SPC Jul 9, 2022 1630 UTC Day 1 Convective Outlook

3 years 2 months ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1130 AM CDT Sat Jul 09 2022 Valid 091630Z - 101200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS EVENING INTO TONIGHT FROM CENTRAL MT INTO WESTERN ND... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON/EVENING FROM CENTRAL AL INTO CENTRAL/NORTHERN MS... ...SUMMARY... Scattered severe thunderstorms are expected later this afternoon through tonight across Montana into North Dakota, with damaging winds and large hail likely. Occasional damaging gusts will also be possible this afternoon/evening across parts of Alabama and Mississippi. ...MT/ND late this afternoon through tonight... Similar to the previous two days, midlevel shortwave troughs will move around the northwest periphery of the Four Corners midlevel high, from the interior Northwest across MT to ND through tonight. Despite overnight convection, boundary-layer dewpoints remain in the mid 50s to near the higher terrain in west/southwest MT (somewhat higher dewpoints across eastern MT). Steep midlevel lapse rates will again be replenished from the southwest, which in concert with daytime heating, will result in MLCAPE near 1500 J/kg this afternoon/evening. Deep-layer vertical shear will be fairly strong, with long hodographs and effective bulk shear in excess of 45 kt. Much like yesterday, scattered thunderstorm development is expected near or just after 21z, over and immediately northeast of the mountains in southwest MT. Some of these storms could develop supercell structures with an attendant threat for large hail of 2+ inches in diameter. Later this evening, some upscale growth into one or more clusters is expected, with an increase in the threat for damaging winds of 75+ mph. Embedded supercells will remain possible, especially on the southern flank of the convection, as the cluster(s) move eastward across ND tonight. ...Southeast into TX this afternoon/evening... Downstream from a midlevel high centered near the Four Corners, a broad zone of cyclonic flow aloft persists from the MS Valley to the Mid-Atlantic/Carolinas. Embedded perturbations within this cyclonic flow, enhanced by prior convection, will continue to move east-southeastward over the Southeast, as a surface cold front drifts slowly southward across VA/KY/TN/AR and north TX. Morning clouds/convection across north GA/northeast AL will produce weak outflow and differential heating zones that will drive afternoon thunderstorm development farther south and west from central AL into the Mid-South along the cold front. Hot afternoon temperatures of 95-100 F and boundary-layer dewpoints in the mid 70s will boost MLCAPE to 3000 J/kg or greater, with thunderstorm development expected by early-mid afternoon. Convection will likely grow upscale into a couple of clusters/lines and spread southward through late afternoon/evening. Though flow aloft will be weak, the large buoyancy and DCAPE near 1000 J/kg will support occasional damaging downbursts. Farther east, the morning convection across GA may persist into the afternoon while spreading southeastward, and additional storms are expected to form along the differential heating zone across the Piedmont, and along the cold front moving southward into NC. Vertical shear will remain rather weak (slightly stronger along the front in NC), and thermodynamic profiles from GA into the Carolinas will not be quite as supportive of downbursts compared to MS/AL. Thus, isolated strong/damaging outflow winds will be possible with multicell clusters this afternoon from GA into NC. Strong surface heating (afternoon temperatures well above 100 F) and inverted-v profiles along the slow-moving front across north TX will support the threat for high-based thunderstorms with isolated severe outflow winds for a few hours later this afternoon/evening. ..Thompson/Dean.. 07/09/2022 Read more

Tropical Storm Bonnie Forecast Discussion Number 48

3 years 2 months ago
Issued at 800 AM PDT Sat Jul 09 2022 000 WTPZ44 KNHC 091444 TCDEP4 Tropical Storm Bonnie Discussion Number 48 NWS National Hurricane Center Miami FL EP042022 800 AM PDT Sat Jul 09 2022 The last few deep convective cloud tops below -50C dissipated with Bonnie at around 0600 UTC last night. In the absence of any deeper convection since then, Bonnie's remaining time as a tropical cyclone is fleeting. Subjective and objective Dvorak estimates continue to decrease, and the initial intensity has been reduced to 35 kt in this advisory. The initial motion continues just north of due west at 280/18 kt. As Bonnie continues weakening, it will be increasingly steered westward by the low-level trade wind flow. The latest track forecast is largely an update of the previous one but just a bit faster, remaining close to the center of the track guidance envelope. Bonnie is now over sub-24C sea-surface temperatures and embedded in a very dry, stable atmospheric environment. These factors are expected to prevent additional deep convective activity over the system. If deeper convection does not return soon near the center, Bonnie could become a post-tropical cyclone as early as this afternoon. This expectation is reflected in the latest forecast with Bonnie becoming a remnant low in 12 h, with the closed circulation opening up into a trough in 48 h. FORECAST POSITIONS AND MAX WINDS INIT 09/1500Z 19.5N 127.7W 35 KT 40 MPH 12H 10/0000Z 19.6N 130.6W 30 KT 35 MPH...POST-TROP/REMNT LOW 24H 10/1200Z 19.6N 133.9W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 11/0000Z 19.6N 136.9W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 11/1200Z...DISSIPATED $$ Forecaster Papin
NHC Webmaster

Tropical Storm Bonnie Wind Speed Probabilities Number 48

3 years 2 months ago
Issued at 1500 UTC SAT JUL 09 2022 000 FOPZ14 KNHC 091442 PWSEP4 TROPICAL STORM BONNIE WIND SPEED PROBABILITIES NUMBER 48 NWS NATIONAL HURRICANE CENTER MIAMI FL EP042022 1500 UTC SAT JUL 09 2022 AT 1500Z THE CENTER OF TROPICAL STORM BONNIE WAS LOCATED NEAR LATITUDE 19.5 NORTH...LONGITUDE 127.7 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 12Z SAT 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 12Z SAT 00Z SUN 12Z SUN 00Z MON 12Z MON 12Z TUE 12Z WED PERIODS TO TO TO TO TO TO TO 00Z SUN 12Z SUN 00Z MON 12Z MON 12Z TUE 12Z WED 12Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 20N 130W 34 22 X(22) X(22) X(22) X(22) X(22) X(22) 20N 135W 34 X 2( 2) 9(11) X(11) X(11) X(11) X(11) $$ FORECASTER PAPIN
NHC Webmaster

Tropical Storm Bonnie Public Advisory Number 48

3 years 2 months ago
Issued at 800 AM PDT Sat Jul 09 2022 000 WTPZ34 KNHC 091442 TCPEP4 BULLETIN Tropical Storm Bonnie Advisory Number 48 NWS National Hurricane Center Miami FL EP042022 800 AM PDT Sat Jul 09 2022 ...BONNIE LIKELY TO BECOME POST-TROPICAL LATER TODAY... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...19.5N 127.7W ABOUT 1170 MI...1880 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 21 MPH...33 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM PDT (1500 UTC), the center of Tropical Storm Bonnie was located near latitude 19.5 North, longitude 127.7 West. Bonnie is moving toward the west near 21 mph (33 km/h), and this general motion should continue until Bonnie dissipates early next week. Maximum sustained winds have decreased to near 40 mph (65 km/h) with higher gusts. Additional weakening is expected, and Bonnie should become a post-tropical cyclone later today. The post-tropical low should dissipate by early next week. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 200 PM PDT. $$ Forecaster Papin
NHC Webmaster

Tropical Storm Bonnie Forecast Advisory Number 48

3 years 2 months ago
Issued at 1500 UTC SAT JUL 09 2022 000 WTPZ24 KNHC 091441 TCMEP4 TROPICAL STORM BONNIE FORECAST/ADVISORY NUMBER 48 NWS NATIONAL HURRICANE CENTER MIAMI FL EP042022 1500 UTC SAT JUL 09 2022 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 19.5N 127.7W AT 09/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 18 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 40NE 0SE 0SW 40NW. 12 FT SEAS..105NE 75SE 0SW 30NW. 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 19.5N 127.7W AT 09/1500Z AT 09/1200Z CENTER WAS LOCATED NEAR 19.4N 126.7W FORECAST VALID 10/0000Z 19.6N 130.6W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 10/1200Z 19.6N 133.9W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 11/0000Z 19.6N 136.9W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 11/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.5N 127.7W NEXT ADVISORY AT 09/2100Z $$ FORECASTER PAPIN
NHC Webmaster

SPC Jul 9, 2022 1300 UTC Day 1 Convective Outlook

3 years 2 months ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0751 AM CDT Sat Jul 09 2022 Valid 091300Z - 101200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MONTANA TO NORTH DAKOTA/NORTHWEST MINNESOTA... ...SUMMARY... Scattered severe thunderstorms are expected this afternoon through tonight across Montana into North Dakota, with damaging winds and large hail likely. Marginally severe storms may also occur from parts of Texas into much of the Southeast States, with locally damaging wind gusts a possibility. ...Montana/North Dakota to Minnesota... An early morning MCS across central North Dakota will likely persist east-southeastward with the potential for some stronger wind gusts, but it will likely tend to weaken into midday as elevated inflow diminishes. The remnants of this MCS could subsequently serve as a focus for isolated robust redevelopment across eastern North Dakota and/or northern Minnesota later this afternoon as the boundary layer destabilizes. Otherwise, another semi-active scenario is anticipated across the region later today, including the possibility of a somewhat higher severe potential across Montana/western North Dakota as compared to yesterday. A wind/hail-related Enhanced Risk may be warranted in subsequent Day 1 Outlook updates. Late day/nighttime height falls along with a strengthening of deep-layer westerlies are expected from Idaho/Montana into North Dakota late this afternoon and tonight in advance of a consequential shortwave trough emerging from the Pacific Northwest. Convection will again initially develop over the mountains of northern Idaho and southwest Montana. Forecast soundings suggest convective initiation will occur by 21z-22z as convective temperatures are breached. These storms will evolve beneath a belt of 40-50kt of mid-level flow that will encourage upscale growth of scattered supercells into central Montana. Seasonally strong buoyancy, steep lapse rates, and strong shear suggest one or more MCSs may evolve. This activity should focus along a corridor from central Montana into west-central North Dakota this evening into the overnight. Initial supercells may produce very large hail, but with time, the severe wind threat may increase as bow-type structures are likely to evolve with a maturing MCS. ...Deep South to Carolinas/eastern Virginia... On the eastern periphery of the Great Plains upper ridge, modestly strong west-northwesterly flow aloft will prevail across much of the Deep South and Southeast States. A southward-moving front, aided by weak support aloft, along with pre-existing early day storm clusters/outflows across the Tennessee Valley, should encourage at scattered to numerous thunderstorms especially this afternoon within a high PW environment. Some of these storms are likely to produce localized microbursts capable of wind damage. ...Texas/ArkLaTex... A very hot/humid air mass with afternoon temperatures in excess of 100F in many locations could support some strong/locally severe wind gusts as thunderstorms develop this afternoon near/south of the front across the region. ..Guyer/Leitman.. 07/09/2022 Read more

Eastern North Pacific Tropical Weather Outlook

3 years 2 months ago

667
ABPZ20 KNHC 091150
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Sat Jul 9 2022

For the eastern North Pacific...east of 140 degrees west longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Bonnie, located several hundred miles west-southwest of the
southern tip of the Baja California peninsula.

Offshore of Southwestern Mexico:
Recent satellite imagery indicates that the coverage and
organization of shower and thunderstorm activity has increased
significantly overnight in association with an area of low pressure
located several hundred miles southwest of the southwestern coast of
Mexico. Environmental conditions appear conducive for further
development, and a tropical depression is likely to form over the
central part of the eastern North Pacific basin today or tomorrow
while the system moves generally westward at 15 to 20 mph.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...90 percent.

West of Central America:
An area of low pressure is forecast to form west of the coast of
Central America by early next week. Environmental conditions are
expected to be conducive for some gradual development of this system
next week while it moves generally westward at 10 to 15 mph,
remaining offshore of the southern coast of Mexico.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...low...20 percent.

$$
Forecaster Papin

NHC Webmaster

SPC Day 1 Fire Weather Outlook

3 years 2 months ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1129 AM CDT Fri Jul 08 2022 Valid 081700Z - 091200Z No changes have been made to the outlook, see the previous discussion below for more details. ..Dean.. 07/08/2022 .PREV DISCUSSION... /ISSUED 1240 AM CDT Fri Jul 08 2022/ ...Synopsis... Southwesterly flow aloft over the western CONUS will persist for the next 24 hours ahead of an approaching mid-level wave. This will maintain dry and breezy conditions across much of the Great Basin for today, resulting in areas of elevated fire weather conditions. Unseasonably hot and dry conditions are expected across much of central TX. While winds will generally be benign, very low humidity and curing grasses will yield at least a low-end fire weather concern for the region. ...Great Basin... Fire weather concerns will once again focus across portions of the Great Basin for this afternoon. Early-morning water vapor imagery shows a dry, subsident air mass in place from Baja CA into the eastern Great Basin, which was sampled well by regional 00 UTC soundings. While some mid/upper-level moisture will advect into the region in the form of scattered high clouds today, mostly sunny skies coupled with the antecedent dry air mass will result in another day of widespread 10-20% RH. Latest fuel guidance continues to show high ERCs above the 90th percentile across eastern NV into adjacent areas of UT and ID. While this region will be on the periphery of the stronger southwesterly flow aloft, deep diurnal mixing will maintain 15-20 mph winds with frequent gusts to 25 mph. Consequently, elevated conditions appear likely with sporadic critical conditions possible. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Jul 8, 2022 1630 UTC Day 1 Convective Outlook

3 years 2 months ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1126 AM CDT Fri Jul 08 2022 Valid 081630Z - 091200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON/EVENING ACROSS KY AND VICINITY...AND LATE THIS AFTERNOON INTO TONIGHT ACROSS MT/WESTERN ND... ...SUMMARY... Isolated very large hail and significant outflow gusts are possible late this afternoon into early tonight across Montana, and occasional damaging winds will be possible this afternoon across Kentucky and vicinity. ...OH Valley into the Southeast this afternoon/evening... An expansive midlevel ridge will dominate the Southwest and southern Plains through the period, with mostly weak west-northwesterly flow over the upper MS and OH Valleys. Weak convectively-enhanced perturbations in the west-northwest flow, with associated convective clusters, will continue to move east-southeastward through the afternoon from southern IN into KY. These storm clusters will move along the southern fringe of the 30 kt midlevel flow, and along a baroclinic zone coincident with the northern edge of the warmest boundary layer, where dewpoints will range from the low to mid 70s. Though midlevel lapse rates will not be steep, the warm/moist boundary layer will drive MLCAPE values in the 2000-3000 J/kg range, which will help maintain the ongoing clusters, and support additional storm development to the southwest along the trailing outflow near the confluence of the MS/OH Rivers. The modest midlevel flow and steepening low-level lapse rates during the afternoon will support occasional strong/damaging outflow gusts as the main threat across KY and vicinity. Scattered diurnal thunderstorms are expected in the weak northwest flow regime into the Carolinas/GA this afternoon, with storm development focused along diffuse boundaries/differential heating zones. The weak flow and poor midlevel lapse rates suggest that pulse storm downbursts with outflow winds near or above 50 kt will be sparse. ...MT area later this afternoon into western ND tonight... Clusters of high-based thunderstorms are expected to form from southwest into central/north central MT later this afternoon/evening, in association with surface heating/deep mixing and embedded speed maxima moving around the northwest periphery of the Southwest/southern Plains ridge aloft. Steep midlevel lapse rates will be replenished from the southwest during the day, and surface heating will boost MLCAPE to 2000-3000 J/kg. Long hodographs with effective shear in excess of 40 kt, in combination with the steep lapse rates and strong buoyancy will support clusters with embedded supercells and bowing segments, capable of producing isolated very large hail (2 to 2.5 inches in diameter) and isolated significant outflow gusts up to 75 mph. ...High Plains area this afternoon/evening... Isolated to widely scattered thunderstorms are expected this afternoon/evening east of the high terrain from eastern WY into northeast CO. Forcing for ascent will be weak, but terrain circulations and weak upslope low-level flow should support storm development. Deep-layer, northwesterly vertical shear/hodograph length will be sufficient for supercells and small clusters capable of producing isolated strong-severe outflow gusts and hail late this afternoon through late evening. ..Thompson/Squitieri.. 07/08/2022 Read more

Hurricane Bonnie Forecast Discussion Number 44

3 years 2 months ago
Issued at 800 AM PDT Fri Jul 08 2022 000 WTPZ44 KNHC 081434 TCDEP4 Hurricane Bonnie Discussion Number 44 NWS National Hurricane Center Miami FL EP042022 800 AM PDT Fri Jul 08 2022 Deep convection continues to quickly decrease near Bonnie, with a small area remaining near and north of the surface center. Dvorak satellite intensity estimates are falling, and a blend of 4 0935 UTC microwave SATCON intensity values supports an initial intensity of 65 kt for this advisory. Bonnie's moving over 25 deg C water with cooler oceanic surface temperatures and a drier, stable air mass along the forecast path of the cyclone. Therefore, further weakening is likely with a loss of organized convection, and post-tropical status is predicted in 36 hours, possibly less. As shown in the global models and the NHC intensity forecast, Bonnie should degenerate into a trough in 4 days. The initial motion is due west, or 280/17 kt. Low- to mid-tropospheric easterly flow should steer the cyclone on a continued westward heading with a slight decrease in forward speed early Sunday. The model guidance remains in good agreement with the future track of Bonnie through the period, and no appreciable changes were made from the previous advisory. FORECAST POSITIONS AND MAX WINDS INIT 08/1500Z 18.3N 120.4W 65 KT 75 MPH 12H 09/0000Z 18.8N 123.0W 55 KT 65 MPH 24H 09/1200Z 19.3N 126.7W 45 KT 50 MPH 36H 10/0000Z 19.6N 130.3W 35 KT 40 MPH...POST-TROPICAL 48H 10/1200Z 19.7N 133.7W 30 KT 35 MPH...POST-TROP/REMNT LOW 60H 11/0000Z 19.7N 136.8W 30 KT 35 MPH...POST-TROP/REMNT LOW 72H 11/1200Z 19.7N 139.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 12/1200Z...DISSIPATED $$ Forecaster Roberts
NHC Webmaster

Hurricane Bonnie Wind Speed Probabilities Number 44

3 years 2 months ago
Issued at 1500 UTC FRI JUL 08 2022 000 FOPZ14 KNHC 081433 PWSEP4 HURRICANE BONNIE WIND SPEED PROBABILITIES NUMBER 44 NWS NATIONAL HURRICANE CENTER MIAMI FL EP042022 1500 UTC FRI JUL 08 2022 AT 1500Z THE CENTER OF HURRICANE BONNIE WAS LOCATED NEAR LATITUDE 18.3 NORTH...LONGITUDE 120.4 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 65 KTS...75 MPH...120 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 12Z FRI 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 12Z FRI 00Z SAT 12Z SAT 00Z SUN 12Z SUN 12Z MON 12Z TUE PERIODS TO TO TO TO TO TO TO 00Z SAT 12Z SAT 00Z SUN 12Z SUN 12Z MON 12Z TUE 12Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 20N 125W 34 1 35(36) X(36) X(36) X(36) X(36) X(36) 20N 125W 50 X 6( 6) X( 6) X( 6) X( 6) X( 6) X( 6) 20N 130W 34 X 1( 1) 30(31) 2(33) X(33) X(33) X(33) 20N 130W 50 X X( X) 5( 5) X( 5) X( 5) X( 5) X( 5) 20N 130W 64 X X( X) 1( 1) X( 1) X( 1) X( 1) X( 1) 20N 135W 34 X X( X) 1( 1) 4( 5) 11(16) X(16) X(16) 20N 135W 50 X X( X) X( X) 1( 1) 2( 3) X( 3) X( 3) 20N 140W 34 X X( X) X( X) X( X) 6( 6) X( 6) X( 6) $$ FORECASTER ROBERTS
NHC Webmaster

Hurricane Bonnie Public Advisory Number 44

3 years 2 months ago
Issued at 800 AM PDT Fri Jul 08 2022 000 WTPZ34 KNHC 081433 TCPEP4 BULLETIN Hurricane Bonnie Advisory Number 44 NWS National Hurricane Center Miami FL EP042022 800 AM PDT Fri Jul 08 2022 ...BONNIE LIKELY TO BECOME A POST-TROPICAL CYCLONE ON SATURDAY... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...18.3N 120.4W ABOUT 750 MI...1205 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 20 MPH...31 KM/H MINIMUM CENTRAL PRESSURE...987 MB...29.15 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM PDT (1500 UTC), the center of Hurricane Bonnie was located near latitude 18.3 North, longitude 120.4 West. Bonnie is moving toward the west near 20 mph (31 km/h). A general westward motion is expected during the next few days with a slight reduction in forward speed Sunday through early next week. Maximum sustained winds have decreased to near 75 mph (120 km/h) with higher gusts. Bonnie is expected to weaken below hurricane strength later today and then become a post-tropical cyclone on Saturday. Hurricane-force winds extend outward up to 25 miles (35 km) from the center, and tropical-storm-force winds extend outward up to 70 miles (110 km). The estimated minimum central pressure is 987 mb (29.15 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 200 PM PDT. $$ Forecaster Roberts
NHC Webmaster