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Tropical Storm Cristobal Public Advisory Number 22A
2020-06-07 07:40:59| National Hurricane Center (Atlantic)
Issued at 100 AM CDT Sun Jun 07 2020 842 WTNT33 KNHC 070540 TCPAT3 BULLETIN Tropical Storm Cristobal Intermediate Advisory Number 22A NWS National Hurricane Center Miami FL AL032020 100 AM CDT Sun Jun 07 2020 ...OUTER RAINBANDS OF CRISTOBAL SPREADING ACROSS PORTIONS OF THE NORTHERN GULF COAST... ...CONDITIONS EXPECTED TO CONTINUE TO DETERIORATE... SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...26.7N 90.1W ABOUT 175 MI...280 KM SSW OF THE MOUTH OF THE MISSISSIPPI RIVER MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Mouth of the Mississippi River to Ocean Springs Mississippi * Lake Borgne A Storm Surge Watch is in effect for... * East of Morgan City Louisiana to the mouth of the Mississippi River A Tropical Storm Warning is in effect for... * Intracoastal City Louisiana to the Okaloosa/Walton County Florida line * Lake Pontchartrain and Lake Maurepas A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within the next 36 hours. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 100 AM CDT (0600 UTC), the center of Tropical Storm Cristobal was located near latitude 26.7 North, longitude 90.1 West. Cristobal is moving toward the north near 12 mph (19 km/h) and this general motion is expected to continue for the next day or so, followed by a gradual turn toward the north-northwest. On the forecast track, the center of Cristobal will approach the northern Gulf of Mexico coast today. Cristobal's center is then forecast to move inland across Louisiana late today through Monday morning, and northward across Arkansas and Missouri Monday afternoon into Tuesday. Maximum sustained winds remain near 50 mph (85 km/h) with higher gusts. Some slow strengthening is forecast until landfall occurs on the northern Gulf coast. Weakening will begin once Cristobal moves inland late today and Monday. Tropical-storm-force winds extend outward up to 240 miles (390 km) from the center. The minimum central pressure based on surface observations and data from the Air Force Hurricane Hunters is 993 mb (29.33 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Cristobal can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at https://www.hurricanes.gov/text/MIATCDAT3.shtml STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...3-5 ft Morgan City LA to Mouth of the Mississippi River...2-4 ft Ocean Springs MS to Marco Island FL including Mobile Bay, Pensacola Bay, and Tampa Bay...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds and will likely extend along the coast well to the east of the center. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected within the Tropical Storm Warning area along the northern Gulf coast beginning this morning RAINFALL: Cristobal is expected to produce total rainfall accumulations of 4 to 8 inches across the eastern and central Gulf coast into the Lower Mississippi Valley, with isolated amounts to 12 inches. Isolated significant river flooding is possible along the central Gulf coast. Rainfall totals of 2 to 4 inches, with local amounts to 6 inches, are expected across portions of the Mid and Upper Mississippi Valley and Northern Plains near and in advance of Cristobal. This rainfall may lead to flash flooding and widespread flooding on smaller streams across the Mid-Mississippi Valley. TORNADOES: A few tornadoes will be possible through this morning from Florida westward across the central Gulf coast region. SURF: Swells generated by Cristobal will affect portions of the northern and eastern Gulf coast during the next couple of 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 complete advisory at 400 AM CDT. $$ Forecaster Beven
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