Alert archive / Tennessee / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 23, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Apr 28, 2000, 6:55 PM EDT for Knox County, Sevier County, Tennessee. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 28, 2000, 6:55 PM EDT (22:55 UTC)
- Expired
- Apr 28, 2000, 7:30 PM EDT
- In force
- 35 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
Counties Knox County, TN, Sevier County, TN
The radar
The Knoxville radar (KMRX), 43 km from the middle of the area, began a volume at 22:56 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
Nashville Metro, TN (KBNA), launched 12:00Z, 10.9 hours before the alert went out and 259 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 572 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- -20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KMRX 282256 SVRMRX TNC093-155-282330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MORRISTOWN TN 655 PM EDT FRI APR 28 2000 THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... KNOX COUNTY IN EASTERN TENNESSEE SEVIER COUNTY IN EASTERN TENNESSEE * UNTIL 730 PM EDT * AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR KIMBERLIN HEIGHTS...OR 9 MILES NORTHWEST OF SEVIERVILLE...MOVING SOUTH AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... KIMBERLIN HEIGHTS AROUND 700 PM EDT MCMAHAN AROUND 705 PM EDT 6 MILES WEST OF SEVIERVILLE AROUND 715 PM EDT 7 MILES WEST OF PIGEON FORGE AROUND 730 PM EDT THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING... HAIL UP TO 1 INCH IN DIAMETER...OR THE SIZE OF QUARTERS. SEEK A STURDY SHELTER IMMEDIATELY! STAY AWAY FROM WINDOWS. $$ X GH
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.
NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 28, 2:41 PM EDT, 4 hours 14 minutes earlier.
Area forecast discussion, Apr 28, 2:41 PM EDT, 4 hours 14 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 241 PM EDT FRI APR 28 2000 SURFACE LOW NOW OVER THE NC/SC BORDER WILL MOVE QUICKLY NORTHEAST OFF THE NC COAST TONIGHT. EXPECT CLOUDS TO CLEAR OUT IN SOUTHERN VALLEY INTO THE CENTRAL VALLEY. CLOUDS WILL LINGER IN WRAPAROUND MOISTURE OVER NORTHEAST TN/SOUTHWEST VA OVERNIGHT. A FEW LIGHT INSTABILITY SHOWERS OVER NORTHEAST TN/SOUTHWEST VA WILL DIE OUT QUICKLY THIS EVENING WITH LOSS OF AFTERNOON HEATING. SHORTWAVE DIVING SOUTHEAST THROUGH THE LONGWAVE TROF SATURDAY WILL PASS THROUGH THE FA DURING THE DAY. LINGERING MOISTURE BEST OVER NORTHEAST TN/SOUTHWEST VA...RATHER POOR ELSEWHERE. 18Z MODEL SOUNDING AT TRI SHOWS CAPE OF 736 J/KG. IN ADDITION...THETA-E RIDGE POKES UP THROUGH THIS AREA...18Z LI VALUES AROUND -1 AND SHOWALTER AROUND 0. RATHER STEEP LAPSE RATE WITH WET-BULB ZERO AROUND 6900 FEET. EQUILIBRIUM LEVEL ONLY 25K FEET SO ANY STORMS WILL BE LOW-TOPPED. WOULD NOT BE SURPRISED TO SEE SMALL HAIL WITH ANY STORM THAT POPS UP. LOW-LEVEL MOISTURE CONVERGENCE AND LIFT ARE RATHER WEAK SO WILL ONLY GO WITH 20 PERCENT POPS FOR NOW. DRY FOR THE REMAINDER OF THE FA. SKIES WILL CLEAR OUT QUICKLY THROUGHOUT THE ENTIRE FA SATURDAY NIGHT AS SHORTWAVE RACES OUT OF THE REGION AND RIDGE SURFACE/ALOFT BUILDS DOWN IN FROM THE GREAT LAKES. SUNDAY SHOULD BE A BEAUTIFUL DAY WITH SUNNY SKIES AND WARMER TEMPS WITH RIDGE IN FIRM CONTROL. FWC/FAN TEMPS IN CLOSE AGREEMENT AND WENT WITH A BLEND. EXTENDED DISCUSSION BY RBP... ALL THE MODELS INDICATE A 50H SHORTWAVE DIVING THROUGH THE CENTRAL APPALACHIANS MONDAY NIGHT AND TUESDAY. ASSOCIATED WITH THIS FEATURE WILL BE A WEAK COLD FRONT. THERE WILL BE JUST ENOUGH LIFT...MOISTURE AND INSTABILITY TO GET A FEW SHOWERS AND THUNDERSTORMS WITH IT. ALL THE EXTENDED MODELS SHOW A CUT OFF 50H LOW ACROSS THE SW U.S. ON MONDAY. THEN THE MODELS DIFFER ON HOW IT LIFTS OUT ON TUESDAY AND WEDNESDAY. THE UK IS THE MOST PROGRESSIVE MOVING IT INTO THE SE U.S BY WEDNESDAY...BUT IT REMAINS CUT OFF FROM THE MAIN FLOW AND THEREFORE IS PROBABLY MOVING TOO FAST. THE EUROPEAN LIFTS IT QUICKLY NORTHEAST INTO THE FLOW. THE MRF IS MORE OF A COMPROMISE WHICH WILL KEEP IT DRY ON WEDNESDAY. CHA 47 75 45 81 / 0 0 0 0 TYS 45 71 44 78 / 0 0 0 0 TRI 43 66 42 74 / 0 20 0 0 OQT 45 71 44 78 / 0 0 0 0 .MRX... NC...NONE. TN...NONE. VA...NONE. AUSTIN
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 4:49 PM EDT | Severe Thunderstorm Warning | MRX | Jefferson | 26 min |
| Apr 28, 5:13 PM EDT | Severe Thunderstorm Warning | MRX | Jefferson, Sevier | 47 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2000Every severe thunderstorm warning in 2000
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.