Alert archive / Mississippi / Tornado Warnings in 1991
Tornado Warning 12, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Apr 19, 1991, 3:15 PM CDT for Humphreys County, Mississippi. It was in force for 45 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 19, 1991, 3:15 PM CDT (20:15 UTC)
- Expired
- Apr 19, 1991, 4:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Humphreys County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 19, 3:32 PM CDT | Hail 1.25 | Humphreys, MS | |
| Apr 19, 3:55 PM CDT | Thunderstorm Wind 0 | Humphreys, MS |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 8.3 hours before the alert went out and 99 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
- 49 J/kg
- Mixed-layer CIN
- -222 J/kg
- Mixed-layer LCL
- 923 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this tornado 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 19, 12:22 PM CDT, 2 hours 53 minutes before
MSZALL-191330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1220 PM CST FRI APR 19 1991 A COLD FRONT HAS ENTERED NORTHWEST MISSISSIPPI EARLY THIS AFTERNOON. THUNDERSTORMS WERE BEGINNING TO DEVELOP VERY RAPIDLY ALONG THE COLD FRONT. AT 1215 THE STRONGER STORMS WERE FROM OXFORD TO CLEVELAND MISSISSIPPI AND WERE MOVING TO THE EAST AT 25 MPH. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALL ALONG THE COLD FRONT THIS AFTERNOON AND INTO TONIGHT AS THE FRONT TRACKS TO THE SOUTHEAST. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND PRODUCE STRONG GUSTY SURFACE WINDS...HAIL...AND POSSIBLE FLASH FLOODING OF LOW LYING AREAS. FLOODING ESPECIALLY IN YAZOO AND MADISON COUNTIES DURING THE PASSAGE OF THE HEAVIER RAINS. PERSONS IN CENTRAL MISSISSIPPI NEED TO BE WEATHER ALERT AND TAKE PROPER ACTION WHEN THREATENING WEATHER APPROACHES. LISTEN TO NOAA WEATHER RADIO OR THE LOCAL NEWS MEDIA FOR ANY FURTHER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Apr 19, 12:23 PM CDT, 2 hours 52 minutes before
MSZALL-191330- SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE JACKSON MS 1220 PM CST FRI APR 19 1991 A COLD FRONT HAS ENTERED NORTHWEST MISSISSIPPI EARLY THIS AFTERNOON. THUNDERSTORMS WERE BEGINNING TO DEVELOP VERY RAPIDLY ALONG THE COLD FRONT. AT 1215 THE STRONGER STORMS WERE FROM OXFORD TO CLEVELAND MISSISSIPPI AND WERE MOVING TO THE EAST AT 25 MPH. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALL ALONG THE COLD FRONT THIS AFTERNOON AND INTO TONIGHT AS THE FRONT TRACKS TO THE SOUTHEAST. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND PRODUCE STRONG GUSTY SURFACE WINDS...HAIL...AND POSSIBLE FLASH FLOODING OF LOW LYING AREAS.
Special weather statement, Apr 19, 2:44 PM CDT, 31 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013- ALZ004-008-013-016-192040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 245 PM CDT FRI APR 19 1991 ...SEVERE THUNDERSTORMS WATCH NO. 161 REMAINS IN EFFECT FOR MUCH OF NORTHERN AND CENTRAL MISSISSIPPI UNTIL 700 PM... AT 230 PM CDT...TWO LINES OF STRONG THUNDERSTORMS WERE OCCURRING IN MISSISSIPPI. THE STRONGEST THUNDERSTORMS WERE LOCATED FROM LAKE PROVIDENCE LOUISIANA TO INDIANOLA TO GREENWOOD. SEVERAL STORMS IN THIS LINE HAVE REACHED SEVERE LIMITS AND ARE CAPABLE OF PRODUCING DAMAGING HAIL...HEAVY RAIN AND STRONG WINDS. THESE STORMS HAD DEVELOPED ALONG A VERY SLOW MOVING COLD FRONT AND WERE MOVING TO THE SOUTHEAST AT ABOUT 20 MPH. A SECOND LINE OF STRONG THUNDERSTORMS WAS INDICATED FROM BROOKHAVEN AND MONTICELLO SOUTHWARD TO VERNADA LOUISIANA. THESE STORMS WERE MOVING TO THE EAST AT 20 MPH. PEOPLE IN THESE AREAS SHOULD BE PREPARED TO TAKE CO]VER SHOULD DANGEROUS WEATHER APPROACH AND STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL RADIO OR TELEVISION FOR UPDATES.
Special weather statement, Apr 19, 3:09 PM CDT, 6 minutes before
MSZ009-192115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 308 PM CDT FRI APR 19 1991 ...SEVERE THUNDERSTORM WATCH NUMBER 161 REMAINS IN EFFECT FOR A LARGE PART OF NORTH AND CENTRAL MISSISSIPPI UNTIL 7 PM CDT... AT 256 PM CDT RADAR INDICATED ONE 30 MILE WIDE AREA OF INTENSE THUNDERSTORMS EXTENDING FROM PONTOTOC TO HOLLY BLUFF MISSISSIPPI. ANOTHER 30 MILE WIDE AREA OF INTENSE THUNDERSTORMS WAS INDICATED FROM GEORGETOWN TO PICAYUNE MISSISSIPPI. THE STRONGEST THUNDERSTORMS WERE INDICATED SOUTH OF WATER VALLEY MISSISSIPPI AND NEAR PICAYUNE MISSISSIPPI. BOTH AREAS WERE MOVING SOUTHEAST AT 25 MPH. AT THE PRESENT TIME NO THUNDERSTORM ACTIVITY WAS OBSERVED IN EAST CENTRAL MISSISSIPPI AND EXTREME WEST CENTRAL ALABAMA. PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN ALERT FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 7:48 PM CDT | Severe Thunderstorm Warning | JAN | Wilkinson | 42 min |
| Apr 19, 4:12 AM CDT | Severe Thunderstorm Warning | JAN | Yazoo | 48 min |
| Apr 19, 6:15 AM CDT | Severe Thunderstorm Warning | JAN | Neshoba | 60 min |
| Apr 19, 6:48 AM CDT | Severe Thunderstorm Warning | JAN | Smith | 42 min |
| Apr 19, 7:06 AM CDT | Severe Thunderstorm Warning | JAN | Newton | 69 min |
| Apr 19, 1:11 PM CDT | Severe Thunderstorm Warning | JAN | Leflore | 34 min |
| Apr 19, 1:24 PM CDT | Tornado Warning | JAN | Leflore | 36 min |
| Apr 19, 1:31 PM CDT | Severe Thunderstorm Warning | JAN | Warren | 44 min |
| Apr 19, 1:42 PM CDT | Severe Thunderstorm Warning | JAN | Marion, Walthall | 33 min |
| Apr 19, 1:56 PM CDT | Severe Thunderstorm Warning | JAN | Leflore, Sunflower | 49 min |
| Apr 19, 2:01 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence | 44 min |
| Apr 19, 2:16 PM CDT | Severe Thunderstorm Warning | JAN | Marion | 29 min |
| Apr 19, 2:34 PM CDT | Tornado Warning | JAN | Sunflower, Washington | 26 min |
| Apr 19, 2:59 PM CDT | Tornado Warning | JAN | Washington | 46 min |
| Apr 19, 3:02 PM CDT | Tornado Warning | JAN | Carroll | 43 min |
| Apr 19, 3:49 PM CDT | Severe Thunderstorm Warning | JAN | Humphreys, Yazoo | 41 min |
| Apr 19, 4:04 PM CDT | Severe Thunderstorm Warning | JAN | Copiah, Hinds | 26 min |
| Apr 19, 4:21 PM CDT | Severe Thunderstorm Warning | JAN | Rankin, Simpson | 39 min |
| Apr 19, 4:30 PM CDT | Severe Thunderstorm Warning | JAN | Copiah, Hinds | 30 min |
| Apr 19, 4:33 PM CDT | Severe Thunderstorm Warning | JAN | Holmes | 27 min |
| Apr 19, 4:38 PM CDT | Severe Thunderstorm Warning | JAN | Yazoo | 37 min |
| Apr 19, 4:51 PM CDT | Tornado Warning | JAN | Holmes | 38 min |
| Apr 19, 4:51 PM CDT | Tornado Warning | JAN | Madison | 54 min |
| Apr 19, 4:54 PM CDT | Severe Thunderstorm Warning | JAN | Lincoln | 35 min |
| Apr 19, 5:47 PM CDT | Tornado Warning | JAN | Leake | 28 min |
| Apr 19, 5:49 PM CDT | Tornado Warning | JAN | Scott | 41 min |
| Apr 19, 5:58 PM CDT | Severe Thunderstorm Warning | JAN | Newton | 62 min |
| Apr 19, 6:14 PM CDT | Severe Thunderstorm Warning | JAN | Lincoln | 31 min |
| Apr 19, 6:22 PM CDT | Severe Thunderstorm Warning | JAN | Lauderdale | 68 min |
| Apr 19, 6:23 PM CDT | Severe Thunderstorm Warning | JAN | Claiborne | 52 min |
| Apr 19, 6:41 PM CDT | Severe Thunderstorm Warning | JAN | Pike, Walthall | 49 min |
Nearby
Tornado Warnings in Mississippi, 1991Every tornado warning in 1991Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.