During the late afternoon and evening hours of Easter Sunday, a large and strong upper level low clashed into an air mass where high levels of moisture were being pulled northward. This resulted in scattered severe storms which produced penny to half dollar sized hail and damaging winds.
Every event with a place to put it; 15 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS JAN wrote it up.
During the late afternoon and evening hours of Easter Sunday, a large and strong upper level low clashed into an air mass where high levels of moisture were being pulled northward. This resulted in scattered severe storms which produced penny to half dollar sized hail and damaging winds. Most of the hail occurred across NW portions of the forecast area while the damaging winds occurred across the southern third. All of the convective wind damage occurred within the Highway 84 corridor from Natchez to Laurel as a bowing line of storms moved through this area and downed numerous trees. Some of the winds were as high as 70 or 80 mph across portions of Lincoln, Lawrence, Jefferson Davis, and Covington Counties. In addition to the damaging winds and hail, heavy rain and substantial flash flooding occurred. The heaviest rains fell along and south of the Highway 84 corridor from Brookhaven to Laurel where 4 to 6 inches fell with a few select locations likely reaching 7 inches.
Aside from the convective winds, which occurred from the line of thunderstorms, a wake low wind event occurred across the northeast portion of the forecast area (locations E of I-55 and N of I-20). This wake low occurred as higher surface pressures were held on to by the stratiform rain shield. As the back edge of the rain pushed east, surface pressures are allowed to drop rapidly in response to the main surface low which was located over southern Arkansas. The rapid drop in pressure, forced the winds to increase and shift more out of the east. As this occurred, sustained easterly winds increased to 30 to 45 mph with gusts between 50 and 60 mph. These strong winds downed many trees and caused other minor damage across the northeast portion of the area.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jackson, MS wrote its last area forecast discussion before the first event at Apr 12, 11:06 AM CST, 1 hour earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
1206 PM CDT SUN APR 12 2009
.DISCUSSION...THE DEWPOINTS TO WEST WERE STEADILY INCREASING AS THE
WARM FRONT TRACKED NORTH. SEVERE STORMS WERE STARTING TO EXTEND INTO
THE WESTERN ZONES. RUC SHOWS 700-500MB LAPSE RATES AROUND 7 OR 8 WITH
500MB TEMPERATURES AROUND -12 TO -13. MORNING SOUNDINGS SHOW ELEVATED
INSTABILITY...BUT THE LOWER LEVELS AT JACKSON WERE STILL DRY. LOOKING
FOR ELEVATED HAIL PRODUCING STORMS CONTINUE FOR THE WESTERN PORTIONS
OF THE CWA...MAINLY THE LOUISIANA PARISHES AND SOUTHEAST ARKANSAS
COUNTIES INTO THE EARLY AFTERNOON. THE LINE OF STORMS WAS ALREADY
BARING DOWN ON WESTERN LOUISIANA AND WILL LIKELY BE MOVING INTO THE FAR
WESTERN PORTIONS OF THE CWA AROUND 2 PM. MADE SOME SMALL ADJUSTMENTS
TO THE WEATHER GRIDS TO INCREASE THUNDER WORDING IN THE WEST.
THINKING AT THIS TIME THAT LINE OF STORMS WILL BE OVER SE AR/NE LA
FROM 2-4...ALONG THE RIVER 3-6 INTO THE I-55 CORRIDOR FROM 5-8 AND
INTO THE EAST FROM 8-12A AND LIKELY LINGERING OVER THE FAR E/SE
COUNTIES A LITTLE AFTER MIDNIGHT.
LOWERED THE TEMPERATURES IN THE SOUTHEAST WHERE THE STRATUS REFUSES
TO DISSIPATE AND TEMPERATURES WERE STRUGGLING TO GET OUT OF THE LOWER
60S. THE LAKE WIND ADVISORY CONTINUES. NO OTHER CHANGES TO THE
FORECAST.
&&
.AVIATION...SHOWERS AND THUNDERSTORMS WEE STILL EXPECTED TO MOVE
INTO THE WESTERN PORTIONS OF THE AREA BY EARLY AFTERNOON AND TRACK
EAST THROUGH THE EVENING. THUNDERSTORMS WERE ALREADY MOVING INTO THE
GREENVILLE AREA WITH SCATTERED THUNDERSTORMS MOVING THROUGH FOR THE
NEXT HOUR OR TWO. HAIL IS LIKELY FROM NOW THROUGH 2 PM. A LINE OF
THUNDERSTORMS WILL MOVE INTO THE REGION AFTER 2 PM. LOOK FOR
THUNDERSTORMS AT GLH FROM 2-6P...GWO/JAN 4-8P...MEI/GTR 7-11P AND HBG
FROM 8P UNTIL AFTER MIDNIGHT. IN ADDITION TO THUNDERSTORMS A TIGHT
PRESSURE GRADIENT WILL MAINTAIN WINDS FROM 10 TO 20KTS WITH GUSTS TO
30KTS POSSIBLE AT ALL SITES THROUGH MIDNIGHT. AFTER 6Z CONDITIONS SHOULD
IMPROVE ACROSS THE AREA. WITH SKIES CLEARING FROM THE WEST THROUGH
14Z. ANOTHER DISTURBANCE WILL APPROACH THE AREA MONDAY MORNING
BRINGING CLOUDS AND MAYBE A FEW SPRINKLES TO GLH/GWO/GTR. CEILINGS
WILL REMAIN ABOVE 3KFT. OTHERWISE...VFR CONDITIONS SHOULD PREVAIL AT
ALL SITES FROM 15Z THROUGH TUESDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
JACKSON 73 60 79 53 / 78 88 20 13
MERIDIAN 73 59 77 50 / 57 94 31 26
VICKSBURG 73 58 79 50 / 88 77 18 9
HATTIESBURG 74 62 78 58 / 57 82 36 16
NATCHEZ 74 60 79 47 / 82 65 17 7
GREENVILLE 71 56 77 48 / 93 73 20 14
GREENWOOD 70 58 79 48 / 80 83 20 25
&&
.JAN WATCHES/WARNINGS/ADVISORIES...
MS...LAKE WIND ADVISORY UNTIL MIDNIGHT CDT TONIGHT FOR MSZ028>033-
037>039-044>046-050>052-056>058-065-066-073-074.
LAKE WIND ADVISORY UNTIL 9 PM CDT THIS EVENING FOR MSZ018-019-
025>027-034>036-040>043-047>049-053>055-059>064-072.
LA...LAKE WIND ADVISORY UNTIL 9 PM CDT THIS EVENING FOR LAZ007>009-
015-016-023>026.
AR...LAKE WIND ADVISORY UNTIL 9 PM CDT THIS EVENING FOR ARZ074-075.
&&
7HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 608 AM CDT SUN APR 12 2009 ARZ074-075-LAZ007>009-015-016-023>026-MSZ034-035-040>043-047>050- 053>055-059>063-131115- ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND- MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-WASHINGTON- HUMPHREYS-ISSAQUENA-SHARKEY-YAZOO-MADISON MS-WARREN-HINDS-RANKIN- SCOTT-CLAIBORNE-COPIAH-SIMPSON-JEFFERSON-ADAMS-FRANKLIN MS- LINCOLN-LAWRENCE- 608 AM CDT SUN APR 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA...AND WEST CENTRAL MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT A SEVERE WEATHER OUTBREAK WILL BE POSSIBLE FROM LATE THIS AFTERNOON THROUGH EVENING. SCATTERED SEVERE THUNDERSTORMS CONTAINING DAMAGING WINDS...LARGE HAIL...AND POSSIBLY TORNADOES...ARE EXPECTED TO APPROACH THE MISSISSIPPI RIVER AFTER ABOUT 5 PM THIS AFTERNOON. THE STORMS WILL AFFECT THE AREA THIS EVENING...THEN MOVE EAST OF THE AREA BEFORE MIDNIGHT. A POWERFUL LOW PRESSURE SYSTEM MOVING INTO THE LOWER MISSISSIPPI VALLEY REGION AND A STRONG JET STREAM WILL CREATE VERY STRONG WIND SHEAR AND AN UNSTABLE ENVIRONMENT CONDUCIVE FOR SEVERE WEATHER OUTBREAKS. RESIDENTS ARE URGED TO KEEP INFORMED OF THE LATEST INFORMATION CONCERNING THIS POTENTIAL SEVERE WEATHER OUTBREAK. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER CALL TO ACTION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER OPERATIONS...MAY BE NEEDED LATE THIS AFTERNOON AND EVENING. MSZ051-052-056>058-064>066-072>074-131115- NEWTON-LAUDERDALE-SMITH-JASPER-CLARKE-JEFFERSON DAVIS-COVINGTON- JONES-MARION-LAMAR-FORREST- 608 AM CDT SUN APR 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT A SEVERE WEATHER OUTBREAK WILL BE POSSIBLE TONIGHT. SCATTERED SEVERE THUNDERSTORMS CONTAINING DAMAGING WINDS...LARGE HAIL...AND POSSIBLY TORNADOES...ARE EXPECTED TO MOVE IN AROUND 9 PM THIS EVENING AND THEN AFFECT THE AREA THROUGH MUCH OF THE NIGHT. A POWERFUL LOW PRESSURE SYSTEM MOVING INTO THE LOWER MISSISSIPPI VALLEY REGION AND A STRONG JET STREAM WILL CREATE VERY STRONG WIND SHEAR AND AN UNSTABLE ENVIRONMENT CONDUCIVE FOR SEVERE WEATHER OUTBREAKS. RESIDENTS ARE URGED TO KEEP INFORMED OF THE LATEST INFORMATION CONCERNING THIS POTENTIAL SEVERE WEATHER OUTBREAK. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER CALL TO ACTION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER OPERATIONS...MAY BE NEEDED TONIGHT. MSZ018-019-025>033-036>039-044>046-131115- BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY- LOWNDES-CHOCTAW-OKTIBBEHA-HOLMES-ATTALA-WINSTON-NOXUBEE-LEAKE- NESHOBA-KEMPER- 608 AM CDT SUN APR 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND EAST CENTRAL MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE FROM LATE THIS AFTERNOON THROUGH EVENING. THUNDERSTORMS CONTAINING...LARGE HAIL...AND POSSIBLY STRONG WIND GUSTS...ARE EXPECTED TO APPROACH THE MISSISSIPPI RIVER AFTER ABOUT 5 PM THIS AFTERNOON...THEN MOVE THROUGH THE AREA DURING THE EVENING. AT THIS TIME...IT LOOKS LIKE THE GREATEST INSTABILITY WILL BE FARTHER SOUTH AND THIS SHOULD LIMIT THE POTENTIAL FOR DAMAGING WINDS. A POWERFUL LOW PRESSURE SYSTEM MOVING INTO THE LOWER MISSISSIPPI VALLEY REGION AND A STRONG JET STREAM WILL INTERACT WITH A VERY MOIST AIRMASS TO BRING WIDESPREAD THUNDERSTORMS WITH HEAVY RAIN LATER THIS AFTERNOON AND THIS EVENING. RESIDENTS SHOULD KEEP INFORMED OF THE LATEST UPDATES CONCERNING THIS THUNDERSTORM EVENT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER CALL TO ACTION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER OPERATIONS...MAY BE NEEDED LATE THIS AFTERNOON INTO TONIGHT. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK. EC
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1115 AM CDT SUN APR 12 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1110 AM HAIL 4 NE CROSSETT 33.17N 91.92W
04/12/2009 E1.00 INCH ASHLEY AR LAW ENFORCEMENT
&&
CMEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1127 AM CDT SUN APR 12 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1108 AM HAIL 2 NE CROSSETT 33.15N 91.94W
04/12/2009 E1.25 INCH ASHLEY AR LAW ENFORCEMENT
BUSTED WINDSHIELD ON A SO VEHICLE.
&&
CMEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1207 PM CDT SUN APR 12 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1200 PM HAIL LAKE VILLAGE 33.32N 91.28W
04/12/2009 E1.00 INCH CHICOT AR LAW ENFORCEMENT
&&
CMESPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1227 PM CDT SUN APR 12 2009 ARZ074-121810- ASHLEY AR- 1227 PM CDT SUN APR 12 2009 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL WAS LOCATED 3 MILES NORTHWEST OF WEST CROSSETT AT 1227 PM CDT...MOVING NORTHEAST AT 55 MPH. VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE ALSO POSSIBLE WITH THIS STORM. PEOPLE IN ASHLEY COUNTY SHOULD MONITOR THIS STORM CLOSELY. CAW
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1251 PM CDT SUN APR 12 2009 ARZ074-LAZ007-121830- ASHLEY AR-MOREHOUSE LA- 1251 PM CDT SUN APR 12 2009 A CLUSTER OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL WAS LOCATED OVER NORTHERN MOREHOUSE PARISH AND CENTRAL ASHLEY COUNTY AT 1250 PM CDT...MOVING NORTHEAST AT 55 MPH. VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE ALSO POSSIBLE WITH THIS STORM. PEOPLE IN ASHLEY COUNTY...AND NORTHERN MOREHOUSE PARISH SHOULD MONITOR THIS STORM CLOSELY. CAW
The Jackson/Brandon,MS radar (KDGX), 159 km away, was scanning. The volume nearest the first event began at 18:06 UTC.
16 thunderstorm wind, 12 high wind, 11 hail, 10 flash flood, 3 strong wind, 1 lightning. Local standard time, as filed.
A swath of quarter sized hail fell across a portion of central Sunflower County.
A roof sustained damaged and some trees and power lines were blown down across Cleveland. Winds occurred from a gravity wave feature as a large moderate rain shield was moving through the area.
A home was struck and damaged occurred to many electrical appliances.
A few trees were blown down across eastern Adams County.
A couple trees were blown down.
A couple of trees were blown down off Highway 98.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 40 and 50 mph downed a few trees across Madison County. A couple of these trees were down across roads.
Several trees were blown down along with a few power poles broken off. This damage occurred along Highway 51 just south of Brookhaven.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed dozens of trees across Attala County. A few trees were down across area roads.
Numerous trees and some power lines were blown down across the central portion of the county as wind gusts between 70 and 80 mph blew through.
Numerous trees fell south of Rockport, which blocked some roads.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed several trees across portions of Leake County. A couple of these trees were down across roads.
Several trees were blown down near the Oma Community.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed several trees across Choctaw County. A few trees were down across area roads.
Scattered trees were blown down just northwest of Prentiss to near Highway 13.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 40 and 50 mph downed a few trees along with a highway sign.
Extensive flash flooding was observed across most of Lincoln County, especially in the southern part of the county. Numerous roads were flooded, included were a few that do not typically get flooded. One person had to be rescued on Summit Road near the Pike County line. Rainfall totals ranged from 4 to 6 inches.
Numerous streets and roads were flooded around Monticello, including the downtown area. Oak Grove Church Road just outside of Monticello had portions of it washed out. The Sheriff's office discovered that a car had driven into a washed out road. Also numerous roads across the county had flooded.
Trees were knocked down on Highway 37 near the Smith-Covington county line.
Several trees were blown down and snapped around Taylorsville.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed dozens of trees across Winston County. A few trees were down across area roads.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed dozens of trees across Neshoba County. Some trees were down across area roads.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed dozens of trees across Oktibbeha County. Some trees were down across area roads.
Several reports of an estimated 70 mph winds were observed between Collins and Seminary.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed dozens of trees across Newton County. A few trees were down across area roads.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed several trees across Clay County.
Numerous roads were flooded across rural parts of the county and in Prentiss. Vehicles were flooded on Highway 13 and one vehicle went off into a flooded creek. Prentiss fire department measured 4.20 inches of rain with 1.32 inches in one hour. Rainfall totals ranged from 4 to 6.5 inches across the county.
A few trees were blown down just west of Heidelberg along County Road 31.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed dozens of trees across Lowndes County. Some trees were down across area roads and power lines. One tree was on a house near Caledonia.
Widespread flash flooding occurred across Covington County as 4 to 6.5 inches of rain fell. Water covered Mcdonald Road just south of Collins. Water washed out culverts on Deerman Road just south of Collins. Numerous other roads were flooded across the county. A portion of Highway 49 was covered with high water for a short period of time. Sanford recorded 4.8 inches of rain. A half inch fell in ten minutes.
Widespread flash flooding occurred as 4 to 6.5 inches of rain fell across the county. Many roads were flooded across the county with several washed out. A portion of Highway 29 was undermined and was closed for a period of time. Additionally, numerous streets were flooded in and around Laurel.
A number of trees were blown down across the southern part of the county.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed several trees across Noxubee County.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed several trees across Kemper County.
Strong easterly winds developed as the back edge of the rain shield pushed east in response to a wake low and rapidly falling pressures. Wind gusts between 50 and 60 mph downed several trees across Lauderdale County. A measured wind gust of 56 mph was recorded at Key Field in Meridian.
Widespread heavy rain, between 4 and 6 inches, flooded several roads throughout the county.
Shears Road flooded in the northeast portion of the county along with several other roads. Rainfall amounts between 4 and 7 inches occurred across portions of the county with 6.7 inches measured in Sumrall.
About 13 downed trees were observed from Interstate 59 to the Perry County line. The area was mainly in a line from the Glendale community to the Macedonia and Sunrise communities. An outbuilding had the tin roof torn off. Some trees and power lines were also blown down just north of Petal along Highway 42.
Numerous roads were flooded in Hattiesburg, which almost flooded some homes. Numerous roads were flooded in the northern portion of the county around Highway 42. Several roads were washed out as well across the northern sections. Rainfall totals ranged from 4 to 6 inches.
Several roads were flooded across the central and southern portion of the county as 4 to 6 inches of rain fell.
Many roads were flooded along with several washed out across the central portions of Forrest County. Heavy rainfall between 4 and 6 inches fell in a short time and caused all the flooding problems.
A swath of penny to quarter sized hail fell across the southern portion of the county. This was a left moving supercell which continued into Lamar County.
A swath of penny to quarter sized hail fell across portions of western Lamar County. This occurred from the same left moving supercell storm which came out of southern Marion County.
Quarter inch sized hail was discovered near Rawls Springs.
Nickel sized hail was spotted near New Hebron.
Quarter sized hail was observed just southeast of Martinville.
A swath of penny to quarter sized hail fell across western Smith County.
A couple trees were blown down along Highway 18 and Martin Lane just west of Raleigh.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2009Every state in 2009This day in weather historyWarnings in Mississippi, April 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 164939, 164943, 164946, 164948, 164949, 164950, 164951, 164952, 164954, 165983, 165984, 164953, 166382, 165981, 167519, 165980, 166010, 165986, 165993, 167520, 165982, 165988, 165989, 165997, 165987, 165991, 166005, 166007, 166006, 166034, 165990, 166109, 166162, 166037, 165996, 165998, 166003, 166129, 166145, 166157, and more.