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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Greensboro, NC (GSO), 00Z. Its levels are in the table below.
Observed Sounding at Greensboro, NC (GSO), for (3 h 59 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (56)
Greensboro, NC (GSO): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
978 mb270 m26.217.2210° 6 kt
965 mb389 m25.617.6—
941 mb610 m23.816.4225° 18 kt
925 mb761 m22.615.6235° 22 kt
909 mb914 m21.315.0240° 22 kt
877 mb1219 m18.713.8240° 20 kt
850 mb1490 m16.412.7250° 15 kt
817 mb1829 m13.710.9265° 12 kt
788 mb2134 m11.39.3290° 15 kt
759 mb2438 m9.66.9285° 19 kt
732 mb2743 m8.13.5285° 19 kt
705 mb3048 m6.6-0.3265° 25 kt
700 mb3111 m6.6-3.4260° 24 kt
685 mb3289 m7.0-16.0—
655 mb3658 m4.8-12.5240° 35 kt
631 mb3962 m2.6-13.0230° 38 kt
611 mb4216 m0.8-14.2—
600 mb4361 m0.4-19.6—
584 mb4572 m-1.0-20.3230° 41 kt
562 mb4877 m-3.0-23.3225° 42 kt
546 mb5110 m-3.1-32.1—
536 mb5255 m-3.7-30.7—
520 mb5486 m-4.8-34.9225° 45 kt
501 mb5791 m-7.0-34.2225° 47 kt
500 mb5800 m-7.1-34.1225° 47 kt
481 mb6096 m-9.2-32.7225° 47 kt
469 mb6297 m-10.7-31.7—
445 mb6706 m-13.0-26.5230° 49 kt
418 mb7178 m-15.7-20.5—
402 mb7473 m-17.9-23.9—
400 mb7510 m-18.1-24.1235° 63 kt
389 mb7717 m-19.7-24.7—
378 mb7925 m-21.0-26.8235° 60 kt
363 mb8230 m-23.3-28.1235° 66 kt
348 mb8534 m-25.3-31.2235° 63 kt
333 mb8839 m-27.5-33.8240° 63 kt
323 mb9068 m-29.5-34.5—
306 mb9449 m-31.7-42.4235° 64 kt
300 mb9590 m-32.7-44.7235° 62 kt
289 mb9851 m-34.9-42.9—
274 mb10218 m-38.1-45.1—
264 mb10472 m-39.9-47.9—
250 mb10840 m-42.1-53.1230° 70 kt
235 mb11258 m-44.7-55.7—
224 mb11582 m-46.1-61.0230° 70 kt
214 mb11887 m-47.4-66.0230° 74 kt
200 mb12330 m-49.3-73.3220° 68 kt
186 mb12802 m-52.8-75.5215° 73 kt
169 mb13411 m-57.5-77.7220° 68 kt
153 mb14021 m-61.9-79.5225° 71 kt
150 mb14160 m-62.9-79.9220° 68 kt
139 mb14630 m-65.1-81.1215° 66 kt
126 mb15240 m-67.6-82.3230° 60 kt
114 mb15820 m-68.1-81.1—
103 mb16425 m-71.1-85.1—
100 mb16600 m-71.7-85.7240° 31 kt

SPC observed soundings checked · Data: NOAA/SPC

The briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.