Alert archive / Oklahoma / Red Flag Warnings in 2026

Red Flag Warning 21, NWS Norman, OK

April 15, 20266 counties in Oklahoma

NWS Norman, OK issued this red flag warning at Apr 15, 2026, 2:02 PM CDT for 6 counties in Oklahoma. It took effect at Apr 16, 2026, 12:00 PM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 15, 2026, 2:02 PM CDT (19:02 UTC)
In effect from
Apr 16, 2026, 12:00 PM CDT
Expired
Apr 16, 2026, 9:00 PM CDT
In force
9 hr
Issued by
NWS Norman, OK

Counties Beckham County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 136 km from the middle of the area, began a volume at 19:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.0 hours before the alert went out and 217 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2026-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1732 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2026-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 354 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1732 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
354 m²/s²
0-3 km storm-relative helicity
400 m²/s²
Significant tornado parameter
3.7
Supercell composite
14.7

Open this sounding in Storm Lab

The text

As transmitted.

286 
WWUS84 KOUN 151902
RFWOUN

URGENT - FIRE WEATHER MESSAGE
National Weather Service Norman OK
202 PM CDT Wed Apr 15 2026


OKZ004-005-009-010-014-021-170200-
/O.NEW.KOUN.FW.W.0021.260416T1700Z-260417T0200Z/
Harper-Woods-Ellis-Woodward-Roger Mills-Beckham-
202 PM CDT Wed Apr 15 2026

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM CDT THURSDAY FOR
HOT, DRY AND WINDY CONDITIONS ACROSS NORTHWESTERN OKLAHOMA...

The National Weather Service in Norman has issued a Red Flag
Warning, which is in effect from noon to 9 PM CDT Thursday.

* WINDS...South 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 7 percent.

* TEMPERATURES...Up to 90.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

* SEVERITY...

  FUELS (ERC)...70th-89th percentile...4 (out of 5).

  WEATHER...Near Critical...2 (out of 5).

  FIRE ENVIRONMENT...6 (out of 10).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures will
contribute to extreme fire behavior.

&&

$$
2 follow-up statements
020 
WWUS84 KOUN 160717
RFWOUN

URGENT - FIRE WEATHER MESSAGE
National Weather Service Norman OK
217 AM CDT Thu Apr 16 2026


OKZ004-005-009-010-014-021-170200-
/O.CON.KOUN.FW.W.0021.260416T1700Z-260417T0200Z/
Harper-Woods-Ellis-Woodward-Roger Mills-Beckham-
217 AM CDT Thu Apr 16 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM CDT
THIS EVENING FOR HOT, DRY AND WINDY CONDITIONS ACROSS
NORTHWESTERN OKLAHOMA...

* WINDS...Southwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 8 percent.

* TEMPERATURES...Up to 91.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

* SEVERITY...

  FUELS (ERC)...70th-89th percentile...4 (out of 5).

  WEATHER...Near Critical...2 (out of 5).

  FIRE ENVIRONMENT...6 (out of 10).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures will
contribute to extreme fire behavior.

&&

$$
258 
WWUS84 KOUN 161953
RFWOUN

URGENT - FIRE WEATHER MESSAGE
National Weather Service Norman OK
253 PM CDT Thu Apr 16 2026


OKZ004-005-009-010-014-021-170400-
/O.NEW.KOUN.FW.W.0022.260417T1700Z-260418T0200Z/
/O.CON.KOUN.FW.W.0021.000000T0000Z-260417T0200Z/
Harper-Woods-Ellis-Woodward-Roger Mills-Beckham-
253 PM CDT Thu Apr 16 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING 
ACROSS NORTHWEST AND WESTERN OKLAHOMA... 

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM CDT FRIDAY FOR
HOT, DRY AND WINDY CONDITIONS ACROSS NORTHWEST AND WESTERN 
OKLAHOMA...

The National Weather Service in Norman has issued a Red Flag
Warning, which is in effect from noon to 9 PM CDT Friday.

* WINDS...Today, south-southwest at 15 to 20 mph with gusts up to
  35 mph. On Friday, southwest at 15 to 25 mph with gusts to 40
  mph shifting to the north-northwest at 20 to 25 mph with gusts
  to 45 mph possible.

* RELATIVE HUMIDITY...As low as 8 percent.

* TEMPERATURES...Up to 90.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

* SEVERITY...

  FUELS (ERC)...70th-89th percentile...4 (out of 5).

  WEATHER...Near Critical...2 (out of 5).

  FIRE ENVIRONMENT...6 (out of 10).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures will
contribute to extreme fire behavior.

&&

$$

OKZ015-016-022-170400-
/O.NEW.KOUN.FW.W.0022.260417T1700Z-260418T0200Z/
Dewey-Custer-Washita-
253 PM CDT Thu Apr 16 2026

..RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM CDT FRIDAY FOR
HOT, DRY AND WINDY CONDITIONS ACROSS WESTERN OKLAHOMA...

The National Weather Service in Norman has issued a Red Flag
Warning, which is in effect from noon to 9 PM CDT Friday.

* WINDS...South 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 28 percent.

* TEMPERATURES...Up to 86.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

* SEVERITY...

  FUELS (ERC)...50th-69th percentile...3 (out of 5).

  WEATHER...Elevated...1 (out of 5).

  FIRE ENVIRONMENT...4 (out of 10).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures will
contribute to extreme fire behavior.

&&

$$

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this red flag warning went out at Apr 15, 1:00 PM CDT, 1 hour 2 minutes earlier. Its key messages:

  • Updated at 1230 PM CDT Wed Apr 15 2026
  • Strong to severe thunderstorms possible Wednesday and Friday.
  • Elevated to near-critical fire weather conditions will return several days this week, especially across portions of northwestern and far western Oklahoma.
  • Dry and cooler weather this weekend.
Area forecast discussion, Apr 15, 1:00 PM CDT, 1 hour 2 minutes before
Area Forecast Discussion
National Weather Service Norman OK
100 PM CDT Wed Apr 15 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 1230 PM CDT Wed Apr 15 2026

- Strong to severe thunderstorms possible Wednesday and Friday.

- Elevated to near-critical fire weather conditions will return
  several days this week, especially across portions of
  northwestern and far western Oklahoma.

- Dry and cooler weather this weekend.

&&

.NEAR TERM...
(Through Wednesday)
Issued at 149 AM CDT Wed Apr 15 2026

Early this morning, a few elevated showers and thunderstorms are
moving across southwestern and central Oklahoma.  This activity may
produce small hail, brief heavy rainfall and strong gusty winds.
A few global models continue develop more widespread showers and
thunderstorms across parts of south central and southeastern
Oklahoma before sunrise, while CAMs keep coverage isolated to
widely scattered. Ceiling heights across south central and
southeastern Oklahoma are roughly 4-6k feet and soundings suggest
about 1000 J/kg of elevated CAPE. For now will side with more
isolated to widely scattered coverage through sunrise.

Later this afternoon, at least scattered thunderstorms are expected
to develop along a near a dryline.  The dryline will be located
farther east than Tuesday, so perhaps initial storm develop will be
along and east of an Enid to Lawton and Seymour, Texas line. It's
possible that upscale growth will occur quickly to an MCS or line
segments. This would limit the large hail risk to the first few
hours of development with an evolution to strong winds, smaller
hail, and heavy rainfall.

&&

.SHORT TERM...
(Wednesday night through Friday night)
Issued at 149 AM CDT Wed Apr 15 2026

A trailing shortwave trough is expected to move across the
Panhandles and western Oklahoma late Wednesday evening into early
Thursday morning. Although a majority of the convection will be
confined to the eastern third of Oklahoma by late Wednesday
evening, some lingering precipitation is possible.

With mainly dry conditions expected on Thursday, focus will turn to
fire weather conditions across western Oklahoma during the afternoon.
Temperatures will be very warm to hot, and afternoon humidity
will fall to around 10 to 15 percent across the western third of
the state including the adjacent area of northern Texas. A
southwesterly wind will be a little breezy but wind gusts are
expected to be in the 25-30 mph range.

Thursday evening and overnight, a shortwave trough will approach in
southwesterly flow aloft.  This may result widely scattered showers
and perhaps thunderstorms.  Most of this activity should be
northeast of the area by mid to late morning.

By mid afternoon Friday, a dryline is expected to sharpen across
western Oklahoma, as an upper trough approaches the northern and
central Plains. With mid to upper 60s dewpoint in place,
instability will increase to around 3000 J/kg. So if a few storms
develop along the dry, supercells are likely with a risk of very
large hail, damaging winds and tornadoes. By early to mid evening,
a strong cold front will begin to move across parts of western
and northern Oklahoma. Thunderstorms will likely develop along the
front with a risk of damaging winds and hail. The surface cold
front will clear southeastern Oklahoma by early Saturday morning.

&&

.LONG TERM...
(Saturday through Tuesday)
Issued at 149 AM CDT Wed Apr 15 2026

Northerly winds behind a cold front will continue to usher in a much
drier airmass on Saturday.  An elevated frontal boundary across
south central and southeastern Oklahoma may result in scattered
showers through the late morning/early afternoon.

With portions of western Oklahoma missing out on the recent
rainfall, elevated fire weather conditions will be possible Saturday
afternoon, especially across northwestern Oklahoma where fuels
remain receptive to fire.

With a clear sky expected and light winds, portions of northern and
western Oklahoma may see a light freeze by sunrise Sunday.
Currently, forecast temperatures are in the mid 30s, but certainly
would not be surprised to see some upper 20s to lower 30s.

After a cold start Sunday, temperatures will warm into the lower and
mid 70s by afternoon.  The wind will become a little breezy across
western Oklahoma, so maybe a few hours of elevated fire weather
conditions during the afternoon.

A low amplitude shortwave trough will move across Texas late Sunday
into Monday.  This may result in a few showers and storms mainly
across southern Oklahoma and northern Texas late Sunday into Monday.

On Tuesday, a breezy southerly wind is expected with modest moisture
return.  Rain and storm chances will remain around 10 percent during
the day.

&&

.AVIATION...
(18Z TAFS)
Issued at 1230 PM CDT Wed Apr 15 2026

Dense cloud cover producing broken ceilings will keep a few of our
terminals in central Oklahoma under periods of MVFR conditions
through 00Z. A dryline was advancing across western Oklahoma which
could produce isolated thunderstorms this afternoon impacting all
terminals east of the dryline before retreating westward after
sundown. Terminals KWWR & KCSM will remain west of the dryline
with no storm activity but have TEMPOS for TSRA across our
remaining terminals through 01Z although will keep terminal KDUA
through 06Z. Surface winds go light after 00Z although cannot rule
out any outflow boundaries from potential storm activity affecting
surface winds. A low-level jet will set up tonight generally
across southeast Oklahoma which could produce low-level wind shear
conditions after 06Z affecting only terminals KDUA and KSPS.
Stratus may increase late tonight across southeast to central
Oklahoma between 08-14Z with a higher potential for radiational
fog development in western Oklahoma closer to the dryline. As a
result all terminals east of the retreated dryline (all expect
for KWWR) could reduce to MVFR or periods of IFR categories due to
potential low ceilings and/or lowered visibilities.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  81  59  86  65 /  70  30   0  10
Hobart OK         86  53  90  62 /  40  10   0  10
Wichita Falls TX  85  61  91  65 /  60  10   0  10
Gage OK           83  47  89  60 /  10   0   0   0
Ponca City OK     82  56  85  64 /  60  40   0   0
Durant OK         78  64  86  66 /  80  50  10  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

NEAR TERM...06
SHORT TERM...06
LONG TERM....06
AVIATION...68

In the hours before

Special weather statement, Apr 15, 8:47 AM CDT, 5 hours 15 minutes before
Special Weather Statement
National Weather Service Norman OK
847 AM CDT Wed Apr 15 2026

OKZ047-051-052-151415-
Johnston OK-Marshall OK-Bryan OK-
847 AM CDT Wed Apr 15 2026

...A strong thunderstorm will impact portions of south central
Johnston, northwestern Bryan and eastern Marshall Counties through
915 AM CDT...

At 847 AM CDT, Doppler radar was tracking a strong thunderstorm near
Lake Texoma, moving northeast at 40 mph.

HAZARD...Wind gusts of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Durant, Kingston, Silo, Mead, Little City, Woodville, Nida,
northeastern Lake Texoma, and Mcbride.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3396 9686 3418 9653 3401 9635 3390 9664
      3392 9666 3391 9668 3388 9668 3385 9677
TIME...MOT...LOC 1347Z 237DEG 35KT 3394 9673

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

30
Local storm report, Apr 15, 9:07 AM CDT, 4 hours 55 minutes before
Preliminary Local Storm Report
National Weather Service Norman OK
907 AM CDT Wed Apr 15 2026

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

0856 AM     Hail             3 SW Woodville          33.94N 96.69W
04/15/2026  E1.00 Inch       Marshall           OK   Public

            Report from mPING: Quarter (1.00 in.).

&&
Special weather statement, Apr 15, 9:07 AM CDT, 4 hours 55 minutes before
Special Weather Statement
National Weather Service Norman OK
907 AM CDT Wed Apr 15 2026

OKZ048-051-052-151430-
Atoka OK-Marshall OK-Bryan OK-
907 AM CDT Wed Apr 15 2026

...Strong thunderstorms will impact portions of northwestern Bryan,
east central Marshall and southwestern Atoka Counties through 930 AM
CDT...

At 907 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Caddo to near Mead to 4 miles north of
Colbert. Movement was northeast at 40 mph.

HAZARD...Wind gusts of 30 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Durant, Colbert, Caddo, Bokchito, Silo, Tushka, Caney, Kenefic, Mead,
Armstrong, Cartwright, Blue, eastern Lake Texoma, Calera, and
Bentley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3416 9598 3415 9597 3414 9595 3407 9594
      3383 9657 3388 9660 3389 9659 3390 9661
      3402 9667 3412 9651 3411 9646 3415 9645
      3416 9641 3418 9641 3438 9608 3416 9586
TIME...MOT...LOC 1407Z 242DEG 34KT 3414 9627 3402 9655 3392 9653

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...30 MPH

30

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 14, 7:01 PM CDTSpecial Weather StatementOUNCaddo, Custer, Kiowa, Washita29 min
Apr 14, 7:13 PM CDTSevere Thunderstorm Warning Considerable damage threatOUNJackson, Tillman47 min
Apr 14, 7:21 PM CDTSevere Thunderstorm WarningOUNComanche24 min
Apr 14, 7:28 PM CDTSpecial Weather StatementOUNCaddo, Canadian62 min
Apr 14, 7:36 PM CDTAreal Flood AdvisoryOUNComanche67 min
Apr 14, 7:42 PM CDTSpecial Weather StatementOUNComanche33 min
Apr 14, 7:49 PM CDTSpecial Weather StatementOUNMcClain26 min
Apr 14, 7:52 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Stephens, Tillman38 min
Apr 14, 8:14 PM CDTSpecial Weather StatementOUNCleveland31 min
Apr 14, 8:24 PM CDTFlash Flood WarningOUNComanche2 hr
Apr 14, 8:25 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Cotton, Grady, Jefferson, Stephens50 min
Apr 14, 8:39 PM CDTSpecial Weather StatementOUNPottawatomie36 min
Apr 14, 8:49 PM CDTSpecial Weather StatementOUNNoble26 min
Apr 14, 9:01 PM CDTSevere Thunderstorm WarningOUNCarter, Cleveland, Garvin, Grady, McClain, Stephens44 min
Apr 14, 9:09 PM CDTSpecial Weather StatementOUNNoble36 min
Apr 14, 9:17 PM CDTSpecial Weather StatementOUNPottawatomie, Seminole28 min
Apr 14, 9:29 PM CDTSevere Thunderstorm WarningOUNCleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole46 min
Apr 14, 9:32 PM CDTAreal Flood AdvisoryOUNGarvin, Grady, Stephens118 min
Apr 14, 10:00 PM CDTSevere Thunderstorm WarningOUNHughes, Pontotoc, Seminole45 min
Apr 14, 11:32 PM CDTSpecial Weather StatementOUNSeminole43 min
Apr 15, 12:47 AM CDTSpecial Weather StatementOUNGrady28 min
Apr 15, 1:10 AM CDTSpecial Weather StatementOUNGrady50 min
Apr 15, 1:14 AM CDTSevere Thunderstorm WarningOUNCleveland, Grady, McClain46 min
Apr 15, 1:56 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain, Oklahoma49 min
Apr 15, 2:24 AM CDTSpecial Weather StatementOUNPottawatomie36 min
Apr 15, 8:47 AM CDTSpecial Weather StatementOUNMarshall28 min
Apr 15, 9:07 AM CDTSpecial Weather StatementOUNBryan23 min
Apr 15, 2:43 PM CDTRiver Flood AdvisoryOUNComanche, Cotton18 hr
Apr 15, 3:42 PM CDTSpecial Weather StatementOUNOkfuskee33 min
Apr 15, 4:08 PM CDTSevere Thunderstorm WarningOUNCotton, Jefferson52 min
Apr 15, 4:44 PM CDTSpecial Weather StatementOUNStephens31 min
Apr 15, 4:53 PM CDTSevere Thunderstorm WarningOUNGarvin, Grady, Stephens23 min
Apr 15, 5:29 PM CDTSpecial Weather StatementOUNJefferson31 min
Apr 15, 5:41 PM CDTSpecial Weather StatementOUNJohnston34 min
Apr 15, 5:44 PM CDTAreal Flood AdvisoryOUNJefferson3 hr
Apr 15, 6:00 PM CDTSevere Thunderstorm WarningOUNJefferson45 min
Apr 15, 6:05 PM CDTAreal Flood AdvisoryOUNCarter3 hr
Apr 15, 6:17 PM CDTSpecial Weather StatementOUNPayne28 min
Apr 15, 6:20 PM CDTSpecial Weather StatementOUNJohnston, Love25 min
Apr 15, 6:23 PM CDTSpecial Weather StatementOUNAtoka37 min
Apr 15, 6:28 PM CDTSevere Thunderstorm WarningOUNNoble, Payne14 min
Apr 15, 6:42 PM CDTSevere Thunderstorm WarningOUNAtoka, Carter, Coal, Hughes, Jefferson, Johnston and 4 more48 min
Apr 15, 6:43 PM CDTSevere Thunderstorm WarningOUNJefferson, Love47 min
Apr 15, 6:53 PM CDTFlash Flood WarningOUNCarter3 hr
Apr 15, 6:57 PM CDTSpecial Weather StatementOUNPayne33 min

Nearby

Red Flag Warnings in Oklahoma, 2026Every red flag warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.