Alert archive / Tennessee / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 30, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Mar 22, 1991, 10:45 PM CST for Bledsoe County, Tennessee. It was in force for 45 min. 1 report 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
- Mar 22, 1991, 10:45 PM CST (04:45 UTC)
- Expired
- Mar 22, 1991, 11:30 PM CST
- In force
- 45 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Bledsoe County, TN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 22, 11:05 PM CST | Hail 0.75 | Bledsoe, TN |
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
Nashville Metro, TN (KBNA), launched 00:00Z, 4.8 hours before the alert went out and 139 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
- 581 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 394 m²/s²
- 0-3 km storm-relative helicity
- 582 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 6.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 230446 SVRCHA TNC007-230530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 1145 PM EST (1045 PM CST) FRI MAR 22 1991 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230 AM EST (1130 PM CST) FOR PEOPLE IN THE FOLLOWING LOCATIONS IN SOUTHEAST TENNESSEE ...BLEDSOE COUNTY GOLF BALL SIZE HAIL AND WINDS OF AT LEAST 50 MPH HAVE BEEN REPORTED AND SOME TREES WERE BLOWN DOWN AS THE STORM PASSED THROUGH GRUNDY COUNTY. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
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 22, 9:36 PM CST, 1 hour 9 minutes before
GAZALL-230600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 1035 PM EST FRI MAR 22 1991 ...TORNADO WATCH FOR EXTREME NORTHWEST GEORGIA UNTIL 3 AM EST... A TORNADO WATCH CONTINUES IN EFFECT FOR EXTREME NORTHWEST GEORGIA. THE WATCH AREA INCLUDES ROME...DALTON...CHATSWORTH...TRENTON AND SURROUNDING AREAS. AT 1030 PM EST RADAR SHOWED A BAND OF THUNDERSTORMS ACROSS TENNESSEE AND NORTHERN ALABAMA FROM NEAR CROSSVILLE TO NEAR HUNTSVILLE. THESE STORMS ARE EXPECTED TO MOVE EAST INTO THE NORTHWEST CORNER OF GEORGIA AROUND MIDNIGHT OR SHORTLY THEREAFTER. AS THE BAND OF THUNDERSTORMS ADVANCED ACROSS WESTERN TENNESSEE... NORTHERN MISSISSIPPI AND NORTHWEST ALABAMA EARLIER THIS EVENING THERE WERE REPORTS OF HAIL...HIGHS WINDS...AND EVEN TORNADOES. < PEOPLE IN NORTHWEST GEORGIA ARE URGED TO BE PREPARED TO MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES OR IF A WARNING IS ISSUED. STAY ABREAST OF LATEST DEVELOPMENTS BY LISTENING TO REPORTS FROM NEWS MEDIA OR LISTENING TO NOAA WEATHER RADIO.
Special weather statement, Mar 22, 10:38 PM CST, 7 minutes before
GAZALL-230700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ATLANTA GA 1140 PM EST FRI MAR 22 1991 ...TORNADO WATCH FOR EXTREME NORTHWEST GEORGIA UNTIL 3 AM EST... A TORNADO WATCH CONTINUES IN EFFECT FOR EXTREME NORTHWEST GEORGIA. THE WATCH AREA INCLUDES ROME...DALTON...CHATSWORTH...TRENTON AND SURROUNDING AREAS. AT 1135 PM EST RADAR SHOWED A BAND OF THUNDERSTORMS ACROSS TENNESSEE AND NORTHERN ALABAMA FROM NEAR CROSSVILLE TO NEAR HUNTSVILLE. SOME OF THESE STORMS MAY MOVE INTO THE NORTHWEST CORNER OF OF GEORGIA BETWEEN MIDNIGHT AND 3 AM EST. THERE HAS BEEN A SLIGHT DECREASE IN THE STRENGTH OF THE STORMS OVER THE PAST HOUR. HOWEVER...SOME MAY STILL BE CAPABLE OF PRODUCING HAIL...HIGHS WINDS...AND EVEN TORNADOES. < PEOPLE IN NORTHWEST GEORGIA ARE URGED TO BE PREPARED TO MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES OR IF A WARNING IS ISSUED. STAY ABREAST OF LATEST DEVELOPMENTS BY LISTENING TO REPORTS FROM NEWS MEDIA OR LISTENING TO NOAA WEATHER RADIO.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 10:20 PM CST | Severe Thunderstorm Warning | FFC | Grundy | 40 min |
| Mar 22, 11:12 PM CST | Severe Thunderstorm Warning | FFC | Rhea | 48 min |
| Mar 23, 3:26 AM CST | Severe Thunderstorm Warning | FFC | Hamilton | 34 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1991Every severe thunderstorm warning 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.