SPC Severe Thunderstorm Watch 480 Status Reports

2 months 1 week ago
WW 0480 Status Updates
STATUS REPORT ON WW 480 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NW RSL TO 60 WNW CNK TO 35 NNW CNK. ..BROYLES..06/30/25 ATTN...WFO...GLD...GID...LBF... STATUS REPORT FOR WS 480 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC089-123-141-301040- KS . KANSAS COUNTIES INCLUDED ARE JEWELL MITCHELL OSBORNE THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC Severe Thunderstorm Watch 480

2 months 1 week ago
WW 480 SEVERE TSTM KS NE 300450Z - 301100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 480 NWS Storm Prediction Center Norman OK 1150 PM CDT Sun Jun 29 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Kansas Western and Central Nebraska * Effective this Sunday night and Monday morning from 1150 PM until 600 AM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated very large hail events to 2 inches in diameter possible SUMMARY...Various forecast guidance suggests that storms should intensify, expand, and linearly organize into the overnight as they progress southeastward, potentially into an MCS with wind damage/some hail possible. The severe thunderstorm watch area is approximately along and 85 statute miles north and south of a line from 30 miles north northwest of Mccook NE to 30 miles southeast of Hastings NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 30025. ...Guyer Read more

SPC MD 1520

2 months 1 week ago
MD 1520 CONCERNING SEVERE THUNDERSTORM WATCH 480... FOR SOUTHERN NEBRASKA...NORTHERN KANSAS
Mesoscale Discussion 1520 NWS Storm Prediction Center Norman OK 0158 AM CDT Mon Jun 30 2025 Areas affected...Southern Nebraska...Northern Kansas Concerning...Severe Thunderstorm Watch 480... Valid 300658Z - 300900Z The severe weather threat for Severe Thunderstorm Watch 480 continues. SUMMARY...Isolated severe gusts and hail will be possible over the next few hours across southern Nebraska and northern Kansas. DISCUSSION...Scattered strong to severe thunderstorms are currently ongoing near a pocket of moderate instability from south-central Nebraska into northwest Kansas, where the RAP currently has MLCAPE in the 2000 to 3000 J/kg range. Steep mid-level lapse rates are contributing to the instability. RAP forecast soundings at 07Z near Hastings, Nebraska have 700-500 mb lapse rates near 7.5 C/km with 0-6 km shear around 30 knots. This should support a severe threat over the next few hours. Isolated supercells and short intense line segments will likely be capable of producing severe wind gusts and hail. The threat may become more isolated as instability decreases across the region late tonight. ..Broyles.. 06/30/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TOP...ICT...GID...LBF...DDC...GLD... LAT...LON 40679989 40030079 39540120 39320124 39100106 38970046 38969930 39249809 39629770 40329749 40869745 41249788 41359821 41339874 41299895 41079936 40679989 MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Jun 30, 2025 Day 4-8 Severe Weather Outlook

2 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Mon Jun 30 2025 Valid 031200Z - 081200Z ...DISCUSSION... A mid-level ridge will start the extended period across the Plains on D4/Thursday. This ridge will shift east through the extended period. A surface low will develop in the lee of the Rockies and move slowly north and east, reaching eastern Ontario by D7/Sunday. This surface low and its associated cold front will likely be the only potential for any severe weather during the extended period. However, at this time it appears the stronger shear will be well displaced from the greater instability. Therefore, severe weather probabilities are not necessary at this time. Outside of this frontal zone during the Day 4 to Day 7 period, thunderstorms are likely. However, weak lapse rates and very weak shear is anticipated, with minimal storm organization. Read more

SPC Severe Thunderstorm Watch 480 Status Reports

2 months 1 week ago
WW 0480 Status Updates
STATUS REPORT ON WW 480 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 E GLD TO 30 NNE HLC TO 15 NNW EAR TO 20 E BUB. ..BROYLES..06/30/25 ATTN...WFO...GLD...GID...LBF... STATUS REPORT FOR WS 480 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC065-089-123-141-147-163-183-300940- KS . KANSAS COUNTIES INCLUDED ARE GRAHAM JEWELL MITCHELL OSBORNE PHILLIPS ROOKS SMITH NEC001-019-035-059-061-079-081-093-099-121-129-169-181-300940- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO CLAY FILLMORE FRANKLIN HALL HAMILTON HOWARD KEARNEY MERRICK NUCKOLLS THAYER WEBSTER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES Read more

Tropical Storm Flossie Forecast Discussion Number 5

2 months 1 week ago
Issued at 300 AM CST Mon Jun 30 2025 000 WTPZ41 KNHC 300837 TCDEP1 Tropical Storm Flossie Discussion Number 5 NWS National Hurricane Center Miami FL EP062025 300 AM CST Mon Jun 30 2025 A 30/0357 UTC ASCAT-B pass over Flossie showed a sizable area of 30-35 kt winds in the NE quadrant, with 25-30 kt winds wrapping into portions of the SE and NW quadrants. The ASCAT data also indicates that the RMW has contracted to about 40 n mi. SSMIS and GMI microwave passes between 00-03Z were also helpful in diagnosing the position and structure of Flossie. Since the time of the above-mentioned microwave images, GOES satellite imagery indicates that Flossie has started to become better organized, and it appears that the low-level center is likely underneath the northern portion of the central convective area, which has increased in size and contains a large area of cloud tops colder than -80 degrees C. The initial intensity is set to 40 kt due to the improved organization since the time of the ASCAT pass. This estimate is also in line with the latest objective intensity estimates from the UW-CIMSS ADT, AiDT and DPRINT, which are running in the 40-45 kt range. Atmospheric and oceanic conditions are expected to remain favorable for intensification for at least another 48 h as Flossie moves through an environment of warm water, weak vertical wind shear, and a moist mid-level troposphere. Rapid intensification remains a distinct possibility over the next day or two. The NHC forecast continues to show steady to rapid intensification. The official forecast is near the higher end of the intensity guidance envelope. Beyond 48 h, Flossie should gradually encounter a dry and stable airmass and cross over cooling waters which will lead to steady weakening. The initial motion estimate is toward the northwest, or 315/9 kt. A motion between west-northwest and northwest should continue for the next few days as Flossie moves through a break in the subtropical ridge. The NHC track forecast is mostly unchanged from the previous official forecast, and lies in between the simple and corrected consensus aids. The latest NHC forecast has necessitated the issuance of a Tropical Storm Warning for portions of the coast of Mexico, as tropical-storm-force wind speed probabilities are in the 40 to 50 percent range for portions of the area. Residents of Mexico should stay updated on the latest forecast. A shift in track to the right of the official forecast could bring more significant impacts to the coast of southwestern Mexico. KEY MESSAGES: 1. The outer bands of Tropical Storm Flossie may bring locally heavy rainfall to the Mexican states of Oaxaca, Guerrero, Michoacán, Colima, and Jalisco through mid-week. Life-threatening flooding and mudslides are possible, particularly in areas of steep terrain. 2. A tropical storm warning has been issued for a portion of southwestern Mexico, where tropical storm conditions are expected late today through Tuesday. FORECAST POSITIONS AND MAX WINDS INIT 30/0900Z 15.0N 101.8W 40 KT 45 MPH 12H 30/1800Z 15.7N 102.9W 50 KT 60 MPH 24H 01/0600Z 16.8N 104.6W 65 KT 75 MPH 36H 01/1800Z 17.7N 106.3W 80 KT 90 MPH 48H 02/0600Z 18.5N 107.7W 85 KT 100 MPH 60H 02/1800Z 19.4N 108.8W 80 KT 90 MPH 72H 03/0600Z 20.4N 109.8W 65 KT 75 MPH 96H 04/0600Z 22.7N 111.9W 45 KT 50 MPH...POST-TROPICAL 120H 05/0600Z 24.9N 114.1W 25 KT 30 MPH...POST-TROP/REMNT LOW $$ Forecaster Hagen
NHC Webmaster

Tropical Storm Flossie Wind Speed Probabilities Number 5

2 months 1 week ago
Issued at 0900 UTC MON JUN 30 2025 171 FOPZ11 KNHC 300837 PWSEP1 TROPICAL STORM FLOSSIE WIND SPEED PROBABILITIES NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL EP062025 0900 UTC MON JUN 30 2025 AT 0900Z THE CENTER OF TROPICAL STORM FLOSSIE WAS LOCATED NEAR LATITUDE 15.0 NORTH...LONGITUDE 101.8 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 40 KTS...45 MPH...75 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 06Z MON 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 06Z MON 18Z MON 06Z TUE 18Z TUE 06Z WED 06Z THU 06Z FRI PERIODS TO TO TO TO TO TO TO 18Z MON 06Z TUE 18Z TUE 06Z WED 06Z THU 06Z FRI 06Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT CABO SAN LUCAS 34 X X( X) X( X) 3( 3) 17(20) 10(30) X(30) CABO SAN LUCAS 50 X X( X) X( X) X( X) 2( 2) 3( 5) X( 5) CABO SAN LUCAS 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) SAN JOSE CABO 34 X X( X) X( X) 2( 2) 14(16) 8(24) 1(25) SAN JOSE CABO 50 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) LA PAZ 34 X X( X) X( X) X( X) 6( 6) 7(13) 1(14) LORETO 34 X X( X) X( X) X( X) 1( 1) 2( 3) 1( 4) ISLAS MARIAS 34 X 1( 1) 6( 7) 8(15) 9(24) X(24) X(24) MAZATLAN 34 X X( X) 1( 1) 3( 4) 5( 9) 1(10) X(10) SAN BLAS 34 X 2( 2) 4( 6) 5(11) 4(15) X(15) X(15) P VALLARTA 34 X 1( 1) 3( 4) 2( 6) 2( 8) X( 8) X( 8) 15N 105W 34 2 19(21) 5(26) 2(28) 1(29) X(29) X(29) BARRA NAVIDAD 34 X 2( 2) 10(12) 3(15) 1(16) X(16) X(16) MANZANILLO 34 X 14(14) 20(34) 3(37) 2(39) X(39) X(39) MANZANILLO 50 X 1( 1) 2( 3) 1( 4) X( 4) X( 4) X( 4) L CARDENAS 34 4 12(16) 3(19) 2(21) X(21) X(21) X(21) ZIHUATANEJO 34 4 6(10) 3(13) X(13) X(13) X(13) X(13) 15N 100W 34 2 2( 4) 1( 5) X( 5) X( 5) X( 5) X( 5) ACAPULCO 34 1 3( 4) X( 4) X( 4) X( 4) X( 4) X( 4) 15N 110W 34 X X( X) 3( 3) 2( 5) 3( 8) X( 8) X( 8) 20N 110W 34 X X( X) 4( 4) 15(19) 48(67) 3(70) X(70) 20N 110W 50 X X( X) X( X) 2( 2) 29(31) 2(33) X(33) 20N 110W 64 X X( X) X( X) X( X) 13(13) 1(14) X(14) ISLA SOCORRO 34 X X( X) 3( 3) 7(10) 22(32) 1(33) X(33) ISLA SOCORRO 50 X X( X) X( X) X( X) 5( 5) X( 5) X( 5) ISLA CLARION 34 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) 20N 115W 34 X X( X) X( X) X( X) 1( 1) 2( 3) 1( 4) 25N 115W 34 X X( X) X( X) X( X) X( X) 2( 2) 2( 4) $$ FORECASTER HAGEN
NHC Webmaster

Tropical Storm Flossie Public Advisory Number 5

2 months 1 week ago
Issued at 300 AM CST Mon Jun 30 2025 000 WTPZ31 KNHC 300837 TCPEP1 BULLETIN Tropical Storm Flossie Advisory Number 5 NWS National Hurricane Center Miami FL EP062025 300 AM CST Mon Jun 30 2025 ...TROPICAL STORM WARNINGS ISSUED FOR PORTIONS OF THE SOUTHWESTERN MEXICO COAST... ...FLOSSIE EXPECTED TO BRING AREAS OF HEAVY RAIN ALONG THE COAST OF SOUTHWESTERN MEXICO... SUMMARY OF 300 AM CST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...15.0N 101.8W ABOUT 185 MI...300 KM S OF ZIHUATANEJO MEXICO ABOUT 320 MI...520 KM SSE OF MANZANILLO MEXICO MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Mexico has issued a Tropical Storm Warning along the coast of southwestern Mexico from Punta San Telmo to Playa Perula. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Southwest coast of Mexico from Punta San Telmo to Playa Perula A Tropical Storm Watch is in effect for... * Zihuatanejo to east of Punta San Telmo * North of Playa Perula to Cabo Corrientes A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in southwestern Mexico should monitor the progress of Tropical Storm Flossie. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 300 AM CST (0900 UTC), the center of Tropical Storm Flossie was located near latitude 15.0 North, longitude 101.8 West. Flossie is moving toward the northwest near 10 mph (17 km/h). A west-northwest to northwest motion should continue over the next few days. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Steady-to-rapid strengthening is forecast during the next couple of days, and the system is expected to become a hurricane tonight or Tuesday. Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Flossie can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDEP1 and WMO header WTPZ41 KNHC. RAINFALL: Tropical Storm Flossie is expected to produce rainfall totals of 3 to 6 inches, with isolated maximum totals of 10 inches, across portions of the Mexican states of Oaxaca, Guerrero, Michoacán, Colima, and Jalisco through Wednesday. This rainfall may lead to areas of life-threatening flooding and mudslides, especially in areas of steep terrain. For a complete depiction of forecast rainfall associated with Tropical Storm Flossie, please see the National Weather Service Storm Total Rainfall Graphic available at hurricanes.gov/graphics_ep1.shtml?rainqpf WIND: Tropical storm conditions are expected within the warning area, and are possible within the watch areas, late today through Tuesday. SURF: Swells generated by Flossie will affect portions of the coast of southwestern Mexico during the next few days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 600 AM CST. Next complete advisory at 900 AM CST. $$ Forecaster Hagen
NHC Webmaster

Summary for Tropical Storm Flossie (EP1/EP062025)

2 months 1 week ago
...TROPICAL STORM WARNINGS ISSUED FOR PORTIONS OF THE SOUTHWESTERN MEXICO COAST... ...FLOSSIE EXPECTED TO BRING AREAS OF HEAVY RAIN ALONG THE COAST OF SOUTHWESTERN MEXICO... As of 3:00 AM CST Mon Jun 30 the center of Flossie was located near 15.0, -101.8 with movement NW at 10 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 45 mph.
NHC Webmaster