Alert archive / Mississippi / Flash Flood Warnings in 1987
Flash Flood Warning 4, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Mar 17, 1987, 8:43 PM CST for Yazoo County, Mississippi. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Mar 17, 1987, 8:43 PM CST (02:43 UTC)
- Expired
- Mar 17, 1987, 10:45 PM CST
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Yazoo County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 2.7 hours before the alert went out and 59 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
- 83 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 622 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 554 m²/s²
- 0-3 km storm-relative helicity
- 785 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KJAN 180243 RRA
FFWJAN
MSC163-180445-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
843 PM CST TUE MAR 17 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1045 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY...
IN CENTRAL MISSISSIPPI
...YAZOO
THE HEAVY RAINFALL IN YAZOO CITY WILL CONTINUE FOR ANOTHER HOUR OR
TWO AS ANOTHER LINE OF STRONG THUNDERSTORMS MOVES THROUGH THE AREA.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.What forecasters said that day
The local office's own words before this flash flood 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, Mar 17, 3:07 PM CST, 5 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 305 PM CST TUE MAR 17 1987 ...TORNADO WATCH NUMBER 33 IS STILL IN EFFECT UNTIL 4PM FOR SOUTHWEST MISSISSIPPPI... STRONG THUNDERSTORM CONTINUE TO MOVE NORTHEAST UP THE MISSISSIPPI RIVER. THE STRONGEST THUNDERSTORM WAS LOCATED IN EXTREME SOUTHWEST WARREN COUNTY AT 3 PM. IT WILL BE MOVING NEAR VICKSBURG BETWEEN 330 AND 400 PM THIS AFTERNOON. BRIEF HEAVY RAIN...STRONG GUSTY WfINDS...AND SMALL HAIL IS LIKELY WITH THIS THUNDERSTORM. PEOPLE IN SOUTHWEST MISSISSIPPI SHOULD CONTINUE TO MONITOR THE WEATHER THIS AFTERNOON AS THIS STORM SYSTEM MOVES THROUGH.
Special weather statement, Mar 17, 4:00 PM CST, 4 hours 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
405 PM CST TUE MAR 17 1987
...TORNADO WATCH NUMBER 34 IS STILL IN EFFECT UNTIL 10 PM FOR CENTRAL
AND SOUTH MISSISSIPPI...
AT 405 PM...RAIN AND THUNDERSTORMS COVERED MOST OF THE WESTERN HALF
OF MISSISSIPPI. THE STRONGEST STORMS WERE OVER MADISON...ADAMS..
JEFFERSON AND CLAIBORNE COUNTIES.
ALTHOUGH THESE STORMS DO NOT APPEAR TO BE SEVERE AT THE PRESENT TIME...
THEY COULD INTENSIFY RAPIDLY AT ANY TIME. HEAVY RAINFALL...GUSTY WIND
AND SMALL HAIL IS LIKELY WITH THE HEAVIER STORMS AS THEY MOVE NORTHEAST
AT 50 MILES PER HOUR.
PERSONS IN CENTRAL AND SOUTH MISSISSIPPI SHOULD CONTINUE TO MONITOR THE
LAT%EST WEATHER STATEMENTS IN THIS RAPIDLY-CHANGING SITUATION...AND BE
PREPARED TO TAKE QUICK PROTECTIVE ACTION IF A WARNING IS ISSUED OR THE
WEATHER BECOMES THREATENING.Special weather statement, Mar 17, 4:09 PM CST, 4 hours 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 410 PM CST TUE MAR 17 1987 TORNADO WATCH NUMBER 34 CONTINUES TO BE IN EFFECT FOR MOST OF EAST CENTRAL MISSISSIPPI UNTIL 1000 PM CST. AT 400 PM CST RADAR SHOWED A 6 MILE WIDE AREA OF THUNDERSTORMS THAT EXTENDED FROM JUST WEST OF UNION TO NEAR NEWTON. THIS AREA OF STORMS WAS MOVING NORTH AT 35 MPH. RESIDENTS IN NEWTON AND NESHOBA COUNTIES OF EAST CENTRAL MISSISSIPPI ARE UR+GED TO REMAIN WEATHER ALERT FOR THE NEXT 45 TO 60 MINUTES AS THESE STORMS PASS THROUGH THE AREA.
Special weather statement, Mar 17, 6:34 PM CST, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 635 PM CST TUE MAR 17 1987 TORNADO WATCH NUMBER 34 CONTINUES TO BE IN EFFECT FOR MOST OF EAST CENTRAL MISSISSIPPI UNTIL 1000 PM CST. AT 630 PM CST RADAR SHOWED WIDELY SCATTERED THUNDERSTORMS MOVING INTO WESTERN NESHOBA AND WINSTON COUNTIES. THEY WERE MOVING NORTHEAST AT 35 MPH. RESIDENTS IN WINSTON AND NESHOBA COUNTIES OF EAST CENTRAL MISSISSIPPI CAN EXPECT GUSTY WINDS...LIGHTNING...AND PERIODS OF HEAVY RAIN AS THESE STORMS MOVE THROUGH THE TWO COUNTY AREA.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 7:27 PM CST | Severe Thunderstorm Warning | JAN | Lincoln | 33 min |
| Mar 17, 7:47 PM CST | Severe Thunderstorm Warning | JAN | Walthall | 18 min |
| Mar 17, 7:48 PM CST | Severe Thunderstorm Warning | JAN | Copiah | 27 min |
| Mar 17, 8:25 PM CST | Severe Thunderstorm Warning | JAN | Walthall | 35 min |
| Mar 17, 9:09 PM CST | Flash Flood Warning | JAN | Holmes, Humphreys, Leflore | 3 hr |
| Mar 17, 9:09 PM CST | Flash Flood Warning | JAN | Hinds | 3 hr |
| Mar 17, 10:15 PM CST | Severe Thunderstorm Warning | JAN | Jasper, Jones | 30 min |
Nearby
Flash Flood Warnings in Mississippi, 1987Every flash flood warning in 1987
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.