Dense Fog in Texas, November 10 to 11, 2013

Name: Dense Fog in Texas, November 10 to 11, 2013
Start: 2013-11-10T23:00
End: 2013-11-11T10:00
Location: Texas

November 10 to 11, 2013 · NWS AMA · 18 events in 17 counties and zones

Where it happened

Every event with a place to put it; 18 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 18

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 AMA wrote it up.

Clear skies and light winds across the Texas Panhandle allowed strong radiational cooling during the late night hours of the 10th. The strong cooling coupled with low level moisture in place across the panhandle to cause the development of dense fog. The dense fog caused traffic issues during the morning commute across the panhandle. By 10 am on the 11th, low level mixing increased and dissipated the dense fog. The following towns dropped to a quarter mile or less visibility across the Texas Panhandle: Borger (Hutchinson County); Miami (Roberts County); Canadian (Hemphill County); Panhandle (Carson County); Pampa (Gray County); Shamrock (Wheeler County); Claude (Armstrong County); Clarendon (Donley County); Wellington (Collingsworth); Stratford (Sherman County); Spearman (Hansford County); Perryton (Ochiltree County); Lipscomb (Lipscomb County); Dumas (Moore County); Dalhart (Dallam and Hartley county); and Amarillo (Randall and Potter County).

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 Amarillo, TX wrote its last area forecast discussion before the first event at Nov 10, 8:01 PM CST, 2 hours 59 minutes earlier.

Area forecast discussion, Nov 10, 8:01 PM CST, 2 hours 59 minutes before

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
801 PM CST SUN NOV 10 2013

.UPDATE...
ISSUED A DENSE FOG ADVISORY FOR MAINLY THE CENTRAL AND EASTERN TEXAS
AND OKLAHOMA PANHANDLES THROUGH 15Z MONDAY. LOW CLOUDS FROM TEXAS
COUNTY OKLAHOMA SOUTH TO ARMSTRONG COUNTY TEXAS AND THEN EAST TO THE
TEXAS AND OKLAHOMA STATE LINE. JUST OUTSIDE OF THIS LOW CLOUD
DECK...FOG HAS QUICKLY DEVELOPED WITH THE LOSS OF DAYTIME HEATING AS
A LOW LEVEL INVERSION AT 850 MB STRENGTHENS. FEEL THAT THE DENSE FOG
WILL EVENTUALLY SPREAD EAST TO ALONG AND OFF THE CAPROCK LATER THIS
EVENING AND LATER TONIGHT. TEMP AND DEW POINT SPREAD OF 2 TO 4
DEGREES OR LESS CURRENTLY WITH DRIER AIR NOTED NEAR THE TEXAS AND NEW
MEXICO STATE LINE. WINDS ARE EXPECTED TO VEER MORE TO THE SOUTHWEST
OVERNIGHT ACROSS THE WESTERN PANHANDLES WHICH WILL INHIBIT THE
DEVELOPMENT OF ANY WIDESPREAD DENSE FOG ANYWAY...SO WILL LEAVE THE
WESTERN SECTIONS OF THE FORECAST AREA OUT OF THE DENSE FOG ADVISORY
FOR NOW. WILL CONTINUE TO MONITOR DEVELOPMENTS. THE LATEST 00Z
HRRR...WHICH ACCURATELY FORECAST THE DENSE FOG LAST NIGHT AND THIS
MORNING...ALSO SUPPORTING THE DEVELOPMENT OF DENSE FOG ONCE AGAIN
AFTER 00Z MONDAY.

SCHNEIDER

&&

.PREV DISCUSSION... /ISSUED 614 PM CST SUN NOV 10 2013/

AVIATION...
00Z TAFS...STRATUS DECK WITH CIGS GENERALLY IN THE MVFR RANGE HAS
BEEN SLOWLY ERODING FROM WEST TO EAST LATE THIS AFTERNOON/EARLY
EVENING. SHORT-RANGE MODELS SUGGEST THIS TREND WILL CONTINUE DESPITE
THE ONSET OF NOCTURNAL COOLING AS SOUTHWEST WINDS JUST ABOVE THE
SURFACE STRENGTHEN. HOWEVER...WITH SURFACE WINDS REMAINING
SOUTH/SOUTHEASTERLY THIS EVENING AND SURFACE DEWPOINT DEPRESSIONS
ALREADY LESS THAN 5 DEGREES AT KAMA AND KGUY...FOG AND/OR VERY LOW
CLOUDS /CIGS 500 FT AGL OR LESS/ WILL LIKELY REDEVELOP LATER THIS
EVENING AS TEMPERATURES CONTINUE TO COOL AND LOW-LEVEL MOISTURE IS
MAINTAINED. THUS IFR TO LIFR CONDITIONS ARE FORECAST AT KAMA AND KGUY
STARTING AROUND 03-04Z. WINDS DO GRADUALLY VEER TO THE SOUTHWEST
AFTER MIDNIGHT...WHICH COULD HELP TO IMPROVE CONDITIONS LATE TONIGHT.
CONFIDENCE IN THE DETAILS IS LOW THOUGH...AS WIND SPEEDS WILL REMAIN
LIGHT AND GIVEN THE TIME OF DAY...SO WILL KEEP THE IFR/LIFR FORECAST
GOING UNTIL 14-15Z MONDAY.

WILL KEEP KDHT VFR OVERNIGHT AS LARGER TEMPERATURE/DEWPOINT SPREADS
CURRENTLY IN PLACE AND AN EARLIER ONSET OF LIGHT SOUTHWEST TO WEST
WINDS SHOULD KEEP THE FOG AND LOW CLOUDS JUST TO THE EAST.

VFR CONDITIONS ARE EXPECTED AT ALL TERMINALS AFTER 15Z MONDAY. WINDS
WILL TURN TO THE NORTHEAST MONDAY AFTERNOON...WITH THE STRONGER WINDS
BEHIND THE TRUE COLD FRONTAL SURGE JUST GETTING INTO KGUY TOWARD THE
TAIL END OF THIS FORECAST PERIOD.

KB

PREV DISCUSSION... /ISSUED 233 PM CST SUN NOV 10 2013/

DISCUSSION...
AN ACTIVE PATTERN IS SHAPING UP THROUGH THE WEEK.

TONIGHT...A NEARLY SATURATED BOUNDARY LAYER IS ONCE AGAIN POSSIBLE
TONIGHT. UNLIKE THIS MORNING HOWEVER...WINDS WILL BE SOUTHWESTERLY
FOR MOST OF THE NIGHT...WHICH SHOULD PRECLUDE ANY DENSE FOG...BUT
AREAS OF FOG WILL BE POSSIBLE...ESPECIALLY FOR LOCATIONS OFF THE
CAPROCK.

MONDAY THROUGH TUESDAY...REMAINS THE PERIOD OF MOST INTEREST THROUGH
THE WEEK. IN A COMPLETE REVERSAL FROM MODEL RUNS YESTERDAY...THE 12Z
RUNS OF THE NAM AND GFS HAVE TRENDED FASTER WITH THE FRONT. IT NOW
APPEARS THAT THE FRONT WILL BE IN...IF NOT THROUGH THE OK PANHANDLE
BY 21Z MONDAY. GIVEN PRESSURE RISES BEHIND THE FRONT ON THE ORDER OF
10 MB/6 HR...THINK THE FASTER SOLUTION IS THE MOST LIKELY.
THUS...DECREASED HIGHS ACROSS THE NORTH ON MONDAY. AS FOR THE
RAIN...DRIZZLE...AND FREEZING DRIZZLE POTENTIAL...THE NAM REMAINS THE
WETTEST SOLUTION...WITH A POTENTIAL FOR PRECIP ACROSS MUCH OF THE
AREA FROM MONDAY EVENING THROUGH TUESDAY NIGHT. HOWEVER...GIVEN HOW
FAR NORTH THE SOURCE REGION IS FOR THIS AIR MASS...AND GIVEN HOW COLD
THE AIR MASS WILL STILL BE WHEN IT MOVES OVER THE REGION...THINK THE
DRIER GFS SOLUTION IS MORE LIKELY. THIS SHOWS A SLIGHT CHANCE OF
ACCUMULATING PRECIP ONLY IN THE SE TX PANHANDLE ON MONDAY
EVENING...WITH SOME FREEZING DRIZZLE LINGERING IN THE SOUTHERN TX
PANHANDLE THROUGH EARLY TUESDAY MORNING. HAVE ADJUSTED POPS AND WX TO
ACCOUNT FOR THIS...THOUGH UNCERTAINTY WILL REMAIN UNTIL WE CAN GET A
BETTER IDEA OF LOW LEVEL MOISTURE WITH THIS AIR MASS BASED ON
UPSTREAM OBSERVED DEW POINTS TOMORROW.

WEDNESDAY THROUGH FRIDAY...TEMPERATURES STILL APPEAR SLOW TO
RECOVER...DESPITE THE FACT THAT THE REGION WILL ONLY HAVE A GLANCING
BLOW FROM THE AIR MASS. STILL CONSIDERABLE UNCERTAINTY IN THE TIMING
OF UPPER LEVEL SHORT WAVE TROUGHS AT THE END OF THE WEEK.
HOWEVER...BOTH THE GFS AND THE ECMWF NOW SHOW DRY CONDITIONS AS THE
LEADING SHORT WAVE TROUGH SLIDES EAST OF THE HIGH PLAINS THURSDAY
OR THURSDAY NIGHT. THIS SEEMS REASONABLE SINCE THERE IS LIMITED
OPPORTUNITY FOR LOW LEVEL MOISTURE RETURN BEFORE THURSDAY.
THUS...HAVE REMOVED MENTION OF PRECIPITATION FROM THURSDAY NIGHT.
HOWEVER...DID INCLUDE A SLIGHT CHANCE FOR RAIN ACROSS THE EASTERN
PANHANDLES FRIDAY NIGHT...RELATED TO THE NEXT UPPER LEVEL SHORT WAVE
TROUGH DIGGING IN TO THE REGION.

JOHNSON

FIRE WEATHER...
WITH RELATIVE HUMIDITY VALUES WILL REMAIN ABOVE 20 PERCENT FOR THE
NEXT SEVERAL DAYS...PRECLUDING ANY ELEVATED OR CRITICAL FIRE WEATHER
CONDITIONS.

JOHNSON

&&

.AMA WATCHES/WARNINGS/ADVISORIES...
TX...DENSE FOG ADVISORY UNTIL 9 AM CST MONDAY FOR THE FOLLOWING
     ZONES: ARMSTRONG...CARSON...COLLINGSWORTH...DONLEY...GRAY...
     HANSFORD...HEMPHILL...HUTCHINSON...LIPSCOMB...MOORE...
     OCHILTREE...POTTER...RANDALL...ROBERTS...SHERMAN...WHEELER.

OK...DENSE FOG ADVISORY UNTIL 9 AM CST MONDAY FOR THE FOLLOWING
     ZONES: BEAVER...TEXAS.

&&

08/11

Hazardous weather outlook, Nov 10, 7:39 PM CST, 3 hours 21 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
739 PM CST SUN NOV 10 2013

OKZ001>003-TXZ001>020-111200-
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
739 PM CST SUN NOV 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA
PANHANDLES.

.DAY ONE...TONIGHT.

WIDESPREAD DENSE FOG IS EXPECTED ACROSS THE EASTERN AND CENTRAL TEXAS
AND OKLAHOMA PANHANDLES TONIGHT...WHERE A DENSE FOG ADVISORY HAS BEEN
ISSUED. VISIBILITIES NEAR ONE QUARTER OF A MILE OR LESS WILL BE
LIKELY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THE DENSE FOG IS EXPECTED TO CONTINUE THROUGH MID MORNING MONDAY. THE
DENSE FOG ADVISORY FOR THE CENTRAL AND EASTERN TEXAS AND OKLAHOMA
PANHANDLES WILL EXPIRE AT 9 AM MONDAY MORNING.

PATCHY FREEZING DRIZZLE IS POSSIBLE EARLY TUESDAY MORNING. LITTLE TO
NO ICE ACCUMULATIONS ARE EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

SCHNEIDER

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

18 dense fog. Local standard time, as filed.

Dense Fog, Sherman

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Sherman forecast zone
Reported by: Mesonet
Coordinates: 36.278, -101.893 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Stratford.

Dense Fog, Hansford

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Hansford forecast zone
Reported by: Mesonet
Coordinates: 36.278, -101.354 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Spearman.

Dense Fog, Ochiltree

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Ochiltree forecast zone
Reported by: Mesonet
Coordinates: 36.278, -100.816 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Perryton.

Dense Fog, Ochiltree

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Ochiltree forecast zone
Reported by: Mesonet
Coordinates: 36.278, -100.816 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Lipscomb.

Dense Fog, Moore

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Moore forecast zone
Reported by: Mesonet
Coordinates: 35.838, -101.893 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Dumas.

Dense Fog, Hutchinson

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Hutchinson forecast zone
Reported by: Mesonet
Coordinates: 35.840, -101.355 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Stinnett.

Dense Fog, Roberts

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Roberts forecast zone
Reported by: Mesonet
Coordinates: 35.839, -100.813 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Miami.

Dense Fog, Hemphill

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Hemphill forecast zone
Reported by: Mesonet
Coordinates: 35.838, -100.270 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Canadian.

Dense Fog, Potter

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Potter forecast zone
Reported by: ASOS
Coordinates: 35.401, -101.894 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Amarillo.

Dense Fog, Randall

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Randall forecast zone
Reported by: ASOS
Coordinates: 34.966, -101.897 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Amarillo.

Dense Fog, Carson

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Carson forecast zone
Reported by: Mesonet
Coordinates: 35.404, -101.354 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Panhandle.

Dense Fog, Gray

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Gray forecast zone
Reported by: Mesonet
Coordinates: 35.401, -100.813 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Pampa.

Dense Fog, Wheeler

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Wheeler forecast zone
Reported by: Mesonet
Coordinates: 35.401, -100.270 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Shamrock.

Dense Fog, Armstrong

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Armstrong forecast zone
Reported by: Mesonet
Coordinates: 34.965, -101.357 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Claude.

Dense Fog, Donley

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Donley forecast zone
Reported by: Mesonet
Coordinates: 34.965, -100.814 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Clarendon.

Dense Fog, Collingsworth

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Collingsworth forecast zone
Reported by: Mesonet
Coordinates: 34.965, -100.270 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Wellington.

Dense Fog, Dallam

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Dallam forecast zone
Reported by: ASOS
Coordinates: 36.278, -102.602 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Dalhart.

Dense Fog, Hartley

When: November 10, 11:00 PM CST to November 11, 10:00 AM CST
Where: Hartley forecast zone
Reported by: ASOS
Coordinates: 35.840, -102.603 (the zone’s center; the record gives no point)

Less than 1/4 mile visibility at Dalhart.

What these are

Dense Fog: Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.

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

The same day elsewhere

Every storm in Texas in 2013 Every state in 2013 This day in weather history Warnings in Texas, November 2013

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: 477241, 477242, 477243, 477244, 477245, 477246, 477247, 477248, 477249, 477250, 477251, 477252, 477253, 477254, 477255, 477256, 477257, 477258.