN
Tropical Storm Kenneth Advisory Number 10
NWS National Hurricane Center Miami FL EP132023
200 PM PDT Thu Sep 21 2023
...KENNETH CONTINUES TO WEAKEN...
SUMMARY OF 200 PM PDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...17.9N 125.7W
ABOUT 1080 MI...1735 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NNW OR 330 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.
DISCUSSION AND OUTLOOK
----------------------
At 200 PM PDT (2100 UTC), the center of Tropical Storm Kenneth was
located near latitude 17.9 North, longitude 125.7 West. Kenneth is
moving toward the north-northwest near 7 mph (11 km/h). A northward
motion is expected to begin later tonight and continue through
Saturday.
Maximum sustained winds have decreased to near 40 mph (65 km/h)
with higher gusts. Additional weakening is forecast, and Kenneth is
expected to become a remnant low on Friday.
Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center.
The estimated minimum central pressure is 1002 mb (29.59 inches).
HAZARDS AFFECTING LAND
----------------------
None
NEXT ADVISORY
-------------
Next complete advisory at 800 PM PDT.
$$
Forecaster Reinhart
NHC Webmaster
1 year 11 months ago
...KENNETH CONTINUES TO WEAKEN...
As of 2:00 PM PDT Thu Sep 21
the center of Kenneth was located near 17.9, -125.7
with movement NNW at 7 mph.
The minimum central pressure was 1002 mb
with maximum sustained winds of about 40 mph.
NHC Webmaster
1 year 11 months ago
Issued at 2100 UTC THU SEP 21 2023
000
WTPZ23 KNHC 212039
TCMEP3
TROPICAL STORM KENNETH FORECAST/ADVISORY NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL EP132023
2100 UTC THU SEP 21 2023
NOTICE... LAND-BASED TROPICAL CYCLONE WATCHES AND WARNINGS ARE NO
LONGER INCLUDED IN THE TROPICAL CYCLONE FORECAST/ADVISORY...(TCM).
CURRENT LAND-BASED COASTAL WATCHES AND WARNINGS CAN BE FOUND IN THE
MOST RECENTLY ISSUED TROPICAL CYCLONE PUBLIC ADVISORY...(TCP).
TROPICAL STORM CENTER LOCATED NEAR 17.9N 125.7W AT 21/2100Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 330 DEGREES AT 6 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1002 MB
MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT.
34 KT....... 60NE 0SE 0SW 60NW.
12 FT SEAS.. 30NE 0SE 30SW 60NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
REPEAT...CENTER LOCATED NEAR 17.9N 125.7W AT 21/2100Z
AT 21/1800Z CENTER WAS LOCATED NEAR 17.5N 125.6W
FORECAST VALID 22/0600Z 19.2N 126.0W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 60NE 0SE 0SW 50NW.
FORECAST VALID 22/1800Z 20.9N 125.8W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 23/0600Z 22.3N 125.7W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
FORECAST VALID 23/1800Z 23.4N 125.7W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.
FORECAST VALID 24/0600Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.9N 125.7W
NEXT ADVISORY AT 22/0300Z
$$
FORECASTER REINHART
NHC Webmaster
1 year 11 months ago
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0249 PM CDT Thu Sep 21 2023
Valid 212000Z - 221200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
WESTERN KS AND WESTERN/CENTRAL NE...AND OVER PARTS OF SOUTHERN OK
AND NORTH TX...
...SUMMARY...
Widely scattered strong to severe thunderstorms are possible this
afternoon into tonight across parts of the southern and central
Plains.
...20Z Update...
...NE/KS...
Recent surface analysis places a low near the CO/NE/KS border
intersection, with a dryline extending southward across western KS.
As mentioned in recently issued MCD #2168, storm initiation appears
probable in the next couple of hours across parts of southwestern
Nebraska. The deepening surface low is supporting robust
southeasterly flow and strong low-level shear. Moderate westerly
flow exists atop this low-level southeasterly flow, supporting 30 to
40 kt of effective bulk shear. Strong buoyancy has also developed
ahead of the dryline, with recent mesoanalysis estimating 1500 to
2500 J/kg MLCAPE across western KS and western/central NE. The
overall environment supports supercells capable of all severe
hazards including large to very-large (1-3 in.) hail, severe wind
gusts (60-70 mph), and tornadoes. The tornado threat will generally
be maximized near the warm front where surface winds remain more
backed.
...Southern OK/North TX...
Despite widespread clouds, temperatures have reached the upper
80s/low 90s across much of the region. Dewpoints are in the upper
60s/low 70s, and this combination of temperatures and dewpoints is
supporting strong buoyancy. Recent mesoanalysis estimates MLCAPE is
around 2000-2500 J/kg. Vertical shear is modest, but sufficient for
some updraft organization. As such, a few strong to severe
thunderstorms remain possible, with large hail and damaging gusts as
the primary threats.
..Mosier.. 09/21/2023
.PREV DISCUSSION... /ISSUED 1112 AM CDT Thu Sep 21 2023/
...Central and Southern Plains...
Morning water vapor imagery shows a subtle shortwave trough crossing
the Rockies of central CO. This feature will move eastward and
provide weak large scale ascent across much of the central Plains
this afternoon and evening. Morning model solutions are diverse in
placement/timing of thunderstorm activity, but generally show a
larger envelope of potential risk. Therefore have expanded the MRGL
to include much more of the central and southern Plains.
...NE/KS...
A rather pronounced surface dryline is expected to develop later
today from western NE southward into western KS, with dewpoints in
the 60s and MLCAPE values of over 2500 J/kg to the east of the
boundary. Given the weak forcing and some cap, the areal coverage
of convective initiation is uncertain. However, any storm that
forms along this axis will have a conditional threat of very large
hail and a tornado or two. These storms may persist for several
hours after dark and track eastward into parts of north central KS
and central NE.
...OK/TX...
A weak sub-tropical shortwave trough is moving into west TX. Lift
ahead of this feature is resulting in a large region of accas and a
few showers and thunderstorms moving into southwest OK/northwest TX.
Continued daytime heating is expected to lead to convective
intensification by late afternoon across north TX and southern OK.
The strongest cells in this area may produce hail and gusty winds
for a few hours into this evening.
...Eastern NC...
The outer bands of the strengthening tropical system off the
southeast Atlantic coast are forecast to still be well offshore by
Fri/12z. Therefore will defer any increasing tornado risk to the
Day2 period.
Read more
1 year 11 months ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0207 PM CDT Thu Sep 21 2023
Valid 221200Z - 231200Z
The latest fuels information suggests that fine fuels have dried
sufficiently over portions of the mountains/I-25 corridor in
southern Colorado to support some fire potential. Given the
expectation for sustained southwesterly surface winds of 15-25 mph
(with higher gusts) and around 10 percent RH, the Elevated
highlights were expanded westward into this area. Over the southeast
Colorado plains, the Elevated highlights were trimmed as the latest
guidance suggests sustained surface winds will be too weak for an
appreciable fire-weather risk. For additional details, see the
previous discussion below.
..Weinman.. 09/21/2023
.PREV DISCUSSION... /ISSUED 0157 AM CDT Thu Sep 21 2023/
...Synopsis...
An upper low across eastern Oregon will start to fill during the day
Friday and eventually become a negatively tilted open wave across
the central/northern Rockies. As this upper-level pattern evolves,
lee troughing is expected, which will bring some breezy conditions
from the Southwest into the central Rockies and also the central
High Plains and the central Plains. Farther west in Arizona and
Utah, fuels are too moist to support fire spread. However, in the
plains across southeast Colorado and northeast New Mexico and
vicinity, some drier fuels are present. These fuels will likely dry
further with single-digit relative humidity. Therefore, an Elevated
area has been added for portions of the central High Plains for
Friday.
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
1 year 11 months ago
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook AMEND 1
NWS Storm Prediction Center Norman OK
0127 PM CDT Thu Sep 21 2023
Valid 231200Z - 241200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE CENTRAL/SOUTHERN PLAINS INTO PARTS OF MO/IA/SOUTHERN MN...
AMENDED TO ADD SEVERE PROBABILITIES OVER THE COASTAL MID-ATLANTIC
...SUMMARY...
Severe thunderstorms are possible on Saturday across parts of the
central and southern Plains into Iowa and Missouri.
...Coastal Mid-Atlantic...
Recently issued track of Potential Tropical Cyclone 16 brings it
onshore over coastal NC early Saturday morning, and then northward
into the Chesapeake Bay by Saturday evening. Recent guidance
suggests the warm sector to the north and east of the system's
center should penetrate far enough inland to support modest buoyancy
and deeper convective cores. Given the strong low to mid-level wind
fields, any updrafts that are able to deepen and mature could
produce tornadoes. Mesoscale details, in particular how much
buoyancy develops inland, remain uncertain enough to introducing
only a Marginal/Level 2 risk with this amendment.
-- PREVIOUS DISCUSSION --
...Great Plains into parts of MN/IA/MO...
A seasonably strong mid/upper-level cyclone is forecast to move
eastward across SD on Saturday. The primary surface low attendant to
this mid/upper cyclone is forecast to move from the central Plains
into the Dakotas as the system begins to occlude, while secondary
surface low development is possible along the trailing front across
the southern Plains.
Moderate to locally strong buoyancy is expected to develop across a
broad area of the Great Plains on Saturday, east of the cold front
and outside of any areas where outflow persists from morning
convection. One notable midlevel jet maximum is forecast to move
from the central Plains into the Dakotas, while a southern-stream
jet maximum will begin to impinge upon parts of the southern Plains.
Organized convection will be possible Saturday into Saturday night
across a broad region from the Great Plains into parts of MN/IA/MO,
with a mixture of supercells and organized clusters possible
along/east of a cold front. Initial development is most likely
closer to the mid/upper-level low across the central/northern
Plains, with storm development into parts of the southern Plains
expected by early Saturday evening. All severe hazards will be
possible, though primary storm mode and evolution of mesoscale
details remain uncertain at this forecast range.
...Eastern NC into the Mid Atlantic...
A surface low is forecast to move from near or just offshore of
eastern NC into parts of the Mid Atlantic on Saturday. Depending on
the westward extent of the track, richer low-level moisture may
spread into coastal areas of the Mid Atlantic region, potentially
accompanied by increasing low-level flow/shear and some threat for a
brief tornado or two. Depending on the ultimate track and intensity
of this system, severe probabilities may eventually be needed for
some part of this region.
..Mosier/Dean.. 09/21/2023
Read more
1 year 11 months ago
000
ABPZ20 KNHC 211745
TWOEP
Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 AM PDT Thu Sep 21 2023
For the eastern North Pacific...east of 140 degrees west longitude:
Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Kenneth, located about 1100 miles west-southwest
of the southern tip of the Baja California peninsula.
Central East Pacific:
A low pressure trough located several hundred miles south-southwest
of the southwestern coast of Mexico is producing a broad area of
showers and thunderstorms. Gradual development of this system is
possible over the next several days, and a tropical depression could
form by late this weekend or early next week while it moves
generally westward across the central and western part of the
eastern Pacific basin.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...medium...50 percent.
$$
Forecaster Pasch
NHC Webmaster
1 year 11 months ago
No watches are valid as of Wed Sep 20 22:31:02 UTC 2023.
1 year 11 months ago
No Mesoscale Discussions are in effect as of Wed Sep 20 22:31:02 UTC 2023.
1 year 11 months ago
The City of Kyle used 89% of its water for the entire year by the end of August and needed to purchase more water to supply the city through the remainder of 2023. San Marcos City Council voted to sell water to Kyle just as it did in 2022. San Marcos has been in stage 4 water restrictions since late August.
KUT News (Austin, Texas), Sept 20, 2023
1 year 11 months ago
The Maryland Department of the Environment put some northern counties in a drought warning rather than a drought watch. Counties in a drought warning include Baltimore, Carroll, Cecil, Frederick, Harford, Howard and Montgomery counties, except those areas served by Baltimore City or Washington Suburban Sanitary Commission public water systems. The shift to drought warning status was due to lower-than-normal stream flows and groundwater levels for this time of year. Washington, Allegany and Garret counties remained in a drought watch.
The Herald-Mail (Hagerstown, Md.), Sept 20, 2023
1 year 11 months ago
The Mississippi River has dropped so low that American Cruise Lines notified Vicksburg that its ships will not dock nearby and will dock downriver instead and bus passengers to Vicksburg. Low river levels deprive Vicksburg of tourism.
Water levels have fallen to near record levels a full month ahead of last year’s low water stages, according to the U.S. Army Corps of Engineers. The Mississippi River has fallen 15 feet in a month.
WAPT Channel 16 Online (Jackson, Miss.), Sept 20, 2023
1 year 11 months ago
5-Day Uncertainty Track last updated Wed, 20 Sep 2023 20:39:03 GMT
Wind Speed Probabilities last updated Wed, 20 Sep 2023 21:28:52 GMT
NHC Webmaster
1 year 11 months ago
Issued at 200 PM PDT Wed Sep 20 2023
870
WTPZ43 KNHC 202038
TCDEP3
Tropical Storm Kenneth Discussion Number 6
NWS National Hurricane Center Miami FL EP132023
200 PM PDT Wed Sep 20 2023
Kenneth's cloud pattern has not changed appreciably during the last
6 hours. The average of the latest TAFB and SAB Dvorak numbers is
45 kt. Most of the objective intensity estimates are a bit lower.
Based on the above data, the initial intensity is maintained at 45
kt for this advisory.
The center of Kenneth is estimated to be near the southern edge of
the central dense overcast. However, the current position is quite
uncertain. The initial motion is estimated at 290/9 kt. A turn to
the northwest and north-northwest is expected on Thursday between a
subtropical high centered over northwestern Mexico and a potent
mid- to upper-level trough to the northwest of Kenneth. The track
forecast has been adjusted a bit to the north of the previous NHC
track prediction, but not as far north as the latest consensus
models.
Kenneth is currently located in an environment that is favorable
enough for it to at least maintain its intensity over the next
12-24 hours. However, a more stable air mass is located just to
the north and northwest of the cyclone, as evidenced by scattered
low stratus clouds seen on GOES-18 satellite imagery, indicative of
a marine boundary layer. As Kenneth approaches the mid- to
upper-level trough over the next couple of days, strong
southwesterly wind shear will increasingly encroach on Kenneth.
Kenneth will also cross the 26C isotherm about the same time the
shear ramps up Thursday evening. Therefore, steady weakening is
forecast, and Kenneth should become a remnant low Friday night or
Saturday. The latest NHC intensity forecast is similar to the
previous one and is near the middle of the intensity consensus
aids.
FORECAST POSITIONS AND MAX WINDS
INIT 20/2100Z 15.7N 124.2W 45 KT 50 MPH
12H 21/0600Z 16.2N 125.3W 45 KT 50 MPH
24H 21/1800Z 17.3N 126.4W 45 KT 50 MPH
36H 22/0600Z 18.5N 126.9W 40 KT 45 MPH
48H 22/1800Z 20.0N 127.1W 30 KT 35 MPH
60H 23/0600Z 21.0N 127.2W 30 KT 35 MPH...POST-TROP/REMNT LOW
72H 23/1800Z 21.8N 127.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
96H 24/1800Z...DISSIPATED
$$
Forecaster Hagen/Roberts
NHC Webmaster
1 year 11 months ago
Issued at 2100 UTC WED SEP 20 2023
000
FOPZ13 KNHC 202036
PWSEP3
TROPICAL STORM KENNETH WIND SPEED PROBABILITIES NUMBER 6
NWS NATIONAL HURRICANE CENTER MIAMI FL EP132023
2100 UTC WED SEP 20 2023
AT 2100Z THE CENTER OF TROPICAL STORM KENNETH WAS LOCATED NEAR
LATITUDE 15.7 NORTH...LONGITUDE 124.2 WEST WITH MAXIMUM SUSTAINED
WINDS NEAR 45 KTS...50 MPH...85 KM/H.
Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH)
PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME
HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME
WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS
CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST
...34 KT (39 MPH... 63 KM/H)...
...50 KT (58 MPH... 93 KM/H)...
...64 KT (74 MPH...119 KM/H)...
FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS
PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE
OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING
AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY)
(CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN
18Z WED AND THE FORECAST HOUR (CUMULATIVE PROBABILITY)
PROBABILITIES ARE GIVEN IN PERCENT
X INDICATES PROBABILITIES LESS THAN 1 PERCENT
PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN
THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT.
PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY
64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT.
- - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - -
FROM FROM FROM FROM FROM FROM FROM
TIME 18Z WED 06Z THU 18Z THU 06Z FRI 18Z FRI 18Z SAT 18Z SUN
PERIODS TO TO TO TO TO TO TO
06Z THU 18Z THU 06Z FRI 18Z FRI 18Z SAT 18Z SUN 18Z MON
FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
LOCATION KT
15N 125W 34 3 1( 4) X( 4) X( 4) X( 4) X( 4) X( 4)
20N 125W 34 X 2( 2) 2( 4) X( 4) 1( 5) X( 5) X( 5)
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FORECASTER HAGEN/ROBERTS
NHC Webmaster