Alert archive / Arkansas / Tornado Warnings in 2019

Tornado Warning 7, NWS Tulsa, OK

April 30, 2019Madison County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 30, 2019, 1:27 PM CDT for Madison County, Arkansas. It was in force for 20 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
Apr 30, 2019, 1:27 PM CDT (18:27 UTC)
Expired
Apr 30, 2019, 1:47 PM CDT
In force
20 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Madison County, AR

The radar

The Western Arkansas radar (KSRX), 103 km from the middle of the area, began a volume at 18:29 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 30, 12:02 PM CDTTornado WatchSPC13 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.5 hours before the alert went out and 114 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 12:00Z on 2019-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1237 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 12:00Z on 2019-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.19395878Sfc1 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
1237 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted.

749 
WFUS54 KTSA 301827
TORTSA
ARC087-301915-
/O.NEW.KTSA.TO.W.0007.190430T1827Z-190430T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
127 PM CDT Tue Apr 30 2019

The National Weather Service in Tulsa has issued a

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

* Until 215 PM CDT.
    
* At 127 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 3 miles south of Pettigrew, moving northeast at 30 mph.

  HAZARD...Tornado and quarter 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...
  Pettigrew...                      Boston...
  Weathers...                       Red Star...

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 3596 9347 3595 9347 3595 9349 3593 9349
      3592 9351 3588 9351 3588 9352 3583 9353
      3582 9352 3577 9352 3576 9354 3577 9371
      3604 9350 3599 9345 3597 9345
TIME...MOT...LOC 1827Z 216DEG 26KT 3577 9363 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$
2 follow-up statements
132 
WWUS54 KTSA 301840
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
140 PM CDT Tue Apr 30 2019

ARC087-301915-
/O.CON.KTSA.TO.W.0007.000000T0000Z-190430T1915Z/
Madison AR-
140 PM CDT Tue Apr 30 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
SOUTHEASTERN MADISON COUNTY...
    
At 140 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Boston, moving northeast at 30 mph.

HAZARD...Tornado and quarter 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...
Boston...                         Red Star...
Weathers...                       

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 3596 9347 3595 9347 3595 9349 3593 9349
      3592 9351 3588 9351 3588 9352 3583 9353
      3580 9356 3584 9362 3604 9350 3599 9345
      3597 9345
TIME...MOT...LOC 1840Z 216DEG 26KT 3585 9356 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$
485 
WWUS54 KTSA 301847
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
147 PM CDT Tue Apr 30 2019

ARC087-301857-
/O.CAN.KTSA.TO.W.0007.000000T0000Z-190430T1915Z/
Madison AR-
147 PM CDT Tue Apr 30 2019

...THE TORNADO WARNING FOR SOUTHEASTERN MADISON COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore the warning has
been cancelled.  However small hail and gusty winds are still
possible with this thunderstorm.

A Tornado Watch remains in effect until 1100 PM CDT for northwestern
Arkansas.

LAT...LON 3596 9347 3595 9347 3595 9349 3593 9349
      3592 9351 3588 9351 3588 9352 3583 9353
      3580 9356 3584 9362 3604 9350 3599 9345
      3597 9345
TIME...MOT...LOC 1845Z 216DEG 26KT 3590 9352 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 9:34 AM CDTRiver Flood AdvisoryTSACrawford, Franklin18 hr
Apr 30, 1:08 PM CDTTornado WarningTSAMadison30 min
Apr 30, 3:11 PM CDTTornado WarningTSAWashington49 min
Apr 30, 3:51 PM CDTTornado WarningTSABenton39 min
Apr 30, 3:58 PM CDTTornado WarningTSABenton, Washington47 min
Apr 30, 4:07 PM CDTTornado WarningTSACarroll26 min
Apr 30, 4:25 PM CDTAreal Flood AdvisoryTSABenton, Washington3 hr
Apr 30, 4:40 PM CDTTornado WarningTSABenton, Carroll50 min
Apr 30, 5:18 PM CDTSpecial Weather StatementTSACrawford27 min
Apr 30, 5:36 PM CDTTornado WarningTSABenton, Washington39 min
Apr 30, 6:05 PM CDTSevere Thunderstorm WarningTSABenton28 min
Apr 30, 6:19 PM CDTSpecial Weather StatementTSAWashington26 min
Apr 30, 6:47 PM CDTSpecial Weather StatementTSAMadison43 min

Nearby

Tornado Warnings in Arkansas, 2019Every tornado warning in 2019Tornadoes in 2019

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.