Hurricane Emily has weakened to a tropical depression as it moves inland in northern Mexico, but forecasters warn heavy rains remain a threat.
Emily destroyed one of Monterrey's bridges
The storm brought down trees and power lines in the state of Tamaulipas, with winds of 200km/h (125 mph) - but there are no reports of deaths.
Thousands of people saw out the storm in emergency shelters.
The US National Hurricane Center (NHC) say rain in Mexico's mountains could cause deadly mudslides and floods.
At 1000 local time (1500 GMT) on Thursday Emily's sustained winds dropped to 45km/h (30mph), and the NHC said the storm should gradually dissipate later in the day.
Forecasters warned up to 38cm (15in) of rain could fall in the affected areas as the storm travelled west at 2mph (4km/h) on Thursday.
Emily ran ashore at 0800 (1300 GMT) on Wednesday, about 50km (30 miles) south of San Fernando in the state of Tamaulipas and 120km (75 miles) south of the town of Brownsville in Texas.
Thousands of people on both sides of the border lost electricity as the storm brought down power lines, peeled off roofs and left a trail of debris and flooded fields.
In Monterrey, Mexico's third largest city, residents fled to emergency shelters as torrential rains washed out roads and caused flash floods.
Flooding led to a partial collapse of one of the city bridges.
The bridge ruptured a gas pipeline that burst into flames - no injuries were reported.
Thousands of residents in the US-Mexico border area had earlier boarded up their homes or taken refuge in shelters.
A US coast guard helicopter was sent to rescue four fishermen stranded in heavy seas off the Texas coast, the AFP news agency reports.
The storm had moved through the Gulf of Mexico after hitting the Yucatan peninsula to the south.
It killed at least five people in its earlier path across Grenada and Jamaica.
Work is resuming on some oil rigs in the Gulf of Mexico, which had been evacuated.
Emily comes less than a week after Hurricane Dennis caused more than two dozen deaths as it rampaged through Haiti, Jamaica, Cuba and Florida.
Have you been affected by Hurricane Emily? Send us your experiences using the form below. If you have any pictures of the hurricane's impact you can send them to firstname.lastname@example.org.
The following comments reflect the balance of opinion we have received so far:
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We had been vacationing in the Riviera Maya before it was evacuated. I just read a news report that the roof of the hotel lobby had blown off and windows had been shattered. We are so sad about the destruction of this beautiful place that we had just enjoyed so much. We are praying for the people of Mexico.
Nicole, Russell, KY
My girlfriend and I are leaving for Cancun this Saturday for a week. I called the hotel where we are staying and spoke to the manager. He said everything was getting back to normal, most power had been restored and by this weekend it seems it will be business as usual.
Mark Temple, Houston, TX
I was in the resort strip of Playa del Carmen as of Saturday night, but luckily was able to leave before the airport shutdown. Before I left, the entire resort area and town was preparing, boarding up windows, evacuating the area. There were the beginnings of a storm taking place and waves were extremely choppy compared to the normal there.
Ben Kelso, Toronto, Canada
I returned from Mexico on Saturday morning. Nineteen of my friends are still out there. Having spoken to them, most of them have been put up into gymnasiums or colleges. As far as I am aware, everyone is okay but are frightened by the experience.
My girlfriend is staying at a Spanish school near Cancun. She sat the storm out in the school house with about 8 other students. She said it was very loud and scary, but they were all fine, except for the loss of all but one TV channel.
Paul C Dunn, London
We have been taking it pretty calmly. Even though others have been preparing by taping up windows, buying water, etc, my family has been going on with life quite normally. I even went swimming today. There are rumours that the local schools may be opened up as public shelters, should the need arise.
Rene Hinojosa, Alice, Texas
We live in Grand Cayman. Having shuttered everything up for Dennis last week, it didn't take too long to do the same again for Emily this weekend. The shops were still chaotic though, perhaps because we thought we were more at risk from Emily. By Saturday night a curfew had been declared and everyone was inside waiting. The shelters had about 700 people in them. The 11 pm advisory on Saturday had us all worried as it said Emily would come closer. Luckily by 2 am Sunday Emily had changed course again. She passed within 98 miles of us - we had winds of about 45 mph and lots of rain but nothing major. Just as well - after Ivan the island would not survive another bad hurricane.
Elaine, George Town, Grand Cayman
My Godmother and her boyfriend are staying in the Marriott Hotel in Cancun. We phoned them yesterday before the storm, they were to be taken downstairs into the ballroom with all the other guests at about midnight their time, to wait out the storm. I hope she is OK. We are awaiting their text message.
Rebecca Greaves, Tockwith, York, England
This year has been real hectic here in the Caribbean. Last year was incredible with four big hurricanes going through; this year we have narrowly avoided these latest five. We were hit hard by Hurricane Lenny in 2001, since then we are simply praying and keeping alert. These hurricanes are getting worse, and if global warming is true, then we are going to get more of these. We here in St Kitt's are as prepared as we are going to be. It seems that no amount of preparation, prepares for the emotional and mental shock of actually experiencing one of Nature's wonders and terrors.
Jason Graves, St Kitt's, West Indies (originally from the UK)
Stephen, my nephew, and his girlfriend Ellie are on holiday in Mexico and have been evacuated inland. They have only the clothes they were wearing and we have not heard anything from them for some time as they need to preserve the phone battery.
Stephen Saberton, Pymoor, Ely, Cambs, England
I live in Edinburg, about 60 miles west of Brownsville TX. We are getting worried that the path of Emily may come within 50 miles of Brownsville and we are braced for the threat of flooding rain, heavy winds and tornados. We have already bought bottled water, canned food and other supplies. The locals are pretty laid back about it, some were out mowing their lawns this morning and nobody on my street has boarded up their windows or taken any other visible precautions.
Brian Edwards, Edinburg, Texas, USA