Alert archive / Arkansas / Tornado Warnings in 2021

Tornado Warning 40, NWS Tulsa, OK

October 15, 2021Madison County, Arkansas

NWS Tulsa, OK issued this tornado warning at Oct 15, 2021, 5:32 AM CDT for Madison County, Arkansas. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 15, 2021, 5:32 AM CDT (10:32 UTC)
Expired
Oct 15, 2021, 5:58 AM CDT
In force
26 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Madison County, AR

The radar

The Western Arkansas radar (KSRX), 90 km from the middle of the area, began a volume at 10:31 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

Springfield, MO (KSGF), launched 00:00Z, 10.5 hours before the alert went out and 115 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, Springfield, MO at 00:00Z on 2021-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 130 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, Springfield, MO at 00:00Z on 2021-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939587897Sfc1 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
130 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

140 
WFUS54 KTSA 151032
TORTSA
ARC087-151115-
/O.NEW.KTSA.TO.W.0040.211015T1032Z-211015T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
532 AM CDT Fri Oct 15 2021

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Southern Madison County in northwestern Arkansas...

* Until 615 AM CDT.
    
* At 532 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles west of Saint Paul, moving east at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations in or near the path include...
  St. Paul...                       Saint Paul...
  Pettigrew...                      Witter...
  Boston...                         Dutton...
  Red Star...                       Weathers...
  Delaney...                        Brashears...
  Crosses...                        Patrick...
  Combs...                          

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3595 9349 3593 9349 3592 9351 3588 9351
      3588 9352 3578 9352 3576 9360 3577 9391
      3576 9391 3576 9396 3583 9396 3584 9395
      3590 9395 3607 9345 3597 9345
TIME...MOT...LOC 1032Z 254DEG 26KT 3583 9392 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$
2 follow-up statements
061 
WWUS54 KTSA 151044
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
544 AM CDT Fri Oct 15 2021

ARC087-151115-
/O.CON.KTSA.TO.W.0040.000000T0000Z-211015T1115Z/
Madison AR-
544 AM CDT Fri Oct 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR SOUTHERN
MADISON COUNTY...
    
At 544 AM CDT, a severe thunderstorm capable of producing a tornado
was located near St. Paul, moving east at 35 mph.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations in or near the path include...
St. Paul...                       Saint Paul...
Pettigrew...                      Witter...
Boston...                         Dutton...
Red Star...                       Combs...
Weathers...                       Brashears...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3577 9386 3592 9390 3593 9387 3603 9345
      3597 9345 3595 9349 3593 9349 3592 9351
      3588 9351 3588 9352 3578 9352 3576 9358
      3576 9362
TIME...MOT...LOC 1044Z 258DEG 31KT 3585 9379 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN

$$
347 
WWUS54 KTSA 151058
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
558 AM CDT Fri Oct 15 2021

ARC087-151108-
/O.CAN.KTSA.TO.W.0040.000000T0000Z-211015T1115Z/
Madison AR-
558 AM CDT Fri Oct 15 2021

...THE TORNADO WARNING FOR SOUTHERN MADISON COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3577 9386 3592 9390 3593 9387 3603 9345
      3597 9345 3595 9349 3593 9349 3592 9351
      3588 9351 3588 9352 3578 9352 3576 9358
      3576 9362
TIME...MOT...LOC 1057Z 254DEG 26KT 3588 9367 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 14, 10:27 PM CDTDense Fog AdvisoryTSABenton, Carroll, Madison, Washington5 hr
Oct 15, 4:35 AM CDTSpecial Weather StatementTSABenton, Crawford, Washington55 min
Oct 15, 5:21 AM CDTSpecial Weather StatementTSACrawford, Franklin, Madison39 min
Oct 15, 6:02 AM CDTSpecial Weather StatementTSACarroll28 min
Oct 15, 7:51 AM CDTAreal Flood AdvisoryTSACrawford, Sebastian2 hr

Nearby

Tornado Warnings in Arkansas, 2021Every tornado warning in 2021Tornadoes in 2021

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.