Dust Storm and High Wind in California, June 4 to 5, 2012

Name: Dust Storm and High Wind in California, June 4 to 5, 2012
Start: 2012-06-04T14:00
End: 2012-06-05T18:00
Location: California

June 4 to 5, 2012 · NWS HNX · 6 events in 6 counties and zones

The toll

Deaths: 0
Injuries: 0
Property damage: $105,000
Crop damage: None recorded
Events: 6

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.

What happened

The episode as NWS HNX wrote it up.

The upper-level ridge that brought Fresno a high of 99 on May 31st continued to strengthen on June 1st. As a result, temperatures finally broke the century mark over much of the central and southern San Joaquin Valley. Fresno had a high of 104 degrees, only one degree shy of the record for the date of 105 degrees, set in 1910. Fresno’s low on the 1st, 70 degrees, was one degree off the record high minimum temperature for the date of 71, set in 2001.

A series of upper-level disturbances moved through the Pacific Northwest on June 2nd, flattening the ridge and setting the stage for a sharp change in the weather. A strong upper-level trough reached California on June 4th, bringing the only significant rainfall of the month to the central and southern San Joaquin Valley. In the central San Joaquin Valley, there was a sharp north-south rainfall gradient, with Merced receiving 0.37 inch, while Fresno only had a trace of rain. In the Southern Sierra Nevada, two inches of snow fell on Tuolumne Meadows in Yosemite National Park, and light snow fell at White Wolf.

The main impacts of the trough were strong, gusty winds that hit much of the region as the cold front dropped south on the 5th, and the unseasonably cold airmass that followed the front. Ahead of the cold front, winds increased during the afternoon of June 4th. Wind gusted up to 40 mph on the San Joaquin Valley floor, and to around 50 mph in the Kern County mountains and deserts. The strongest gust at Fresno-Yosemite International Airport 40 mph tied the record for the strongest gust for the month of June, last set on June 10th, 2008. Blowing dust reduced visibilities to a quarter mile or less at times, and occasionally to near zero, on the Valley floor. A haboob (significant dust storm) accompanying a cold front occurred across the eastern side of the San Joaquin Valley causing near-zero visibility and reports of power outages (6000 customers without power in Fresno county) and downed trees in Fresno, Hanford, and Visalia. A 10-car pileup occurred on CA-99 near Delano (Kern County) at 1700 PDT.

San Joaquin Valley highs on June 5th were only in the lower to mid 70s, around 15 degrees below normal. This was in sharp contrast to the 1st, when Valley highs were around 15 degrees above normal.

The storm moved east of the central California interior on June 5th. Behind the upper-level trough, northwest winds aloft aligned with the passes and canyons of the Kern County mountain to generate strong wind gusts during the afternoon of June 5th. Winds gusted to 61 mph at the mouth of Jawbone Canyon and to 51 mph on the desert floor north of Mojave. The strongest winds occurred at Bird Springs Pass (elevation 7400 feet) about 10 miles southeast of Weldon in the Tehachapi Mountains. Here winds gusted up to 85 mph between 2 and 3 am on the 5th. Winds gusted over 60 mph between midnight and noon on the 5th!

A series of upper-level short-wave troughs subsequently moved through the western states, keeping temperatures below normal. The last of these disturbances brought another round of gusty winds to the region. Winds gusted to 35-45 mph in Merced County and western Fresno and Kings Counties during the afternoon of June 9th, and to 45-55 mph in the Lake Isabella and Mojave areas during the evening hours.

An upper-level ridge began building into California on June 10th, bringing a warming trend to the region. Temperatures in the central and southern San Joaquin Valley topped the century mark on the 12th, but fell back the next day as an upper-level low moved over the region.

Here's the weather wrap-up for the remainder of the month of June, 2012:

The low pressure system brought instability to the airmass over the Southern Sierra Nevada. Moisture from the remnant snowpack produced some clouds over the high country, a few of which developed into showers and isolated thunderstorms during the afternoons of June 14th through 16th. The westerly flow aloft kept most of the convection east of the Southern Sierra Nevada crest, and mainly over Mono County; however, 0.10 inch of rain fell at Lodgepole on June 16th, and 0.06 inch fell at Yosemite Valley.

High pressure then built back into California, bringing record heat to the central and southern San Joaquin Valley. Fresno set both a record high and a record high minimum on June 17th. The high at Fresno-Yosemite International Airport was 109 degrees, breaking the old record of 107, set in 1917. The low was 77 degrees; the previous record high minimum temperature for June 17th was 75, set in 1985. For Bakersfield, the high at Meadows Field 108 degrees was one degree from the record of 109, set in 1917.

An upper-level short-wave moved through northern California on June 18th, while this disturbance deepened the marine layer along the coast, the push of marine air through the Sacramento Delta only got as far south as Modesto. To the south, the upper-level ridge was only slightly weakened. As a result, temperatures in the central and southern San Joaquin Valley mostly remained a few degrees above normal through the 21st. One consequence of the ridge remaining over the central California interior was that June 21st remained dry at Fresno. This is the only date it has never rained at an official rain gauge in Fresno since records began in 1878, a string of 135 years.

An upper-level trough reached the California coast on June 22nd, bringing much cooler temperatures to the region. Highs in the central and southern San Joaquin Valley were mainly in the 80s on the 22nd, and only in the lower to mid 80s the next day. A strong blocking ridge over the south-central United States kept the trough along the coast for much of the last week of June, and upper-level disturbances rotating around the associated low brought pushes of marine air that kept temperatures below normal. The ridge built into California from the east on the 28th, warming temperatures to near normal, but the trough rebounded, cooling temperatures back to a few degrees below normal for the end of the month.

What forecasters said that day

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 Hanford, CA wrote its last area forecast discussion before the first event at Jun 4, 1:00 PM PST, 1 hour earlier.

Area forecast discussion, Jun 4, 1:00 PM PST, 1 hour before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
200 PM PDT MON JUN 4 2012

.SYNOPSIS...
AN ACTIVE COLD FRONT WILL MOVE ACROSS CENTRAL CALIFORNIA THIS
EVENING. EXPECT A SLIGHT CHANCE OF RAIN FROM FRESNO COUNTY NORTH.
WITH THE FRONTAL PASSAGE WINDY CONDITIONS CAN ALSO BE EXPECTED IN
THE VALLEY AND THE KERN COUNTY MOUNTAINS AND DESERTS. MUCH COOLER
TEMPERATURES ARE EXPECTED TUESDAY...THEN A SLOW WARMUP FOR THE REST
OF THE WEEK.

&&

.DISCUSSION...
PRECIPITATION HAS SPREAD AS FAR SOUTH AS MONTEREY AND STOCKTON...AS
THE UPPER-LEVEL TROUGH CONTINUES TO MOVE SLOWLY TOWARD THE CENTRAL
CALIFORNIA INTERIOR. BASED ON THE CURRENT TIMING...LIGHT RAIN COULD
REACH WESTERN MERCED COUNTY BY 23Z /1600 PDT/ TODAY...AND ACROSS THE
NORTHERN HALF OF THE HANFORD WARNING/FORECAST EVENING THIS EVENING.
A FEW LIGHTNING STRIKES HAVE DEVELOPED ALONG THE NORTHERN CALIFORNIA
COAST BEHIND THE FRONTAL CLOUD BAND...WHERE PARTIAL CLEARING HAS
ALLOWED SOME AFTERNOON HEATING. COULD SEE AN ISOLATED THUNDERSTORM
THIS EVENING AS THE COLD FRONT MOVES THROUGH...SO WILL LEAVE THE
SLIGHT CHANCE OF THUNDERSTORM ALTHOUGH CONFIDENCE IS LESSENING.

WINDS IN THE CENTRAL SAN JOAQUIN VALLEY HAVE INCREASED AHEAD OF THE
COLD FRONT...AND THE WIND ADVISORY ISSUED FOR THE WEST CENTRAL SAN
JOAQUIN VALLEY HAS ALREADY VERIFIED AT PACHECO PASS. WINDS IN THE
KERN COUNTY DESERTS CURRENTLY ARE GUSTING TO 30-35 MPH AND WILL
INCREASING THROUGH THE EVENING HOURS BEFORE TEMPORARILY DIMINISHING
AFTER MIDNIGHT. WINDS WILL INCREASE AGAIN BY MIDDAY TUESDAY. 12Z GFS
MOS GUIDANCE FOR EDWARDS AFB NORTH BASE /MAV9L2/ CONTINUES TO
FORECAST 30 KT SUSTAINED WINDS FOR 21Z TUESDAY...ALTHOUGH THE MAV
GUIDANCE HAS DELAYED THE ONSET OF THE SECOND ROUND OF STRONG GUSTS.
WINDS FUNNELING THROUGH THE PASSES AND CANYONS OF THE KERN COUNTY
MOUNTAINS COULD REACH WARNING CRITERIA BY LATE TUESDAY AFTERNOON...
AND A HIGH WIND WATCH HAS BEEN ISSUED FOR THE PASS AREAS FOR 00-04Z
WEDNESDAY /1700-2100 PDT TUESDAY/.

ANOTHER CONCERN THIS AFTERNOON IS THE THREAT OF SNOW OVER THE HIGH
COUNTRY OF THE SOUTHERN SIERRA NEVADA...ESPECIALLY AT YOSEMITE
NATIONAL PARK. THE SNOW LEVEL AT YOSEMITE WILL FALL TO AROUND 5500
FEET BY 12Z TUESDAY AS 700-MB TEMPERATURES FALL TO AROUND -9.5 C AND
850-MB TEMPERATURES FALL TO -3.5 TO -4.5 C. THE HEAVIEST
PRECIPITATION IS FORECAST TO END BY 06Z WEDNESDAY /2300 PDT TONIGHT/
BEFORE THE COLDEST AIR MOVES IN. AS A RESULT...SNOW ACCUMULATIONS ARE
EXPECTED TO BE LIGHT...AROUND AN INCH OR TWO ABOVE 7000 FEET. THIS
IS BELOW OFF-SEASON WINTER WEATHER ADVISORY CRITERIA...SO WILL
MENTION IN THE SPECIAL WEATHER STATEMENT ABOUT TONIGHT/S STORM.

MODEL GUIDANCE CONTINUES TO FORECAST CENTRAL AND SOUTHERN SAN
JOAQUIN VALLEY HIGHS TO BE ONLY IN THE LOWER TO MID 70S TUESDAY...
AROUND 15 DEGREE BELOW NORMAL.

THE TROUGH IS FORECAST TO LIFT NORTHEAST TUESDAY WITH A NORTHWEST
FLOW ALOFT SETTING UP OVER CALIFORNIA. A WEAK SHORT-WAVE RIDGE WILL
MOVE INTO THE STATE WEDNESDAY...AHEAD OF THE NEXT UPPER-LEVEL LOW
DROPPING OUT OF THE GULF OF ALASKA. THIS LOW IS FORECAST TO MOVE
INTO THE PACIFIC NORTHWEST FRIDAY WITH ITS TROUGH PUSHING INTO
CALIFORNIA AND LINGERING OVER THE STATE THROUGH THE WEEKEND AS
IMPULSES DROP INTO THE TROUGH.

THE MODELS BEGIN TO DIVERGE SUNDAY AS THE ECMWF DEVELOPS A LOW WEST
OF THE QUEEN CHARLOTTE ISLANDS. THE ECMWF HAS A SPLIT UPPER-LEVEL
FLOW OVER CALIFORNIA NEXT MONDAY...WHILE THE GFS LINGERS ITS TROUGH
OVER THE STATE.

&&

.AVIATION...
WINDS GUSTING TO 35 KNOTS OR GREATER CAN BE EXPECTED THROUGH AND
BELOW THE MOUNTAIN PASSES OF KERN COUNTY IN ADDITION TO THE SIERRA
CREST THROUGH 00Z WEDNESDAY. ISOLATED THUNDERSTORMS ARE ALSO POSSIBLE
UNTIL 06Z THIS EVENING IN THE SAN JOAQUIN VALLEY AND ADJACENT
FOOTHILLS FROM FRESNO COUNTY NORTHWARD AND IN THE SIERRA FROM
YOSEMITE N.P. TO KINGS CANYON. ADDITIONALLY...AREAS OF MVFR CEILINGS
CAN BE EXPECTED ALONG THE WESTERN SLOPES OF THE SIERRA AND THE
NORTHERN SLOPES OF THE TEHACHAPI MOUNTAINS BETWEEN 04Z AND 16Z
TUESDAY.

&&

.AIR QUALITY ISSUES...
NONE.

&&

.CERTAINTY...

THE LEVEL OF CERTAINTY FOR DAYS 1 AND 2 IS MEDIUM.
THE LEVEL OF CERTAINTY FOR DAYS 3 THROUGH 7 IS MEDIUM.

THIS INFORMATION IS PROVIDED AS PART OF A TRIAL PROJECT CONDUCTED
BY THE NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD.
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT
WWW.WEATHER.GOV/HNX/CERTAINTY.PHP /ALL LOWER CASE/ FOR ADDITIONAL
INFORMATION AND/OR TO PROVIDE FEEDBACK.

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 9 PM PDT TUESDAY FOR THE KERN COUNTY MOUNTAINS
AND DESERTS /CAZ095-098-099/.

HIGH WIND WATCH FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING
FOR THE PASSES IN THE KERN COUNTY MOUNTAINS /CAZ095/.

HIGH WIND WATCH FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING
FOR AREAS BELOW MOUNTAIN PASSES AND CANYONS IN THE KERN COUNTY
DESERTS /CAZ098-099/.

WIND ADVISORY UNTIL 11 PM PDT THIS EVENING FOR THE WEST CENTRAL
SAN JOAQUIN VALLEY /CAZ089/.

&&

PUBLIC...SANGER
AVN/FW...DURFEE
SYNOPSIS...PJ

WEATHER.GOV/HANFORD

Hazardous weather outlook, Jun 4, 10:17 AM PST, 3 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
1117 AM PDT MON JUN 4 2012

CAZ095-098-099-051830-
KERN COUNTY MOUNTAINS-INDIAN WELLS VALLEY-
SOUTHEASTERN KERN COUNTY DESERT-
1117 AM PDT MON JUN 4 2012

...MOUNTAIN AND DESERT WINDS...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE KERN COUNTY MOUNTAINS
AND DESERTS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A WIND ADVISORY IN EFFECT FROM 2 PM PDT THIS AFTERNOON TO 9 PM
PDT TUESDAY. FOR FURTHER INFORMATION PLEASE SEE THE LATEST
/SFONPWHNX/.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE WIND ADVISORY WILL REMAIN IN EFFECT UNTIL 9PM PDT TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT ANTICIPATED.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR
UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE.

CAZ089-051830-
WEST CENTRAL SAN JOAQUIN VALLEY-
1117 AM PDT MON JUN 4 2012

...VALLEY WIND...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WEST CENTRAL SAN
JOAQUIN VALLEY.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A WIND ADVISORY IS IN EFFECT FROM 2 PM PDT THIS AFTERNOON UNTIL
11 PM PDT THIS EVENING. PLEASE SEE THE LATEST /SFONPWHNX/ FOR
DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT ANTICIPATED.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR
UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE.

In the hours before

Special weather statement, Jun 4, 1:15 PM PST, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
215 PM PDT MON JUN 4 2012

CAZ089>099-042315-
WEST CENTRAL SAN JOAQUIN VALLEY-EAST CENTRAL SAN JOAQUIN VALLEY-
SOUTHWESTERN SAN JOAQUIN VALLEY-SOUTHEASTERN SAN JOAQUIN VALLEY-
MARIPOSA MADERA AND FRESNO COUNTY FOOTHILLS-
TULARE COUNTY FOOTHILLS-KERN COUNTY MOUNTAINS-
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
TULARE COUNTY MOUNTAINS-INDIAN WELLS VALLEY-
SOUTHEASTERN KERN COUNTY DESERT-
215 PM PDT MON JUN 4 2012

...AN UNSEASONABLY COLD STORM WILL IMPACT THE CENTRAL CALIFORNIA
INTERIOR TODAY AND TUESDAY...

A STORM SYSTEM MOVING THROUGH NORTHERN CALIFORNIA TODAY WILL
CONTINUE TO TRACK SOUTHEASTWARD TONIGHT AND TUESDAY. THE
ASSOCIATED COLD FRONT WILL BRING SUBSTANTIALLY COOLER WEATHER TO
THE CENTRAL CALIFORNIA INTERIOR...BEGINNING IN THE NORTH
TODAY...AND ACROSS THE ENTIRE REGION TUESDAY.

AS THE STORM MOVES INLAND...IT WILL BRING AN INCREASE IN CLOUDS
AND THE POSSIBILITY OF WET WEATHER FROM FRESNO COUNTY NORTHWARD
THIS EVENING. THE SHOWERS WILL BE MOST NUMEROUS IN THE SOUTHERN
SIERRA NEVADA NORTH OF KINGS CANYON. WHILE THE SNOW LEVEL WILL BE
WELL ABOVE 8000 FEET EARLY THIS EVENING...IT WILL FALL RAPIDLY
AFTER MIDNIGHT AS THE COLDEST AIR ARRIVES. A FEW SNOW SHOWERS
COULD OCCUR AS LOW AS 6000 FEET LATE TONIGHT IN AND NEAR
YOSEMITE PARK. SNOW ACCUMULATIONS OF AN INCH OR TWO WILL BE
POSSIBLE ON AND ABOVE TUOLUMNE MEADOWS...AND COULD IMPACT TIOGA
PASS LATE TONIGHT AND TOWARD DAYBREAK.

THE STORM WILL ALSO BE ACCOMPANIED BY GUSTY WINDS THIS EVENING
THROUGH TUESDAY EVENING...PARTICULARLY THROUGH AND BELOW THE
MOUNTAIN PASSES OF KERN COUNTY AND ALONG THE SIERRA NEVADA CREST
WHERE WINDS MAY GUST TO 70 MPH OR HIGHER. GUSTY WINDS TO 40 MPH
WILL ALSO OCCUR IN THE SAN JOAQUIN VALLEY...MAINLY BELOW PACHECO
PASS AND ALONG THE INTERSTATE 5 CORRIDOR. AREAS OF BLOWING DUST ARE
POSSIBLE...AND COULD RESULT IN DEGRADED AIR QUALITY LATE TODAY.

IT WILL BE MUCH COOLER TUESDAY WITH TEMPERATURES SOME 15 TO 20
DEGREES BELOW NORMAL. AS THE UPPER LOW PRESSURE AREA MOVES EAST OF
THE AREA TUESDAY EVENING...WINDS WILL DIMINISH...AND A GRADUAL
WARMUP WILL OCCUR FOR THE REMAINDER OF THE WEEK.

SANGER

WEATHER.GOV/HANFORD

Local storm report, Jun 4, 1:57 PM PST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
257 PM PDT MON JUN 04 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0225 PM     NON-TSTM WND GST W SAN LUIS DAM          37.05N 121.05W
06/04/2012  M40 MPH          MERCED             CA   MESONET

            NWS-OWNED INSTRUMENTATION AT PACHECO PASS.

0227 PM     NON-TSTM WND GST 30 WSW INYOKERN         35.48N 118.30W
06/04/2012  M51 MPH          KERN               CA   MESONET

            BIRD SPRINGS PASS RAWS.

0202 PM     NON-TSTM WND GST RIDGECREST              35.63N 117.66W
06/04/2012  M46 MPH          KERN               CA   MESONET

            RIDGECREST DW4346 APRS.

0136 PM     NON-TSTM WND GST ROSAMOND                34.86N 118.20W
06/04/2012  M46 MPH          KERN               CA   MESONET

            ROSAMOND KC0IGH APRS.

&&

SANGER

Local storm report, Jun 4, 1:58 PM PST, 2 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
258 PM PDT MON JUN 04 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0225 PM     NON-TSTM WND GST 2 W SAN LUIS DAM        37.05N 121.09W
06/04/2012  M40.00 MPH       MERCED             CA   MESONET

            NWS-OWNED INSTRUMENTATION AT PACHECO PASS.

&&

SANGER

Event by event

4 dust storm, 1 high wind, 1 strong wind. Local standard time, as filed.

Dust Storm, W Central S.J. Valley

When: June 4, 2:00 PM PST to 5:00 PM PST
Where: W Central S.J. Valley forecast zone
Property damage: $25,000
Reported by: Trained Spotter

Dust Storm, E Central S.J. Valley

When: June 4, 2:00 PM PST to 5:00 PM PST
Where: E Central S.J. Valley forecast zone
Property damage: $25,000
Reported by: Trained Spotter

Dust Storm, Sw S.J. Valley

When: June 4, 2:00 PM PST to 5:00 PM PST
Where: Sw S.J. Valley forecast zone
Property damage: $25,000
Reported by: Trained Spotter

Dust Storm, Se S.J. Valley

When: June 4, 2:00 PM PST to 5:00 PM PST
Where: Se S.J. Valley forecast zone
Property damage: $25,000
Reported by: Trained Spotter

High Wind, Kern Cty Mtns

When: June 5, 12:00 AM PST to 3:00 PM PST
Where: Kern Cty Mtns forecast zone
Measured: 74 kt (85 mph) measured gust
Reported by: Mesonet

Strong Wind, Se Kern Cty Desert

When: June 5, 5:00 AM PST to 6:00 PM PST
Where: Se Kern Cty Desert forecast zone
Measured: 49 kt (56 mph) estimated gust
Property damage: $5,000
Reported by: Mesonet

What these are

Dust Storm: Blowing dust that reduced visibility to a quarter mile or less.
High Wind: Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.
Strong Wind: Non-thunderstorm winds below high wind criteria that nonetheless caused damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in California in 2012 Every state in 2012 This day in weather history Warnings in California, June 2012

Sources

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: 396662, 396663, 396664, 396665, 396668, 396669.