Alert archive / Mississippi / Flash Flood Warnings in 2001

Flash Flood Warning 44, NWS Jackson, MS

June 12, 2001Forrest County, Lamar County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jun 12, 2001, 11:04 PM CDT for Forrest County, Lamar County, Mississippi. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 12, 2001, 11:04 PM CDT (04:04 UTC)
Expired: Jun 13, 2001, 1:00 AM CDT
In force: 116 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Forrest County, MS, Lamar County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.1 hours before the alert went out and 123 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2492 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KJAN 130406
FFWJAN
MSC035-073-130600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1104 PM CDT TUE JUN 12 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FORREST COUNTY IN SOUTHEAST MISSISSIPPI
  LAMAR COUNTY IN SOUTHEAST MISSISSIPPI

* UNTIL 100 AM CDT

* AT 1104 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM 6 MILES SOUTHWEST     
  OF SUMRALL TO 6 MILES EAST OF PETAL. THE THUNDERSTORMS WERE NEARLY 
  STATIONARY.

RADAR ESTIMATED RAINFALL AMOUNTS OF...TWO TO THREE INCHES HAD FALLEN 
SINCE 10 PM. ADDITIONAL AMOUNTS OF ONE TO TWO INCHES IS POSSIBLE BY 
MIDNIGHT.

VERY HEAVY RAIN FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

LAT...LON 3143 8964 3119 8964 3120 8916 3143 8917

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.

NWS Jackson, MS wrote its last area forecast discussion before this flash flood warning went out at Jun 12, 2:00 PM CDT, 9 hours 4 minutes earlier.

Area forecast discussion, Jun 12, 2:00 PM CDT, 9 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
200 PM CDT TUE JUN 12 2001

WEAK HIGH PRESSURE/MID LEVEL SUBSIDENCE IN THE WAKE OF DEPARTING
ALLISON REMNANTS SHOULD CONTROL LOCAL WEATHER FOR ANOTHER DAY OR SO.
A GRADUAL RETURN OF BETTER TROPICAL MOISTURE WILL BEGIN WEDNESDAY
WITH SOME POTENTIAL FOR DIURNAL TSRA...MAINLY W AND S. MODELS NOT
TOO IMPRESSED WITH INSTABILITY AS YET WITH CAPES OF 2000-2500J/KG
DRIVEN NWD WITH A SEA BREEZE LATE IN WEDNESDAY AFTERNOON. BY
THURSDAY...THE VALUES APPROACH 3000-3500J/KG IN WRN PORTIONS WITH K
INDEXES EXCEEDING 30 ONCE AGAIN. A MORE ACTIVE SEA BREEZE SHOULD BE
THE DETERMINING FACTOR FOR THURSDAY.

ADDED SUNSHINE WILL BRING SLIGHTLY WARMER DAYTIME TEMPS BUT
GENERALLY NEAR CLIMATOLOGY FOR MID JUNE. MOS NUMBERS VERY CLOSE AND
WILL NOT STRAY EXCEPT TO LEAN TOWARD NGM POPS.

IN THE EXTENDED...FRONTAL BOUNDARY STILL FORECAST TO APPROACH THE
MISSISSIPPI RIVER LATE FRIDAY AND CROSS MUCH OF THE CWFA FRIDAY
NIGHT.  A SQUALL LINE COULD BE THE MAIN FEATURE OF THIS FRONT AS IT
CONTINUES SWD ON SATURDAY UNDER NWLY FLOW ALOFT. EXACT TIMING OF THE
DETAILS WILL HAVE TO FINE-TUNED LATER. THEN...MEDIUM RANGE ENSEMBLE
DATA ALL SUPPORTING A MAJOR SUMMER MID-UPPER ANTICYCLONE PARKING OUT
IN THE SRN PLAINS SUNDAY THROUGH TUESDAY. THIS FEATURE WILL DOMINATE
FIRST PART OF NEXT WEEK AND SETTLE ANY DYING FRONTAL BOUNDARY INTO
THE COASTAL WATERS.

PRELIM NUMBERS
JAN 71/91/71/90/72 01-21
MEI 69/91/69/91/70 01-21

.JAN...
MS...NONE.
LA...NONE.
AR...NONE.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 13, 12:55 AM CDT	Flash Flood Warning	JAN	Forrest, Lamar	2 hr
Jun 13, 1:15 AM CDT	Flash Flood Warning	JAN	Jefferson Davis	2 hr
Jun 13, 3:14 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	31 min
Jun 13, 3:39 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	36 min
Jun 13, 3:48 PM CDT	Severe Thunderstorm Warning	JAN	Covington	27 min
Jun 13, 4:23 PM CDT	Tornado Warning	JAN	Forrest, Jones	37 min
Jun 13, 5:04 PM CDT	Severe Thunderstorm Warning	JAN	Warren	41 min
Jun 13, 5:11 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	34 min

Nearby

Flash Flood Warnings in Mississippi, 2001 Every flash flood warning in 2001

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.