Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 15, NWS Springfield, MO
NWS Springfield, MO issued this tornado warning at Apr 19, 2011, 7:37 PM CDT for Howell County, Ozark County, Missouri. It was in force for 23 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 19, 2011, 7:37 PM CDT (00:37 UTC)
- Expired
- Apr 19, 2011, 8:00 PM CDT
- In force
- 23 min
- Issued by
- NWS Springfield, MO
- Area
- Storm-based polygon
Counties Howell County, MO, Ozark County, MO
The radar
The Springfield radar (KSGF), 137 km from the middle of the area, began a volume at 00:37 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 19, 7:58 PM CDT | HAIL 1.5 | West Plains, MO | RELAYED BY MEDIA. |
| Apr 19, 8:01 PM CDT | HAIL 1 | West Plains, MO | ONE INCH HAIL OBSERVED DOWNTOWN WEST PLAINS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 19, 1:00 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.6 hours before the alert went out and 160 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 803 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.9
The text
As transmitted, in the capitals the NWS used until 2016.
146 WFUS53 KSGF 200037 TORSGF MOC091-153-200100- /O.NEW.KSGF.TO.W.0015.110420T0037Z-110420T0100Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SPRINGFIELD MO 737 PM CDT TUE APR 19 2011 THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A * TORNADO WARNING FOR... CENTRAL HOWELL COUNTY IN SOUTH CENTRAL MISSOURI... EAST CENTRAL OZARK COUNTY IN SOUTHWEST MISSOURI... * UNTIL 800 PM CDT. * AT 733 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR TECUMSEH...OR 26 MILES WEST OF WEST PLAINS...MOVING EAST AT 45 MPH. * LOCATIONS IMPACTED INCLUDE CAULFIELD...POTTERSVILLE...SOUTH FORK... TECUMSEH...UDALL AND WEST PLAINS. IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE...AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3684 9181 3653 9182 3653 9231 3665 9237 TIME...MOT...LOC 0037Z 248DEG 51KT 3661 9222 HAIL 1.75IN $$ HATCH
2 follow-up statements
720 WWUS53 KSGF 200048 SVSSGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 748 PM CDT TUE APR 19 2011 MOC153-200058- /O.CAN.KSGF.TO.W.0015.000000T0000Z-110420T0100Z/ OZARK MO- 748 PM CDT TUE APR 19 2011 ...THE TORNADO WARNING FOR EAST CENTRAL OZARK COUNTY IS CANCELLED... A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHERN MISSOURI. && LAT...LON 3658 9211 3673 9211 3684 9181 3660 9182 TIME...MOT...LOC 0048Z 248DEG 51KT 3666 9204 $$ MOC091-200100- /O.CON.KSGF.TO.W.0015.000000T0000Z-110420T0100Z/ HOWELL MO- 748 PM CDT TUE APR 19 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR CENTRAL HOWELL COUNTY... AT 746 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO 3 MILES NORTHEAST OF CAULFIELD...OR 13 MILES SOUTHWEST OF WEST PLAINS...MOVING EAST AT 60 MPH. LOCATIONS IMPACTED INCLUDE CAULFIELD...POTTERSVILLE...SOUTH FORK AND WEST PLAINS. IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE...AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHERN MISSOURI. && LAT...LON 3658 9211 3673 9211 3684 9181 3660 9182 TIME...MOT...LOC 0048Z 248DEG 51KT 3666 9204 HAIL 1.75IN $$ HATCH
844 WWUS53 KSGF 200057 SVSSGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 757 PM CDT TUE APR 19 2011 MOC091-200107- /O.EXP.KSGF.TO.W.0015.000000T0000Z-110420T0100Z/ HOWELL MO- 757 PM CDT TUE APR 19 2011 ...THE TORNADO WARNING FOR CENTRAL HOWELL COUNTY WILL EXPIRE AT 800 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE STORM THAT PROMPTED THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHERN MISSOURI. LAT...LON 3658 9211 3673 9211 3684 9181 3660 9182 TIME...MOT...LOC 0057Z 248DEG 51KT 3671 9189 $$ HATCH
The office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 7:13 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Oregon, Ozark, Shannon | 62 min |
| Apr 19, 8:02 PM CDT | Severe Thunderstorm Warning | SGF | Howell, Oregon, Shannon | 43 min |
| Apr 19, 8:11 PM CDT | Severe Thunderstorm Warning | SGF | Howell, Ozark | 31 min |
| Apr 19, 8:38 PM CDT | Severe Thunderstorm Warning | SGF | Howell, Oregon, Shannon | 37 min |
Nearby
Tornado Warnings in Missouri, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.