Alert archive / Tennessee / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 39, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Mar 23, 1993, 4:26 PM EST for Hamilton County, Tennessee. It was in force for 49 min.
The area
The counties it named.
The facts
- Issued
- Mar 23, 1993, 4:26 PM EST (21:26 UTC)
- Expired
- Mar 23, 1993, 5:15 PM EST
- In force
- 49 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Hamilton County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 9.4 hours before the alert went out and 167 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
- 100 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 543 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 112 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 KCHA 232131 SVRCHA TNC065-232225- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TN 426 PM EST TUE MAR 23 1993 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM EST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST TENNESSEE ...HAMILTON COUNTY AT 425 PM EST NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM IN EXTREME SOUTHEAST MARION COUNTY OF SOUTHEAST TENNESSEE OR NEAR NICKAJACK DAM. THE THUNDERSTORM WAS MOVING TOWARD THE NORTHEAST AT AROUND 30 MPH AND WILL LIKELY MOVE INTO EXTREME SOUTHWEST HAMILTON COUNTY SHORTLY AND MOVING THROUGH CHATTANOOGA SHORTLY THEREAFTER. PERSONS IN THE PATH OF THIS THUNDERSTORM SHOULD REMAIN AWARE OF THE POSSIBILITY FOR LARGE HAIL...STRONG GUSTY WINDS...VERY HEAVY RAINFALL... AND DANGEROUS LIGHTNING. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND 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 ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
What 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, Mar 23, 2:57 PM EST, 1 hour 29 minutes before
GAZ008-011-232100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBUS GA 256 PM EST TUE MAR 23 1993 STRONG THUNDERSTORMS CONTINUE OVER SOUTHWEST GEORGIA. AT 254 COLUMBUS WEATHER RADAR INDICATED AN AREA OF RAIN WITH EMBEDDED THUNDERSTORMS LOCATED FROM NEAR LEESBURG TO JUST EAST OF EDISON. THE STRONGEST ACTIVITY WAS OVER SOUTHERN TERRELL COUNTY. MOVEMENT OF THE STORMS WAS TOWARD THE NORTHEAST AT 20 MPH. THESE THUNDERSTORMS MAY PRODUCE HEAVY RAIN...STRONG WINDS... DANGEROUS LIGHTNING AND SMALL HAIL. DUE TO PREVIOUS RAINFALL THE GROUND IS SATURATED. FLOODING OF LOW LYING AREAS IS POSSIBLE WITH ANY ADDITIONAL RAINFALL. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Mar 23, 3:15 PM EST, 1 hour 11 minutes before
GAZ006-008-009-232200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 315 PM EST TUE MAR 23 1993 ...THUNDERSTORMS CONTINUING OVER PARTS OF CENTRAL GEORGIA... AT 310 PM NATIONAL WEATHER SERVICE RADAR IN MACON SHOWED THUNDERSTORMS SCATTERED THROUGHOUT MUCH OF CENTRAL GEORGIA. STORMS WITH THE HEAVIEST RAIN WERE NEAR WARNER ROBINS AND GRAY...AND NEAR REBECCA. MOVEMENT WAS NORTHEAST AT 25 MPH. THESE STORMS WILL PRODUCE STRONG GUSTY WINDS...FREQUENT LIGHTNING... AND BRIEF BUT VERY HEAVY RAIN. SMALL HAIL IS ALSO LIKLEY.
Special weather statement, Mar 23, 3:17 PM EST, 1 hour 9 minutes before
GAZ002-004-130945- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 315 PM EST TUE MAR 23 1993 AT 310 PM EST...VERY STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTH- WEST GEORGIA. NATIONAL WEATHER SERVICES RADARS AT ATHENS AND ATLANTA BOTH INDICATED HEAVY RAINFALL AND POSSIBLY SMALL HAIL IN THESE THUNDER- STORMS. THE STRONGEST STORMS WERE LOCATED OVER PICKENS...GILMER...AND CHEROKEE COUNTIES. THESE STORMS WERE MOVING NORTHEAST AT NEAR 35 MILES AN HOUR. CONDITIONS OVER GEORGIA ARE FAVORABLE THIS AFTERNOON FOR SEVERE WEATHER DEVELOPMENT...ALTHOUGH NO SEVERE WEATHER HAS OCCURRED AT PRESENT. RESIDENTS OVER NORTHEWEST GEORGIA SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIO"NS AND SHOULD BE PREPARED TO EXERCISE SEVERE WEATHER SAFETY RULES. LISTEN TO COMMERCIAL RADIO...TELEVISION...OR NOAA WEATHER RADIO FOR LATER INFORMATION ON THIS SITUATION.
Special weather statement, Mar 23, 3:20 PM EST, 1 hour 6 minutes before
GAZ001>004-232230- SPECIAL WEATHER STATEMENT... CORRECTION TO GENERIC CODE NATIONAL WEATHER SERVICE ATLANTA GA 315 PM EST TUE MAR 23 1993 AT 310 PM EST...VERY STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTH- WEST GEORGIA. NATIONAL WEATHER SERVICES RADARS AT ATHENS AND ATLANTA BOTH INDICATED HEAVY RAINFALL AND POSSIBLY SMALL HAIL IN THESE THUNDER- STORMS. THE STRONGEST STORMS WERE LOCATED OVER PICKENS...GILMER...AND CHEROKEE COUNTIES. THESE STORMS WERE MOVING NORTHEAST AT NEAR 35 MILES AN HOUR. CONDITIONS OVER GEORGIA ARE FAVORABLE THIS AFTERNOON FOR SEVERE WEATHER DEVELOPMENT...ALTHOUGH NO SEVERE WEATHER HAS OCCURRED AT PRESENT. RESIDENTS OVER NORTHEWEST GEORGIA SHOULD BE ALERT FOR $RAPIDLY CHANGING WEATHER CONDITIONS AND SHOULD BE PREPARED TO EXERCISE SEVERE WEATHER SAFETY RULES. LISTEN TO COMMERCIAL RADIO...TELEVISION...OR NOAA WEATHER RADIO FOR LATER INFORMATION ON THIS SITUATION.
Special weather statement, Mar 23, 3:27 PM EST, 59 minutes before
GAZ002-004-232230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATHENS GA 326 PM EST TUE MAR 23 1993 ...THUNDERSTORMS HAVE DEVELOPED OVER NORTHEAST GEORGIA... AT 320 PM EST RADAR INDICATED A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTH GEORGIA EXTENDING FROM WEST OF DAHLONEGA TO LAKE ALATOONA. THE LINE WAS MOVING TOWARDS THE SOUTHEAST AT 15 MILES AN HOUR...HOWEVER INDIVIDUAL STORMS IN THE LINE WERE MOVING TOWARDS THE NORTHEAST AT 35 MILES AN HOUR. PERSONS IN LUMPKIN...DAWSON...WHITE AND HALL COUNTIES OF NORTHEAST GEORGIA SHOULD BE PREPARED FOR APPROACHING THUNDERSTORMS DURING THE NEXT COUPLE OF HOURS. PERSONS ACROSS NORTHEAST GEORGIA SHOULD BE ON THE LOOKOUT FOR JAPPROACHING THUNDERSTORMS AND BE PREPARED TO TAKE SAFETY PRECAUTIONS IF THE NEED ARISES.
Special weather statement, Mar 23, 4:21 PM EST, 5 minutes before
GAZ006-008-009-232300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MACON GA 420 PM EST TUE MAR 23 1993 ...THUNDERSTORMS CONTINUING OVER PARTS OF CENTRAL GEORGIA... AT 415 PM NATIONAL WEATHER SERVICE RADAR IN MACON SHOWED THUNDERSTORMS SCATTERED THROUGHOUT MUCH OF CENTRAL GEORGIA. STORMS WITH THE HEAVIEST RAIN WERE NEAR FORSYTH AND MILLEDGEVILLE. ALSO THUNDERSTORMS WERE NOTED FROM FITZGERALD IN BEN-HILL COUNTY NORTH TO NEAR EASTMAN IN DODGE COUNTY. MOVEMENT WAS NORTHEAST AT 25 MPH. GUSTY WINDS..SMALL HAIL..AND BREIF HEAVY RAIN WILL ACCOMPANY THESE STORMS AS THEY MOVE ACROSS THE AREA THIS AFTERNOON AND EVENING. SOME OF THE LARGER STORMS WILL PRODUCE FREQUENT LIGHTNING. PERSONS IN OR NEAR THESE THUNDERSTORMS SHOULD MOVE INDOORS UNTIL THEY PASS OUT OF YOUR AREA. REMEMBER LIGHTNING IS AN UNDER-RATED KILLER.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 10:37 AM EST | Flash Flood Warning | FFC | Marion | 3 hr |
| Mar 23, 10:52 AM EST | Flash Flood Warning | FFC | Rhea | 2 hr |
| Mar 23, 12:12 PM EST | Flash Flood Warning | FFC | Hamilton | 3 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1993Every severe thunderstorm warning in 1993
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.