Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 57, NWS Springfield, MO

July 18, 2002Howell County, Missouri

NWS Springfield, MO issued this flash flood warning at Jul 18, 2002, 10:33 AM CDT for Howell County, Missouri. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 18, 2002, 10:33 AM CDT (15:33 UTC)
Expired: Jul 18, 2002, 1:30 PM CDT
In force: 3 hr
Issued by: NWS Springfield, MO
Area: Counties, with a storm outline in the text

County Howell County, MO

The radar

The Springfield radar (KSGF), 149 km from the middle of the area, began a volume at 15:36 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 3.6 hours before the alert went out and 175 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: 2076 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 601 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KSGF 181533
FFWSGF
MOC091-181830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1032 AM CDT THU JUL 18 2002

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL AND SOUTHERN HOWELL COUNTY IN MISSOURI

* UNTIL 130 PM CDT

* AT 1025 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED   THUNDERSTORMS WITH VERY HEAVY RAINFALL FROM POMONA AND 
  WEST PLAINS SOUTH TO LANTON. DOPPLER RADAR ESTIMATED RAINFALL      
  RATES OF 1 TO 1.25 INCHES PER HOUR IN THESE AREAS. TOTAL RAINFALL  
  SINCE 7 AM IN THE WARNING AREA EXCEEDS 3 INCHES IN SOUTHERN HOWELL 
  COUNTY ALONG HIGHWAY 142 FROM THE MOODY TO LANTON. AN ADDITONAL    
  HALF INCH TO ONE INCH OF RAIN WILL BE POSSIBLE BEFORE THE RAIN     
  TAPERS OFF BY 1130 AM.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO   
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING                
  INCLUDE...AREAS NEAR AND SOUTH OF WEST PLAINS...AREAS ALONG        
  HIGHWAY 142 FROM MOODY TO LANTON. 

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.

LAT...LON 3687 9168 3650 9168 3650 9213 3688 9209

DSA

1 follow-up statement

693 
RWUS32 KSGF 181654
FFSSGF
MOC091-181830-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1148 AM CDT THU JUL 18 2002

...FLASH FLOOD WARNING CONTINUES UNTIL 130 PM CDT FOR...

AT 1150 AM...NATIONAL WEATHER SERVICE RADAR INDICATED A WEAKENING 
AREA OF THUNDERSTORMS OVER THE WARNING AREA. RADAR RAINFALL RATES 
ARE GENERALLY DECREASING...BUT THEY HAVE REMAINED HIGH IN THE POMONA 
AREA SINCE 1100 AM WHERE RAINFALL RATES HAVE BEEN 1.5 INCHES PER 
HOUR. TOTAL RADAR ESTIMATED RAINFALL SINCE 7 AM HAS RANGED FROM 2 TO 
3.5 INCHES IN THE WEST PLAINS...LANTON...AND MOODY AREAS. 

LAW ENFORCEMENT OFFICIALS REPORT WIDESPREAD STREET FLOODING IN WEST 
PLAINS AS OF 1130 AM.

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.

LAT...LON 3691 9168 3651 9169 3651 9211 3692 9210

DSA

The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 12:00 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Lawrence	60 min
Jul 18, 1:19 PM CDT	Flash Flood Warning	SGF	Howell	4 hr
Jul 18, 1:25 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, Polk, St. Clair	65 min
Jul 18, 1:49 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas	41 min
Jul 18, 1:54 PM CDT	Severe Thunderstorm Warning	SGF	Hickory, Polk	36 min
Jul 18, 2:21 PM CDT	Severe Thunderstorm Warning	SGF	Ozark, Taney	39 min
Jul 18, 2:26 PM CDT	Severe Thunderstorm Warning	SGF	Barry	49 min
Jul 18, 2:59 PM CDT	Severe Thunderstorm Warning	SGF	Ozark, Taney	61 min
Jul 18, 3:31 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Laclede	59 min
Jul 18, 3:56 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	34 min
Jul 18, 4:07 PM CDT	Severe Thunderstorm Warning	SGF	Maries	38 min
Jul 18, 4:40 PM CDT	Flash Flood Warning	SGF	Maries, Phelps	6 hr
Jul 18, 4:46 PM CDT	Flash Flood Warning	SGF	McDonald	6 hr
Jul 18, 5:08 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	52 min
Jul 18, 6:28 PM CDT	Severe Thunderstorm Warning	SGF	Morgan	47 min
Jul 18, 6:31 PM CDT	Flash Flood Warning	SGF	Morgan	6 hr

Nearby

Flash Flood Warnings in Missouri, 2002 Every flash flood warning in 2002

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; radar from the NEXRAD Level II archive.