Tropical Storm Hermine (2010)

Basin

Eastern Pacific

Dates

September 3, 2010 to September 10, 2010

Peak strength

Tropical Storm, 60 kt (69 mph)

Lowest pressure

989 mb (29.21 inHg)

Landfall

Yes

Accumulated cyclone energy

1.6

Tropical-storm-force wind reached

90 nmi (167 km, 104 mi) from the center at its widest

Eyewall radius at its peak

12 nmi (22 km, 14 mi)

Overall size

180 nmi (333 km, 207 mi) to the outermost closed isobar

Peak gust in the best track

65 kt (75 mph)

Fastest the center moved

18 kt (21 mph)

Identifier

EP112010

Radar at KBRO as it neared land, Sep 7, 02:00 UTC

The sources count different things and are not added together.

Landfall points the US agencies flagged in the best track. The nearest town is named from the site’s gazetteer, not from the report.

NOAA’s Storm Events database, the record National Weather Service offices compile months after a storm, as compiled March 2026.

Deaths

6 (6 direct, 0 indirect)

Injuries

2

Property damage

$45 million

Crop damage

$2.0 million

Events recorded

133 in 11 reports from 4 states and marine areas

State by state

What was recorded

86 flash flood, 14 tornado, 12 tropical storm, 7 flood, 5 thunderstorm wind, 3 storm surge/tide, 2 hail, 2 funnel cloud, 2 heavy rain.

14 tornadoes recorded in the United States, strongest first.

The Weather Prediction Center attributes 2,952 rain gauge totals over the contiguous United States to this storm. The wettest reached 16.37 inches (416 mm).

WPC’s storm rainfall file, 1900 to 2020, compiled by David Roth.

The strongest winds National Weather Service offices recorded with this storm. An estimated figure is a forecaster’s judgment from the damage, not an instrument reading.

From the Storm Events narratives, unedited.

The core of still-intense Hermine moved along and just west of Federal Highway 77 through the west section of the King Ranch in Kenedy County, likely bringing continued sustained tropical storm force winds between 40 and 50 mph with gusts to 60 mph or higher over the very rural county during the pre dawn hours of September 7th. Farther east, feeder bands continued to produce sustained tropical storm force winds between 40 and 50 mph with gusts near 60 mph, as evidenced by reports at Rincon del San Jose (midway up the Laguna Madre in the county; 48 mph gust 58 mph at 100 CST) and at Baffin Bay Texas Coastal Ocean Observing Network (44 mph gust 56 mph at 324 CST). Observations just prior to sunrise at Kingsville (about 25 miles north of the Kenedy/Kleberg line) indicated peak winds to 63 mph at 523 CST). Damage has not been estimated in Kenedy County as of this writing.

Kenedy, Texas · Tropical Storm · Sep 7, 05:30 UTC

Torrential and quick hitting rainfall associated with persistent feeder bands around the middle core of Tropical Storm Hermine left widespread farm/field flooding across extreme northeast Cameron County from late night into the pre dawn hours of September 7th. Bias corrected radar estimates, combined with an observed report of 7.73 inches 9.4 miles northeast of Rio Hondo, indicated 6 to 8 inches fell in the area on both sides of the northeast Cameron/southeast Willacy County line. With most of the fields plowed over, damage from the flooding may have been minimal. However, high standing water was discovered at the edge of FM 507 just in Willacy County line 12 to 15 hours after the worst of the rains had fallen, indicating a brief period of true flash flooding was likely covering some of the Farm to Market Roads, and a number of unimproved County Roads.

Willacy, Texas · Flash Flood · Sep 7, 05:30 UTC

An EF0 tornado briefly touched down east of Hope, Arkansas along US 278. The tornado was associated with the remnants of tropical storm Hermine which was located over central Texas. A large tree was snapped off halfway up near the intersection of US 278 and County Road 1060 along with several large branches. Maximum winds are estimated at 60-65 mph.

Hempstead, Arkansas · Tornado · Sep 7, 22:09 UTC

The Pittsburg County Sheriff's Office reported Highway 113 between Canadian and Indianola flooded, as well as Highway 69 in the Canadian area. Numerous other roads in the northern portion of the county were closed due to flooding. Some of those roads, along with tin horns and even a bridge, were washed out.

Pittsburg, Oklahoma · Flash Flood · Sep 9, 09:59 UTC

The Sequoyah County Sheriff's Office reported numerous road closures in and around Vian. High water also flooded numerous streets in and around Sallisaw. Several homes and businesses were flooded in town and several county roads were washed out. The Sallisaw Middle School was damaged by flooding. Vehicles were stranded in high water, necessitating water rescues.

Sequoyah, Oklahoma · Flash Flood · Sep 9, 10:07 UTC

Crawford County Emergency Management reported many roads flooded in and around Van Buren, which resulted in numerous swift water rescues. The basement of the courthouse, portions of the police department, and the senior citizen's center were flooded. People were evacuated from several homes threatened by flood waters. At least one bridge was damaged by flooding. The Cedarville Elementary School and library were damaged by flood waters.

Crawford, Arkansas · Flash Flood · Sep 9, 13:45 UTC

The Pickens County 911 Center reported that three trees and one power line were down in the far southern portion of the county between Talmadge and Tate near the Cherokee county line.

Pickens, Georgia · Thunderstorm Wind · Sep 11, 23:15 UTC

The Cherokee County Emergency Management Director reported that eight to nine trees were down between Waleska and Ball Ground in the far northern portion of the county near the Pickens county line.

Cherokee, Georgia · Thunderstorm Wind · Sep 11, 23:20 UTC

• Tropical Storm AgathaEastern Pacific · 2010Tropical Storm40 kt · 1001 mb
• Tropical Storm BlasEastern Pacific · 2010Tropical Storm55 kt · 994 mb
• Unnamed tropical depressionEastern Pacific · 2010Tropical Depression30 kt · 1007 mb
• Hurricane CeliaEastern Pacific · 2010Cat 5140 kt · 921 mb
• Hurricane DarbyEastern Pacific · 2010Cat 3105 kt · 959 mb
• Unnamed tropical depressionEastern Pacific · 2010Tropical Depression30 kt · 1006 mb
• Tropical Storm EstelleEastern Pacific · 2010Tropical Storm55 kt · 994 mb
• Unnamed tropical depressionEastern Pacific · 2010Tropical Depression30 kt · 1003 mb
• Hurricane FrankEastern Pacific · 2010Cat 180 kt · 978 mb
• Unnamed tropical depressionEastern Pacific · 2010Tropical Depression30 kt · 1003 mb
• Tropical Storm GeorgetteEastern Pacific · 2010Tropical Storm35 kt · 999 mb

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.

• Tropical cyclone report, National Hurricane Center
• Every advisory and discussion NHC issued while it was live
• Best track as KMZ, National Hurricane Center
• Wikipedia article: Tropical Storm Hermine