Alert archive / Missouri / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 21, NWS Springfield, MO
NWS Springfield, MO issued this severe thunderstorm warning at Apr 17, 1991, 4:42 PM CDT for McDonald County, Missouri. It was in force for 33 min.
The area
The counties it named.
The facts
- Issued
- Apr 17, 1991, 4:42 PM CDT (21:42 UTC)
- Expired
- Apr 17, 1991, 5:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Springfield, MO
- Area
- Whole counties
County McDonald County, MO
The nearest sounding before it
Springfield, MO (KUMN), launched 12:00Z, 9.7 hours before the alert went out and 57 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
- 1743 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 777 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSGF 172142 RRA
SVRSGF
MOC119-172215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
442 PM CDT WED APR 17 1991
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTHWEST PART OF MISSOURI
MCDONALD
AT 440 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM NEAR
STOTTS CITY...OR ABOUT 30 MILES SOUTHWEST OF SPRINGFIED.
LARGE HAIL IS POSSIBLE WITH THIS STORM...AS IT MOVES TO THE
NORTHEAST AT AROUND 10 MILES AN HOUR.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.
SIMKULETWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 17, 3:05 PM CDT, 1 hour 37 minutes before
MOZ015-016-019-020-021-172130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 305 PM CDT WED APR 17 1991 AT 305 PM...AN ISOLATED...VERY STRONG THUNDERSTORM HAS DEVELOPED ABOUT 45 MILES SOUTHWEST OF SPRINGFIELD OR NEAR SHELL KNOB. THIS STORM WILL LIKELY MOVE NORTHEAST AT 15 TO 20 MPH...ACROSS TABLE ROCK LAKE. VERY HEAVY RAIN...SMALL HAIL...AND STRONG GUSTY SURFACE WINDS CAN BE EXPECTED WITH THE PASSAGE OF THIS STORM. BOATERS ON TABLE ROCK LAKE SHOULD MOVE TO SAVE COVER ON SHORE UNTIL AFTER THE PASSAGE OF THIS STORM. JOHNSON
Special weather statement, Apr 17, 4:15 PM CDT, 27 minutes before
MOZ015-016-019-020-021-172230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 415 PM CDT WED APR 17 1991 AT 415 PM...RADAR INDICATED A VERY STRONG THUNDERSTORM ABOUT 50 MILES SOUTHWEST OF SPRINGFIELD OR JUST TO SOUTH OF CASSVILLE. THIS STORM WAS MOVING SLOWLY NORTHEAST. VERY HEAVY RAIN...SMALL HAIL AND STRONG GUSTY SURFACE WINDS CAN BE EXPECTED WITH THE PASSAGE OF THIS STORM. IF THREATENING WEATHER APPROACHES YOU...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOU HOME OR BUSINESS. JOHNSON
The office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 5:59 PM CDT | Severe Thunderstorm Warning | SGF | Cedar, Vernon | 31 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1991Every severe thunderstorm warning in 1991
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.